Database Users

[Q] Android and WP7 Dual Boot

With the recent developments of Android and WP7 for the HD2, I really can't decide between the two. Will there be an option of dual boot like with WM6.5? I'd love to have this option.

I would definitely love for this to happen, although WP7 is in the lead for me now, booting android once in a while wont be so bad.

i think itz possible in tmobile usa HD2 with itz 1gb ROM ... two partitions using two NAND OS... dual NAND..

I'm very interested in this option. Hopefully this will be available soon.

I hoppe we find a solution for Leo from EU (512Mo).
Like WIN6.5 + Android on SD ?
My favorite way : Android in NAND, WP7 on SD !!

think we should be able to still boot android off sd with magldr... we just need to switch to a different sd card that wasn't used with wp7. I hope its possible. will be trying it soon.

i would love to do this, i have a 124 leo.

F*ck the 512!
Android+WP7 would be sweeeet for 1024!

http://www.darkforcesteam.com.cn/thread-25910-1-1.html

James_Caliber said:
http://www.darkforcesteam.com.cn/thread-25910-1-1.html
Click to expand...
Click to collapse
im still running an old build of sd, so is it possible to upgrade radio, magldr, win7 nand and keep android on sd?
im not really wanting to give up android just yet, but i do admit i want to see what win7 is like

James_Caliber said:
http://www.darkforcesteam.com.cn/thread-25910-1-1.html
Click to expand...
Click to collapse
based by the link above (with google translate), its possible to dual boot with wp7 nand and android sd

Is it possible to back up a android nand rom, so i don't need to download al apps again and set them all up again?

stephandelaat said:
Is it possible to back up a android nand rom, so i don't need to download al apps again and set them all up again?
Click to expand...
Click to collapse
SEARCH!!!
But since your lazy, yes there is. Its called Titanium backup and it saves all your apps and settings into a file. When you install a new build just recover that file from within Titanium backup and all your apps and stuff will be there.

James_Caliber said:
http://www.darkforcesteam.com.cn/thread-25910-1-1.html
Click to expand...
Click to collapse
So...does anyone here speak enough Chinese to make more sense of this than Google Translate does? I think some sort of modification needs to be made to init.rc. Possibly system.img too. It's also not clear to me if a NAND or SD ROM is meant to be used. There are some links which I'm trying to make sense of...

Dark Fire said:
So...does anyone here speak enough Chinese to make more sense of this than Google Translate does? I think some sort of modification needs to be made to init.rc. Possibly system.img too. It's also not clear to me if a NAND or SD ROM is meant to be used. There are some links which I'm trying to make sense of...
Click to expand...
Click to collapse
Im unsure on how to do this also, if anybody fancys typing it into something we could follow it would be great!
Im in work today and my phone is fully charged ready for win7/android combo

How would you boot android from nand if you can't access the file system of the SD card?
Its an unknown format and magldr surely won't be able to boot anything from it.
Maybe it works the other way round, though?
Or you could use your phone7 without sd card...
hey that may even work.
Limited storage for phone7 - who cares?

domenukk said:
Or you could use your phone7 without sd card...
hey that may even work.
Limited storage for phone7 - who cares?
Click to expand...
Click to collapse
That's what I would like to be able to do. WP7 is nice to play with at this stage but I still plan to use Android most of the time.

Ali_Shaikh said:
SEARCH!!!
But since your lazy, yes there is. Its called Titanium backup and it saves all your apps and settings into a file. When you install a new build just recover that file from within Titanium backup and all your apps and stuff will be there.
Click to expand...
Click to collapse
Thanks alot, i wasn't able to find it. Google couldn't help me.
Sent from my HTC HD2 using XDA App

domenukk said:
How would you boot android from nand if you can't access the file system of the SD card?
Its an unknown format and magldr surely won't be able to boot anything from it.
Maybe it works the other way round, though?
Or you could use your phone7 without sd card...
hey that may even work.
Limited storage for phone7 - who cares?
Click to expand...
Click to collapse
Half of the sdcard is formatted in FAT32. The other in WP7 system file.

James_Caliber said:
http://www.darkforcesteam.com.cn/thread-25910-1-1.html
Click to expand...
Click to collapse
Here's that thread translated:
1-14
I have already declared in the title dual boot, or have friends do not understand the altar. After the following modifications, select the boot wph start guide wp7, select the boot ad sd sd boot on Android , Android WP7 and dual-boot, the boot options can, without disturbing each other. Start wp7 will not interfere with sd card, wp7 sd card did not even know exist, the question is wp7 little space available, but at least can be used.
Expect experts to address the first time in wp7 can choose to start the occupation of the sd card space, do not fully occupied enough.
-------------------------------------------------- -------------------------------------------------- -------------------------------------------------- ---------------
Thank DFT ! Because SD Android running well, I have not brush Nand Android, waiting for the arrival of WP7.
Today, DFT has released long-awaited HD2 users WP7, I finally started to brush. Brush some of the altar before the access to the Friends of the experience, that really exclusive WP7 SD card, which can later how to run Android.
I have access to the information carefully and found that the SD card as WP7 only system expansion space, the first start of the SD card partition to use. Therefore, I decided to removed the SD card so reserved for Android use.
PC: Windows 7
HD2: SHPL 2.08
SD: Sandisk 8G c4 (from the phone in the show)
The following is the process of Brush:
1. Three-color screen brush Magldr 112 (all normal, NES Set )
2.Magldr start to select the USB Flasher, PC-side DWI (all normal)
3. Phone reboots directly into the WP7, simple to use, after all the normal (free space 98M)
4. Handset off
5. Insert SD card
6. boot holding down the hold button, enter the Magldr menu
7. Set always shows the menu (to decide, because I want to dual-boot often, so set the boot menu)
8. Set the boot path SD card Android
9. Guide the SD Android, the show finished HTC interface (kernel, Init after) boot into Andoird animation between the phone restart
Episode: I stupid out, SD card, there are a lot of information not backed up, hands and no card reader, can not enter the Andoird, the backup can not, WP7, when not installed into the SD card, do not expect him to. Fortunately, there are menu items that Magldr USB storage (my first use of Magldr), select this option, the memory card sorting.Remove the SD card all the Android-generated directory (the directory is generated Android, do not also delete a Android), re-boot, the first screen to enter Andoird die.
10. Online access to information, Magldr guide SD card Android, need to modify inti.rc.
11. Will system.img (I use the DHD Android) copied to the Linux modified.
In the service ril-daemon / system / bin / rild-l / system / lib / libhtc_ril_wrapper.so append --d / dev/smd0 nand parameters, to support
Nand boot.
12. Returns Android phone, after a successful boot.
Nagging: WP7 egg really hurt, WIFI without any settings, I have been using a static IP, can not be set.
Click to expand...
Click to collapse
He's dual booting, but none of the SD card space is for WP7. It only has around 100megs left. WP7 automatically RAID0's the whole card with internal memory for space. That's why removing the card screws up WP7 and a hard reset has to be done. I think what would be ideal is if the card could be split into 8gb for WP7 and 8GB for Android, but part of the problem is you can't call HARET.exe or CLRCAD.exe because there is no OS to understand those executables.

things have moved on a lot..a little help please

Hi,
last time i came in here unhappy with my stock HD2 on tmobUK android was just emerging on SD, now i came in here the other day WP7 is available as NAND and so is android....things seem to be a little confusing now, quite a few of these great ROMS are from people whos first language is not english so its quite hard to sometimes understand what they are explaining so i would be greatful if someone could answer somes questions, i have tried to read threads as best i can but some of them, well most actually are well into the hundreds within hours.
1) A lot of chefs describe NAND and SD, i know the difference between the two, but then they get mixed with magldr and NAND with ext4 etc etc..basically i want to flash the phones software to my NAND, i am assuming this is the best way to have it running at its optimum ?..so if i do this why would i need ext4 partions on the SD as well ? whats the benefit of it ?
2) i have also noticed that you can scan a barcode and have a link download a new rom to your phone and flash it, could i do this with ANY rom straight over the top of another without question ? and everything will be as it should be.
3) Does each ROM need to be set up in a different way?, this partly answers the previous question.
4) i flashed WP7 to my NAND (i think)..i was not happy with it and i had magldr installed, i just formatted my SD card to fat32 popped it back in and followed instructions to put [Feb 01][DL DesireZ v3.4][DL Data2SD/Ext4 v2.6][Nand/SD/MAGLAR] on to it.... it took me into magldr and told me to do a few things...did this flash to my NAND ? and did it do what was needed to the SD card regarding format or was it up to me to make certain changes to the SD card myself ?..the phone works and i can make calls, but all the apps that are stated to be in the ROM are not there, i cant find any GPS stuff and when i go to market place itsays its downloading an app but i can never see it.
As you can see i really am quite discombobulated with all this...i would love a easy reading guide that explains everything from A-B and all the terminolgy.
Thanks.

1. Many of these Android roms would swamp the entire memory of the EU HD2, so a workaround is to have partitions on the sd cards to store apps and data, leaving the system to run on NAND. When you update your rom, you just flash the system files and all app and data remains on the sd card.
2. The QR code just allows you to download the rom to your phone. You would still need to flash it AFAIK. (Heven't tried one of those yet). There are basically 2 types of NAND Android roms. One type use the more conventional flash type where you run an exe (daf.exe) from the usb flasher option on magldr. The 2nd (more recent type) packs the roms as zips which you can download and copy to your sd card and then using Clockwork mod, you can flash the rom directly from your sd card. This also allows you to take full backups, try another rom and if you don't like it you merely restore the rom.
3.Each rom and each dev has their own way of building these roms, so you will need to read carefully regarding what to do wrt sd card partitions etc.
4. Flashing WP7 and the Android rom via magldr would have installed the rom to NAND. You would need to partition your sd card yourself prior to flashing the rom. There are tutorials on how to partition the sd card to give you more help.

loady said:
Hi,
last time i came in here unhappy with my stock HD2 on tmobUK android was just emerging on SD, now i came in here the other day WP7 is available as NAND and so is android....things seem to be a little confusing now, quite a few of these great ROMS are from people whos first language is not english so its quite hard to sometimes understand what they are explaining so i would be greatful if someone could answer somes questions, i have tried to read threads as best i can but some of them, well most actually are well into the hundreds within hours.
1) A lot of chefs describe NAND and SD, i know the difference between the two, but then they get mixed with magldr and NAND with ext4 etc etc..basically i want to flash the phones software to my NAND, i am assuming this is the best way to have it running at its optimum ?..so if i do this why would i need ext4 partions on the SD as well ? whats the benefit of it ?
2) i have also noticed that you can scan a barcode and have a link download a new rom to your phone and flash it, could i do this with ANY rom straight over the top of another without question ? and everything will be as it should be.
3) Does each ROM need to be set up in a different way?, this partly answers the previous question.
4) i flashed WP7 to my NAND (i think)..i was not happy with it and i had magldr installed, i just formatted my SD card to fat32 popped it back in and followed instructions to put [Feb 01][DL DesireZ v3.4][DL Data2SD/Ext4 v2.6][Nand/SD/MAGLAR] on to it.... it took me into magldr and told me to do a few things...did this flash to my NAND ? and did it do what was needed to the SD card regarding format or was it up to me to make certain changes to the SD card myself ?..the phone works and i can make calls, but all the apps that are stated to be in the ROM are not there, i cant find any GPS stuff and when i go to market place itsays its downloading an app but i can never see it.
As you can see i really am quite discombobulated with all this...i would love a easy reading guide that explains everything from A-B and all the terminolgy.
Thanks.
Click to expand...
Click to collapse
1) MAGLDR is nothing but kind of a bootloader. You can select how you want to start your ROM. AD SD or NAND or also now you can back up ROMS with MAGLDR... SD ROMS use haret.exe method. NAND uses DFT.exe method. there is another way called Clockwork MOD which uses .zip method.
Differences:-
SD Method: you have winmo 6.5 on NAND and android on SD card.
NAND Method: you install android on NAND itself.
Clockwork MOD: you install android on NAND but the benefits include you can backup your whole ROM in the actual state and flash it back later... So you can try different ROMs without worrying about installing apps and adjusting settings on the ones you like.
ext4 is a type of partition used by system. you can use the ROM which supports APP2SD and put your apps on ext4 partition.
2) As for the barcode ones. I am not sure how that works, but deffinately not as easy as you are thinking...
3) All the NAND roms use DAF.exe method so you do not need to worry about setting up the ROMs or anything. It does it for you. But some NAND roms have capabilities for APP2SD, in that case you might have to format your SD card in some particular way (explained in the threads always) to get ext2/3/4 partition to use app2sd.
4) you can flash WP7 only on NAND as there is no other way to do it for now. As for the new build you used, it has more than 1 versions. SD and NAND. If you followed the instructions for NAND and used DAF.exe to install it, then the ROM is already set up for you on NAND. Now the build you used had data2sd option and you can format your SD card as the author has said to use app2sd functionality.
One more thing, mostly TMO US users do not need app2sd as they have enough space on their phone. So if you are TMO US user, you can opt your self out from that headache.
Hope this helps. Just for the clarification, I am also a newb... I tried my level best to answer your questions...

QR codes are just text, in this case a URL. Instead of making you type the URL on your phone, you can just scan it with a special app, and get taken to the URL. Nothing more.

Thanks guys...the fog is clearing a little now...just a few reiterations..
So if i opt to flash to NAND, is it flashing it to the NAND upon each boot or is it written once and thats it, it seems to take a little while longer to boot these ROMS on NAND than a stock ROM..so for instance, if i was to remove the SD card after shutting down the phone and then start it up again, would it not boot because its looking for the ROM on the SD to put into NAND ?...i understand that running from the SD card it just boots from the SD card.
So basically the last ROM i installed, as i did not pre setup the partitions on SD card, FAT32/1024mb ext4/512mb ext4 and went on to flash the rom it has ONLY flashed the ROM WITHOUT the apps and everything else it was supposed to have pre installed already ?...so i have now setup my SD card and i am going to follow through again from scratch and hopefully have the ROM running with all the said apps.
My SD card being setup FAT32 / 1024 ext4 / 512 ext4 doesnt seem to be a lot of space to store apps on the ext4 partitions, what data goes on what partitions...and do i HAVE to have the ext 4 at the stated sizes ?
Thanks again guys for your input, you have all been really helpful.

loady said:
Thanks guys...the fog is clearing a little now...just a few reiterations..
So if i opt to flash to NAND, is it flashing it to the NAND upon each boot or is it written once and thats it, it seems to take a little while longer to boot these ROMS on NAND than a stock ROM..so for instance, if i was to remove the SD card after shutting down the phone and then start it up again, would it not boot because its looking for the ROM on the SD to put into NAND ?...i understand that running from the SD card it just boots from the SD card.
So basically the last ROM i installed, as i did not pre setup the partitions on SD card, FAT32/1024mb ext4/512mb ext4 and went on to flash the rom it has ONLY flashed the ROM WITHOUT the apps and everything else it was supposed to have pre installed already ?...so i have now setup my SD card and i am going to follow through again from scratch and hopefully have the ROM running with all the said apps.
My SD card being setup FAT32 / 1024 ext4 / 512 ext4 doesnt seem to be a lot of space to store apps on the ext4 partitions, what data goes on what partitions...and do i HAVE to have the ext 4 at the stated sizes ?
Thanks again guys for your input, you have all been really helpful.
Click to expand...
Click to collapse
If you use NAND then you can start your phone without SD card. The build is on NAND(ROM). Where win6.5 used to be originally. You do not HAVE TO partition your card. You can use whole card at FAT32 and store all your data on there. But if you choose, you can give some storage space as ext2/3/4 partition and store your apps in that partition. The benefit is you can free some space from your phone. When you boot your phone for the first time, it will be in original state. Then you can install apps from the market. These apps will be going to your phone's inbuilt memory by default. But you can use some apps to move apps from your phone storage to ext4 partition. But be aware that after you move your apps to SD card you have to have SD card in all times or those apps will not work when SD card is not there. As far as the size of ext4 partition is in question, 1024 MB is more than enough. As you will have some space on your phone and 1024MB on ext4. I would say if you install more apps than that, then you phone will be laggy like hell. ext4 partition size should not matter according to me.
Also read tutorials at this thread. http://forum.xda-developers.com/showthread.php?t=905841

^ Agreed. Don't do Apps2SD if you don't really need it. It's another possible source of problems (I've had my fair share of system crashes with A2SD on my ol' Magic, and the biggest problem was that there was no way of backing stuff up - stuff probably got more reliable nowadays though), it's not ideal for your SD card and speed isn't optimal either.

StephanV said:
^ Agreed. Don't do Apps2SD if you don't really need it. It's another possible source of problems (I've had my fair share of system crashes with A2SD on my ol' Magic, and the biggest problem was that there was no way of backing stuff up - stuff probably got more reliable nowadays though), it's not ideal for your SD card and speed isn't optimal either.
Click to expand...
Click to collapse
People would have you believe otherwise..ext4 is faster but ext2 parsay is more reliable... for the life of me i have followed numerous guides explaining how to format the card, even one i followed from a rom was in perfect enlgish and easy to follow but my phone just locks at the spinning tmobile logo, it wont even boot into magldr...all i can do is reflash a stock rom using RUU...im sure i am doing everything in correct order

Dual Booting Mango and Android Wiped the Android Partition!

Hi,
I'm dual booting Mango and Android in my HD2.
Initially, everything was fine. i can boot into mango or android as i wish. after 1 day exploring mango, i realized that the empty space of the storage card returned to 8GB. FYI, i partitioned the SD card into 2 partitions of 4GB each.
then went into MAGDLR to boot Android...it says loading image fail...my android partition is gone!
anyone facing this issue? i'm thinking maybe mango has something to do with it...
any thoughts?
thx

me too,so i back to NAND android again

remember this is green mango and is buggy!
It probably did a hard software reset and wiped the sd card while you weren't looking.
Hope you backed up android!

You Jinxed me!!!! I read your post this afternoon I said to myself "Pfff...Sucks for U, glad I'm still on NODO!" and then an hour ago while listening to Last.fm my phone crashed and rebooted. I didn't think anything of it because it does this every time once in a while. I stuck it back in my holster while waiting for it to be ready to use again. When I took it back out of my holster and turned it on it had the "getting started menu" was on the first page! Nooooo!!!!!! I got Jinxed!!!!!!!!
Well, I was planning to upgrade to Mango shortly anyways and I have a backup of my android on my desktop, which I just I did 2 days ago, thank god!!! So not too bad though my desktop usb hubs is really wonky and unreliable at times so that will be my only headache. So to answer your question, it's not just a Mango problem. It can happen on Nodo, too!

is this a mango problem? i've been dual booting ever since wp7 was available and haven't had any mishaps. gotta backup more often, but aren't we always using new versions of android anyways?

radiikal,
How did you get Mango dual booting in the first place. I have not had the time to devote to figuring out how to work with the way Mango formats the SD card, in the past I have been running dual boot on 7004 and NoDo so I know how to do it. However, as of Mango it formats the entire card as two "Other" partitions, since the 200MB section is not FAT16 I have not been able to modify it using the usual steps and I cannot get Windows to recognize the new FAT32 partition since it is not the first partition on the disk. I am going to try and copy a partition from another SD card and see if that works but if there is another way to do it I would like to know.
~Spike~

spikespencer said:
radiikal,
How did you get Mango dual booting in the first place. I have not had the time to devote to figuring out how to work with the way Mango formats the SD card, in the past I have been running dual boot on 7004 and NoDo so I know how to do it. However, as of Mango it formats the entire card as two "Other" partitions, since the 200MB section is not FAT16 I have not been able to modify it using the usual steps and I cannot get Windows to recognize the new FAT32 partition since it is not the first partition on the disk. I am going to try and copy a partition from another SD card and see if that works but if there is another way to do it I would like to know.
~Spike~
Click to expand...
Click to collapse
Guys, the dual booting method is the same for all WP7 builds. I'm using the one user elfinlazz cooked (http://forum.xda-developers.com/showthread.php?t=1157535) and i loaded it the same way as i did when i was using xbmod's build.
spike, you are right in that when WP7 formats your sd card, it doesn't make a FAT16 partition. I use minitool partition manager for the whole process and it makes one 200MB "other" partition, and the rest of the space as a second "other" partition. what you do is this:
1) Delete the bigger "other"(red) partition and click apply. it should be "unallocated" (gray)
2) Click create make it "unformatted"(dark green), leave as logical, and make sure that "partition size" is BIGGER than "unallocated space before" (I would make it AT LEAST a 1gb difference. I've had issues where if you try to make them equal sizes, windows would format the whole card again)
NOTE: make sure the partitions read in THIS EXACT ORDER:
200MB "other" partition
smaller "unallocated" partition
bigger "unformatted" partition
click apply and it may take a while. once it's done, put it in the phone and boot into WP7
3) you should go through the setting up phone process. once you get to the home screen, go to settings, about phone, and check the available storage. it SHOULD be the size of the bigger "unformatted" partition (give or take a couple mb for the os files). if all is well, hit "reset your phone", when it asks are you sure, hit yes, and your phone will reboot. MAKE SURE YOU BOOT INTO MAGLDR.
4) once in magldr, put the sd back in the computer and open minitool
5) you can now delete the 200MB "other" partition and it will merge with the smaller "unallocated" partition. from there, click create, make it FAT32, make it primary, and make the cluster size 32kb. click apply and let it work.
6) you should now have 2 partitions, a FAT32 and an "other" partition. the "other" partition should be bigger. right click on the "other" partition, go to "modify" and click set as primary. both partition should be set as primary or android will not see your SD storage.
7) if that's good, copy your android build to the sd card and before booting into android, i would boot into WP7 again, set up your phone again, and check the available storage. should be the same as the first time you booted wp7. if not, then you'll have to do the process all over again, and i would make the WP7 partition bigger than you did.

I am using dual boot too, no issues here. Works as good as it always has

radiikal said:
Hi,
I'm dual booting Mango and Android in my HD2.
Initially, everything was fine. i can boot into mango or android as i wish. after 1 day exploring mango, i realized that the empty space of the storage card returned to 8GB. FYI, i partitioned the SD card into 2 partitions of 4GB each.
then went into MAGDLR to boot Android...it says loading image fail...my android partition is gone!
anyone facing this issue? i'm thinking maybe mango has something to do with it...
any thoughts?
thx
Click to expand...
Click to collapse
I think you can not dual boot with half and half size. Give WP7 greater space than Android as not to confuse WP7. I read that somewhere.

spikespencer said:
radiikal,
How did you get Mango dual booting in the first place. I have not had the time to devote to figuring out how to work with the way Mango formats the SD card, in the past I have been running dual boot on 7004 and NoDo so I know how to do it. However, as of Mango it formats the entire card as two "Other" partitions, since the 200MB section is not FAT16 I have not been able to modify it using the usual steps and I cannot get Windows to recognize the new FAT32 partition since it is not the first partition on the disk. I am going to try and copy a partition from another SD card and see if that works but if there is another way to do it I would like to know.
~Spike~
Click to expand...
Click to collapse
You can use 2 different separate cards, one for each build. It's a pain to update WP7 and then go over the partitioning mess again.
The only annoyance may be the removing and the reinserting of cards. That does not bother me.
Once WP7 Mango is set up and running, it does not erase a new card you would insert by accident. WP7 asks you to turn off the phone and get the right card. It is best to setup MAGLDR to boot android automatically...

I had that same problem but that was with a 7004 build. It happened a day after I flashed radio 2.15 to 2.12 to test for better battery performance.
Have got radio 2.15 back on and not changing this time

HD2 WP7 and Android Dual Boot File Swap

I apologize if this isn't in the correct forum. I wasn't sure since it's dealing with two dif os's.
Anyways, my question is Can I access files on the android jellybean partition from inside of wp7? I would like to be able to play movies, look at pics in wp7 that are in the android partition.
Also, what about vice versa? One last question. Wp7 seems to run very quickly, but Android seems to run pretty slowly. I assume its because it's running from the SD card. Is there any way that can be sped up to run at normal (fast) speed?
--- edit:
is it possible to put android on the nand, and wp7 on the sd so that the android os would be faster?

So.
Yes, you can access files from FAT partition on WP7. Few file explorers allow you to do that, just have a look at them and check if Storage Card folder works. They also allow you to watch videos, view images and play music, but forget about playlist support, subtitles or anything complicated. We don't have software to do that yet.
Vice versa is not possible since WP7 uses its own file system which Android can't see nor use.
Android will always run slower because it's an unoptimized piece of sh- I mean software. But you can try ROMs which take advantage of EXT4 partitions using NativeSD method - these are noticeable faster, no more waiting for minutes for apps to launch. You can also overclock CPU and use higher read ahead value for SD card (SD Speed Increase from Market).
Putting Android on NAND and WP7 on SD is not yet possible. It might be when Magldr 2.0 will be released (and it won't be really that anyway), but we don't know when.

thank you
thanks for the detailed and thorough explanation. i see that you are also using a dual boot. how slow/fast does your paranoidjellybean operate? i'm going to look into ext 4 and cpu boosts. i guess i will have to reinstall/delete everything in my android partition to do an ext 4? and i guess if i go ext 4 wp7 won't be able to read it? i'm going to look into it. i will update this with whatever info i find.
---- edit
I'm going to try and use the roms you name in your signature area that you are using, and see if it works any better. what sd card are you using? I'm using a micro center micro sd class 6 16gb one. i'm getting a 8000ffff error in this wp7 rom when trying to get something from marketplace, and the droid is too slow. going to try the ext method for the droid. (can't dl apps on droid either!) so i will post what happens here.
---- edit
ok, i'm thoroughly confused by these instructions (somewhat vague in parts ) http://forum.xda-developers.com/showthread.php?t=1869673 Is there a video tutorial where it is shown what to do step by step to get a native sd setup for a dual booth with android sd and wp7? Do I just do it the same way I did before (install wp7, then reset / repartition, but instead of using fat32 i make a fat32 (how big) and an ext4 (or 2?) and which comes first (the fat or the ext) ? Afterwards, ALL partitions are primary?
i found this info for installing ext4. but do i create the ext4 BEFORE or AFTER i install WP7 ?

I'd say Paranoid JB is pretty fast using NativeSD (EXT) method. You will need to create an EXT partition first, but keep a FAT partition, because on EXT the ROM will keep only its own data and apps, the rest is still on FAT (just like now, but instead of data.ext and system.ext in ICS folder there is a partition just for those). Windows Phone 7 will not be able to read content of EXT partition, but it will not be needed, since there won't be anything worth looking at and all media files you will still keep on FAT. You will also have to make a backup of everything on your FAT partition because it will be lost, and fresh install will be necessary. You might want to backup your applications with Titanium Backup though.
For more information on partitioning please visit NativeSD thread.
I'm using a 8GB Transcend Class 4 card with 4GB FAT, 1GB EXT and rest (2.4GB) WP7FS. I don't have any errors with downloading apps on neither WP7 nor Android. Are you sure you entered that special code for Marketplace and logged into Google account on Droid?

furthermore
actually, i installed the hd20 rom you're using and had no problems with marketplace. at this point i have hd20 wp7 set up, activated, and working. i'm just trying to understand some of the more advanced information in the forums about setting up the ext4. i found some very technical instructions (edit: http://forum.xda-developers.com/showthread.php?t=534714 ) for setting up an ext2 with gparted via dos then upgrading it to ext4. i don't know if that will mess up the wp7 partition, and if i should have done this before i installed wp7.
i had already read the nativesd thread, and the extended threads from it. i'm afraid i'm just not knowledgeable enough currently to fill in the gaps of information i find in a lot of the instructions. but i'm not giving up.
---- edit update:
this has gotten way off the original topic so I've started a new thread with a diferent topic here: http://forum.xda-developers.com/showthread.php?p=31356468#post31356468

[Q][HD2][NativeSD] Cannot find external SD in camera app

Hi,
I intended to post this question to the [3.Nov.2012][ROM] NexusHD2-JellyBean-4.1.2-CM10 V1.2 [NativeSD] thread, but not allowed to (http://forum.xda-developers.com/showpost.php?p=32624318)
Can someone help me redirect the question? Thanks!
First thanks for the great ROM, tytung. It looks great and easy to install.
I have a HD2 and wanted to dual boot WP7 and Android. Found this new method NativeSD and decided to try it. But once I installed the ROM (through MAGLDR 1.13 and Recovery 4Ext 2.2.7), everything works fine, except that the camera app (and other apps) says that it cannot find the external SD card to save the pictures. It does not give me options to save on phone. But since both system and data are on external SD, and that partition is treated as /mnt/sdcard0, I am not sure if I am supposed to have an external SD card from the perspective of Android.
Cannot seem to find similar post with this issue, so I must be doing something wrong with partitioning. Could you help??? Thanks so much! I am inches away from having a great Android JellyBean experience on my HD2.
Thanks!!!
-----------------------------------
Details:
4 partitions on my 16GB SD card:
1) FAT32, 3GB (this is the boot partition, where I installed Recovery 4Ext and through it, installed the boot files in /NativeSD)
2) Ext4, 8GB (this is the system/data partition, where installation put all Android files)
3) Ext4, 2GB (this is current empty, reserved for another ROM that requires two partitions)
4) Other, 2GB (this is a WP7 partition)
I formatted these using Mini Partition Tool on Windows (not via Recovery 4Ext)

I think you need to run CHKDSK on your FAT32 partition of the card with fix option, once, using a card reader and computer. Once done, put the card back to your phone and boot to your preferred Native SD rom. Then check whether you applications are able to trace the SD card. Should work, since the same worked for me, when I had a similar issue. Hope that helps.

dheerajk27 said:
I think you need to run CHKDSK on your FAT32 partition of the card with fix option, once, using a card reader and computer. Once done, put the card back to your phone and boot to your preferred Native SD rom. Then check whether you applications are able to trace the SD card. Should work, since the same worked for me, when I had a similar issue. Hope that helps.
Click to expand...
Click to collapse
Hi dheerajk27, thanks for your quick reply. Was wondering
1) should Android JB think that I have an external SD?
2) where will this external SD be mapped to? The Fat32 partition? The same Ext4 partition as system & data?
3) what would chkdsk do? I just want to make sure that it doesn't mess up the Win 7 stuff as well.
Thanks!

Hi braveliquid, welcome to the forum.
Did you set all your partitions as primary using minitool?
1. yes
2. depends photos/music => fat part, apps=>ext part
3. not sure either

Robbie P said:
Hi braveliquid, welcome to the forum.
Did you set all your partitions as primary using minitool?
1. yes
2. depends photos/music => fat part, apps=>ext part
3. not sure either
Click to expand...
Click to collapse
Thanks for your reply. Upon multiple trial and error, I found out that the logical partition is the culprit. When I have 3 primary (FAT32, Ext4, Ext4), Android can recognize the ext SD card. However, when I have 3 primary and 1 logical (the Win Phone 7 partition is made logical by windows), then Android does not recognize the ext SD card anymore.
Any thought on how I can resolve this? Or else I will have to keep 2 SD cards, one for WP7, and one for Android. Doable, but a bit of a hassle.
Thanks!

use minitool and set your wp7 partition as primary too.
Problem solved.
you could use two cards, i am at the moment (I keep spare card in a cellotape pocket on inside of battery cover). You can also dual boot without partitioning see http://forum.xda-developers.com/showpost.php?p=34009754&postcount=1126 but only really as a backup phone in case wp7 goes wrong and you are away from pc.

Robbie P said:
use minitool and set your wp7 partition as primary too.
Problem solved.
you could use two cards, i am at the moment (I keep spare card in a cellotape pocket on inside of battery cover). You can also dual boot without partitioning see http://forum.xda-developers.com/showpost.php?p=34009754&postcount=1126 but only really as a backup phone in case wp7 goes wrong and you are away from pc.
Click to expand...
Click to collapse
Thanks Robbie. Yes, I have set the WP7 partition as primary and then it works! I am liking the Android experience (have been using iPhone).
Btw, in WP7, it is asking me to update software (I have a very old WP7 installation, migrated to dual boot in early 2011 i think). Can I just upgrade WP7 like normal (i.e. by connecting to Zune)? Or will that destroy MAGLDR? If that won't work, how can I upgrade WP7 to 7.5 or later 7.8? I cannot use Windows Market Place apparently with the old WP7 OS.
Thanks again!

braveliquid said:
Thanks Robbie. Yes, I have set the WP7 partition as primary and then it works! I am liking the Android experience (have been using iPhone).
Btw, in WP7, it is asking me to update software (I have a very old WP7 installation, migrated to dual boot in early 2011 i think). Can I just upgrade WP7 like normal (i.e. by connecting to Zune)? Or will that destroy MAGLDR? If that won't work, how can I upgrade WP7 to 7.5 or later 7.8? I cannot use Windows Market Place apparently with the old WP7 OS.
Thanks again!
Click to expand...
Click to collapse
I would just flash one of the new wp7.8 roms, your choice which. Ansar's does not seem to be able to use the new wpbackup app at the moment.
With Hd2o and pdaimatejam you can backup your phone and restore apps sms calls etc. Sooo much better for trying out new roms.

Robbie P said:
I would just flash one of the new wp7.8 roms, your choice which. Ansar's does not seem to be able to use the new wpbackup app at the moment.
With Hd2o and pdaimatejam you can backup your phone and restore apps sms calls etc. Sooo much better for trying out new roms.
Click to expand...
Click to collapse
:good: Will be another weekend "project" =)
Thanks!