Possible use of external SD card for OS? - Galaxy Tab General

I am wondering about creating a ROM build that resides on the external SD card that can be booting into to get access the the calling feature without flashing the native ROM. I have the HTC HD2 with windows mobile 6.5. I have downloaded many Android ROM builds to my external SD card for it and the builds work..though there are glitches. I was thinking that doing this for the Tablet might be a safe alternative until a more permanent fix of the native ROM can be made.
I had a tablet that I had successfully flashed to get calling feature but wiped my IMEI and serial number. So I ended up returning it. Now, I just purchased a new one and thought that using that external SD for the OS would be workable. Novice I am, can't changes be made to the orginal OS as the phone/dialer software is already there? Perhaps just a code some how to unlock it?
And thanks for all the hard work guys!

Related

WP7 Rom Backup

Has anyone been able to backup an activated WP7 Rom. Since the WP7 Rom password which is tied directly to the sd card used when the phone is initially turned on prevents easily swapping stuff around, I like to backup my existing WP7 Rom. Then I can flash a Nandroid Gingerbread Rom and then be able to return flash to my stored activate WP7 Rom/SD card whenever I'd like. Sounds good anyway.
hooutoo said:
Has anyone been able to backup an activated WP7 Rom. Since the WP7 Rom password which is tied directly to the sd card used when the phone is initially turned on prevents easily swapping stuff around, I like to backup my existing WP7 Rom. Then I can flash a Nandroid Gingerbread Rom and then be able to return flash to my stored activate WP7 Rom/SD card whenever I'd like. Sounds good anyway.
Click to expand...
Click to collapse
You mean a program like Nandroid?
And no. That's not possible at the current moment.
That's too bad, what we need is a version of ClockworkMod that works with WP7.
This would be a great tool if someone brought it out.
Have my HD2 now running wp7,activated and not bad at all, loads of apps missing
that I would normally have in my android build.
Wanting to flash back to android but would also like to backup this activated wp7
and then can swap and change as new stuff comes out.
Any mods willing to take this on.
George
maybe by reg'?
hooutoo said:
Has anyone been able to backup an activated WP7 Rom. Since the WP7 Rom password which is tied directly to the sd card used when the phone is initially turned on prevents easily swapping stuff around, I like to backup my existing WP7 Rom. Then I can flash a Nandroid Gingerbread Rom and then be able to return flash to my stored activate WP7 Rom/SD card whenever I'd like. Sounds good anyway.
Click to expand...
Click to collapse
I am positive there could be a way through Regedit.
I carry a 16gb sd and i noticed it showed a little reserved partition of around 20% in the zune software(which allows its tweaking). The tweak ability was gone after reinstalling windows and zune.. and that made me loss the partition and an extra unused 2gb.
Now the main thing is, i reg edited the phone for portable usb capabilities - viewing its content, moving, creating and pasting stuff around. To regain my full gb's, i wud 've copied all contents to pc and formatted it but then realized it contained all call history and EVERY settings made to the phone(on sd) which the reg editing i did didnt give full access to than only the media folders.
Unless ADVANCED reged' is made to make visible all primary phone settings(for easy pc backup) then . . . . . . . . . yeah....'no cant do'
But this is xda. and i hope someone could figure this out

[Q] The new 7720 ROM - Encrypted Card, What to do?

Hi,
I'm trying to keep up with the thread on the development forumm but theres to mach going on there.
Can someone please explain what's that they are saying that the rom is locking the sd card and the tonight there will be another rom?
What all this about? whats the difference between the current rom and the new one?
Thanks
it locks the sd card meaning the sd can no longer be used as a regular sd card and will only work on a windows phone 7 device
yeah, at the moment, you have two choices
use the V1 ROM and be able to upgrade your ROM, you can install android still, you can not upgrade to 7712 / 7720 AND have access to your SD card UNLESS you lock the SD card
the second choice is use V2 ROM, this will lock your SD card from the start and enable updates to be much easier
Locking the SD card means that it can not be used at all on another device, Currently there isnt any software that can format the protected portion of the card, some hardware devices can format it, Some Nokia phones, some camera
Locking is actually very useful unless you want android on the same SD card
If you do want to use Android as well then get a second SD card and pop it in when you want to use it.
WP7 its self CAN clear a protected SD card but it will keep it protected, so you can reflash new WP7 ROMS with protected SD cards without any issues at all, but it will always be protected unless you use a Nokia type device.
You can also format a locked card using your wm6.5 on hd2;-)
Sent from my Schubert using XDA Windows Phone 7 App
Thank you all!
pakure said:
You can also format a locked card using your wm6.5 on hd2;-)
Sent from my Schubert using XDA Windows Phone 7 App
Click to expand...
Click to collapse
Not much use when you've got wp7 on it hey (unless you have 2 hd2's of course )
pakure said:
You can also format a locked card using your wm6.5 on hd2;-)
Sent from my Schubert using XDA Windows Phone 7 App
Click to expand...
Click to collapse
No, it cannot. It says it is damaged on my topaz.
A buggered up partition table can be fixed with a propper format which is what 99% of people say "fixes" a broken card.
However, a "Protected" Card can not be formatted in this way, im have a chat with the SD association at the moment to see whats what, so far it is a software limitation on the PC that is stopping us clearing that data, in short if someone writes a program to do it, it will do it, the question is how!
can you guys see the partition on a PC partition app but not modify it? Or can you not even see the partition?
orangekid said:
can you guys see the partition on a PC partition app but not modify it? Or can you not even see the partition?
Click to expand...
Click to collapse
if a SD card has been locked its essentially unreadable in anything but the device that it was locked in, if you plug a locked (protected) SD card in a PC it will be detected in device manager but windows will not beable to access it, the SD association is a bit vague in their replys but apparently some OSs are able to format a protected card, MS isnt one of them unless there is undocumented flags that can be used at the command prompt, the best bet is probably Linux, I hate using Linux as a desktop but i do have it running as a VM server so i might give that a try a bit later
The funny thing is, its not complicated to do it (apparently) its just no one has really used the protected feature set of the SD standard
Also, (apparently, some SD cards use the protected area to store information other than the encryption key for the whole card, apparently this information might be used in read /write operations on the card, clearing the protected area to remove the SD card lock might have a negative impact on the cards performance.
pakure said:
You can also format a locked card using your wm6.5 on hd2;-)
Sent from my Schubert using XDA Windows Phone 7 App
Click to expand...
Click to collapse
Sorry, but it is confirmed. Windows Mobile 6.5 can not. Apparently Ubuntu does, I am testing!
dazza9075 said:
if a SD card has been locked its essentially unreadable in anything but the device that it was locked in, if you plug a locked (protected) SD card in a PC it will be detected in device manager but windows will not beable to access it, the SD association is a bit vague in their replys but apparently some OSs are able to format a protected card, MS isnt one of them unless there is undocumented flags that can be used at the command prompt, the best bet is probably Linux, I hate using Linux as a desktop but i do have it running as a VM server so i might give that a try a bit later
The funny thing is, its not complicated to do it (apparently) its just no one has really used the protected feature set of the SD standard
Also, (apparently, some SD cards use the protected area to store information other than the encryption key for the whole card, apparently this information might be used in read /write operations on the card, clearing the protected area to remove the SD card lock might have a negative impact on the cards performance.
Click to expand...
Click to collapse
Interesting. I did a few experiments and a whole heap of reading about this yesterday (Osx doesnt recognise the card either btw):
The card became locked during the update process from 7712 to 7720 during one of the many hard resets i did whilst installing the cabs (the sd fix cab was the last cab i installed). My mistake was not bothering to change the language from its default (English USA to English UK) so it would appear the card is also not only locked to a particular device but its language also.
One could test this by inserting the card, hard resetting and choosing USA as its language, however, it took 4 hours to get the device working to 7720 so im not doing that just yet; so i tried something else.
I put the encrypted card into my hd2, entered magldr and cleared the partition using services. I then entered usb mass storage and connected the device to my PC (win 7 x64). Whilst the card was not recognised in "my computer", if you look in camera&scanners in control panel, you will see magldr is recognised as a mass storage device but the device drivers for this fail to install properly. This is probably due to the "unknown" partition taking up the full capacity of the micro sd card and why it is not recognised by the PC hence it cannot be used for storage.
Unfortunately this also means no partition software will recognise the card, nor is it recognised in any digi camera, even after allegedly clearing the partitions via magldr.
I then had a thought would a nokia emulator work in unlocking the card? to which i havent researched any further as yet.
**EDIT** Apparently someone has decrypted and formatted a card using Ubuntu, im off to download and try it
**EDIT 2** not having much luck with ubuntu either, card not recognised........
same here, ubuntu disk manager (11.04 32-bit) shows sd card but 2.2 TB and can't format the drive or volume (i tried the same to clear mbr using magldr), ubuntu is not working
WEll, they havent been much further use, all they say is that is perfectly possible to do with software, the APIs have been there for years, its just that no one has ever really paid much attention to it, with the exception of Sat-Navs, professional Music gear etc.
Ive not had a chance to play with Linux yet but i would imagin that you need to think lower level than partition / MBR levels
From what i can gather from their cryptic responses is that when a SD card is setup to use the Secure feature, the device creates a key in the secure section, only that device can then access that section, the storage space on the card is then encrypted using that key, there is no way short of cracking the key to get access to either the secure section or the storage section. However, when you use an OS or Utility that makes use of the Secure protected area its possible to clear it, this would clear all the data obviously off the card, even disk analysers wouldnt be able to see it as it would still be encrypted.
What is concerning is that the Manufacturers have grown used to this special area and use it, apparently this area is used for IO operations, (probably some kind of cache or superfetch) this speeds things up by predicting what you are going to access next
What concerning is, if you have a class 10 device that as we all ready know uses methods to speed up sequential speeds to get that class rating, IF we manage to clear that protected area will the card be effected in terms of speed, conversly, could it improve random access speeds (WP7 essential) if its not farting around trying to predict sequential IO ops!
dazza9075 said:
yeah, at the moment, you have two choices
use the V1 ROM and be able to upgrade your ROM, you can install android still, you can not upgrade to 7712 / 7720 AND have access to your SD card UNLESS you lock the SD card
Click to expand...
Click to collapse
Of course you can update!
I am using V1 and have the 7720 build
has anyone been able to (in windows or linux) copy the partition on the card without modifying or formatting or anything? Just copying the partition to another card?
orangekid said:
has anyone been able to (in windows or linux) copy the partition on the card without modifying or formatting or anything? Just copying the partition to another card?
Click to expand...
Click to collapse
Nope, the card is not recognised, im working on it.
timmymarsh said:
Nope, the card is not recognised, im working on it.
Click to expand...
Click to collapse
I'm going to try as well. If we can just get a recognition/copy to work, then we can do dual-boot again. There has to be some way to copy the entire partition.
Finalforce1111 said:
Of course you can update!
I am using V1 and have the 7720 build
Click to expand...
Click to collapse
read it again,
note the big "AND"
you can not dual boot Mango 7712/7720 and android on V1
you can not dual boot at all with V2
you cant copy encrypted partitions, it doesnt work that way, its not like making a encrypted folder, its on a much lower level than that, its either encrypted or its not, you either have Mango or you have Nodo AND android
I still cant get the Protected SD formatted, im wondering if its reliant on the card reader supporting those commands.....
Mm the secret I think is gaining access to the hidden part of the card that contains the encryption key. I'm still working on Ubuntu and have a lead to follow up on.
Your right about the droid dual boot, this isn't my intention so others shouldn't get their hopes up ;-)
Sent from my HD2 Mango 7720 using XDA Windows Phone 7 App

[Q] HD2 and replacing SD, what must be done

Earlier this month took the leap from my original WM6.5 to WP7 Ultrafruit rom. And I love it. However my SD is kind of slow and it makes my phone reboot on occasion. I have bought myself a new SD card to replace it. I am a complete noob when it comes to these things so I have no idea what I need to do to avoid problems? I am humbly asking for a step by step guide telling me the things I need to do. I am also wondering if I can use my Live activation code again within the same month, or do I have to wait? ... or is it required at all? Thanks in advance....
Amphion79 said:
Earlier this month took the leap from my original WM6.5 to WP7 Ultrafruit rom. And I love it. However my SD is kind of slow and it makes my phone reboot on occasion. I have bought myself a new SD card to replace it. I am a complete noob when it comes to these things so I have no idea what I need to do to avoid problems? I am humbly asking for a step by step guide telling me the things I need to do. I am also wondering if I can use my Live activation code again within the same month, or do I have to wait? ... or is it required at all? Thanks in advance....
Click to expand...
Click to collapse
Well i have struggled with this too. Simply formatting the new card to FAT 32 and inserting it doesn't work.... I've tried.
I also believe that as of rom 7403 ( if i remember correctly) an SD card has to be installed during the flash/ install process which kind of suggest the OS grabs what it needs and relies on it!
There may be a way to format it so it is accepted but there are all manner of issues with brand /type/ speed of micro SD cards around, so my best advice would be to back up your data and re flash to the latest rom with the new card installed. If you are happy with the ROM you currently have you can also insert the card and do a hard reset ..but all of your data and apps will be lost.
I have used my activation code on 4 separate occasions ( while i was trying out different roms) and haven't had a problem so far.
Reading many posts on the subject has led me to believe that the code is usable on up to 5 devices but to be honest i've never tried this out.
Good luck
Some sd cards are simply incompatible and/or cause problems in wp7. There is a thread that lists all known usable/problematic/unusable sd cards. From what you have described you have a card that falls into the problematic category. (edit) http://forum.xda-developers.com/showthread.php?t=912904
After you get a card that is proven to work you will need to reset phone (settings, about phone, reset) your activation code will work FOR YOU as many times as needed. If someone else on different hardware uses your code that's when you/they will have to wait the required time.
Cheers
just make an image file of your Old card to the new one & it will work fine, the problem is the size.
One time I managed to image my 8gig to a 16gig card leaving an unpartitioned 8gig BUT somehow I managed to move it using easeus to merge with the android partition & now i'm trying to replicate it but somehow I cant

Storage card not working, Cant access WP7 HELP!

SCREEN HD2:
Storage card not working
Your storage cart has changed is
damaged or is non-compliant.
To fix this, turn off you phone and either
remove the storage card or replace it with
a new compliant card. Then you’ll need to
reset your phone to the original factory
settings.
To reset your phone, refer to the owner´s
manual.
I installed [19.7.2012][NT 8779 V1 18L 3La 3Lb]LEO_ML_51240101_R_5710902a_22515021 by ansar. Before I had this rom installed http://forum.xda-developers.com/showthread.php?t=953078. I had SPL-2.08.HSPL, Radio 2.15 and DFT MAGLDR Bootloader v1.13 installed. While using the HD2O© WP7 8779 (TANGO) The phone worked fine, I even was able to attain a activation code. (did it all in like 4 hours really late last night). So this morning I just flashed the one I said i installed 2nd above and thats when I started getting this problem. Ive tried the methods of the 1234 reset and things. So wondering if i have to go all the way back to stock 6.5 and work my way back again or if there is something that I can do. Because even booting up without SD card i still get the same error message.
did you format your card in PC before flashing new ROM?
sometimes behavior with SDcards is unpredictable... almost all problems in HD2 WP7 is related to SDcards...
dxdy said:
did you format your card in PC before flashing new ROM?
sometimes behavior with SDcards is unpredictable... almost all problems in HD2 WP7 is related to SDcards...
Click to expand...
Click to collapse
0k so i was able to get past it by going into madglr and pressing reset. But unfortunently the phone won't recognize any of my 3 sd card. 2 are 2gb and one is a 4gb. Is there anyway to get it to recognize them?
-thanks
krinilssen said:
0k so i was able to get past it by going into madglr and pressing reset. But unfortunently the phone won't recognize any of my 3 sd card. 2 are 2gb and one is a 4gb. Is there anyway to get it to recognize them?
-thanks
Click to expand...
Click to collapse
per other posts and threads...it's a hit and miss with sd cards. personally, i've never had any sd card issues using yuki rom, but roms from other chefs have caused sd card compatibility issues. there is something about the base wp7 rom by those other chefs which causes sd issues. i have used sandisk, 3c, topram, lex brands...no problems with yuki, but causes problems with pdaj, hd2o, and ansar roms.
and fyi...there's no need to format the sd prior to using with wp7. wp7 will reformat the whole card anyway.
another issue you may have with your sd card is if you used them with yuki. if this is the case, you need to reinstall base yuki, install devstorageunlock cab, unlock sd card, then you can use the cards with roms by other chefs.

[Q] Install android on internal storage without sd card?

Hi guys,
I have an old HTC HD2 and today i have been trying to find a version of android that installs on the internal memory (NOT on the sdcard, which I don't have). I think it has to be a DAF file? On several sites and tutorials I have seen people having some version of android installed on the phone, but i have been looking on here for a few hours now but I'm not able to find any... Does it still exist? I already task29 my phone so i think it's completely formatted and has no OS on it now, so If anyone knows a link to a android version that can be installed on the phone memory without sd card, it would help me a lot!
Thanks in advance!
I think those builds are still available, but you need to search in the very od threads. ANd you need to make sure it is Sense 1.0 because newer versions are larger so either you would not have enough space for user data or the ROM would not fit internal storage anyway.

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