Database Users

[Q] (Q) XBmod DEV_STORAGELOCK Procedure

Hi everyone my first post and probably a stupid one at that... anyway I have three SD cards all locked after failed upgrades and would like to unlock and reformat them on my HD2 now with a successful upgrade to Mango 7.5. Could someone tell me the procedure for doing so, because the storage unlock won't work when the current Micro SD card is removed from the phone before or after booting Mango.
I know one of the locked cards is compatible but is locked due to an outage during one of my previous upgrade attempts, its 16 gig and I would like to replace the current 2g for larger storage. If the 16gig card was unlocked would this even be possible without having to reflash everything?
thanks for your help...

The encryption is unique to each device, that means you can't take a SD card and format it in another WP7.
I don't know if the seed is generated randomly or based on read only values (IMEI?) but my best guess would be that you will have to use one of the methods described in this thread.

plant100 said:
Hi everyone my first post and probably a stupid one at that... anyway I have three SD cards all locked after failed upgrades and would like to unlock and reformat them on my HD2 now with a successful upgrade to Mango 7.5. Could someone tell me the procedure for doing so, because the storage unlock won't work when the current Micro SD card is removed from the phone before or after booting Mango.
I know one of the locked cards is compatible but is locked due to an outage during one of my previous upgrade attempts, its 16 gig and I would like to replace the current 2g for larger storage. If the 16gig card was unlocked would this even be possible without having to reflash everything?
thanks for your help...
Click to expand...
Click to collapse
starting with the 2Gb one that is in the phone.
1.Send extrapartition 1Gb cab.
2.do hard reset (1234)and check in settings/about if partition is applied
3. unlock the storage using storagelock tool and remove card, check you can read card in pc.
4 put in second card. do1234 hard reset
5 do step 3 again
6 put in your biggest bestest card and do 1234 hardreset.
7 send extrapartition remove cab and 1234 hard reset
then you can send a bigger extrapartition, I have 7Gb on my 16Gb SD
8 You can then in pc use gparted in linux or Easeus partition master in windows to resize and format your spare sd cards

Thanks for that, i was sure that because all three cards were created and failed within the same phone then at least one would unlock, is there not a method to take out the present sd card swap with the locked one, run the storage unlock reboot then reformat but not necessary in the order as i have tried that and it hasn't worked, i don't have access to any other phones and really need the increased storage and a card to run some android SD builds. In respect of the last question if i was to get a compatible 32gig card could i just swap it out with the 2gig or copy the 2 gig partition and put in on the 32gig without having to go back to 6.5 and do the update all over again... i don't know... i am a bit lost with all this and its a steep learning curve..

Thanks Robbie, just what i was looking for will give it a try and let you know how i get on.. you answered my question in the middle of me typing it.. strange!!!!

Robbie P said:
starting with the 2Gb one that is in the phone.
1.Send extrapartition 1Gb cab.
2.do hard reset (1234)and check in settings/about if partition is applied
3. unlock the storage using storagelock tool and remove card, check you can read card in pc.
4 put in second card. do1234 hard reset
5 do step 3 again
6 put in your biggest bestest card and do 1234 hardreset.
7 send extrapartition remove cab and 1234 hard reset
then you can send a bigger extrapartition, I have 7Gb on my 16Gb SD
8 You can then in pc use gparted in linux or Easeus partition master in windows to resize and format your spare sd cards
Click to expand...
Click to collapse
Just a quick update to say that those instructions worked a treat, I how have more storage a few extra cards to try out some SD builds before I take the plunge for the dual boot. I think where I was getting confused was the difference between the (1234) hard rest and the hold vol - & + buttons while turning on the phone on reset. Robbie once again many thanks bro…

Wow I didn't think it was possible to save your sd cards after they been ruined through failed attempts...
I thought the unlock tool was only useful for the sd card that successfully upgrade to mango

Moschino02 said:
Wow I didn't think it was possible to save your sd cards after they been ruined through failed attempts...
I thought the unlock tool was only useful for the sd card that successfully upgrade to mango
Click to expand...
Click to collapse
Yeah me also, that’s why I have been pulling my hair over this for the last couple of weeks, but it does work…. it’s just fining the right procedure and because all the cards were created on the same phone (EU Leo unlocked TM) I think that makes a difference. The other two cards I now know are incompatible so they have become my storage for android SD builds... I don’t think people are aware of this, maybe it should be a sticky or something… with credit to Robbie

Robbie P said:
3. unlock the storage using storagelock tool and remove card, check you can read card in pc.
4 put in second card. do1234 hard reset
Click to expand...
Click to collapse
hey plant man, can you just clarify something ..
do we send dev_unlock.cab after step2?
storagelock tool?? where will we find this on the phone?
step 4 - when you insert another corrupt card into phone would phone load up ?
i wonder what are the reasons behind step 1 - does this vary depending on what type of sd card memory you have?
luckily i borrowed a sony vivaz but needs to go back and i havnt got mango yet..i imagine this trick would work on all versions ie 7403?
off the topic..cab sender option 'B' anyone know if this would restore to orginial state ie 7004 if cab sending failed? to prevent from reflashing 7004 all the ***ing time
sorry for the questions...i cant do anything without understanding things first

Moschino02 said:
hey plant man, can you just clarify something ..
do we send dev_unlock.cab after step2? you don't need to do chevron type unlock for this. you are getting confused with your locks see http://forum.xda-developers.com/showthread.php?t=1265321 for explanations
storagelock tool?? where will we find this on the phone? next to where you found extrapartion, see http://forum.xda-developers.com/showthread.php?t=1250869 post 1
step 4 - when you insert another corrupt card into phone would phone load up ?
It will if SD is encrypted but compatible
i wonder what are the reasons behind step 1 - does this vary depending on what type of sd card memory you have?
because minimum size=minimum download and install time also Plant100 had a 2Gb card to start
luckily i borrowed a sony vivaz but needs to go back and i havnt got mango yet..i imagine this trick would work on all versions ie 7403?
off the topic..cab sender option 'B' anyone know if this would restore to orginial state ie 7004 if cab sending failed? to prevent from reflashing 7004 all the ***ing time
yes but do it before you send the partition as any change of partition size will render backup unrestorable. After you have set up your good sd and everything is fine, do a backup then
sorry for the questions...i cant do anything without understanding things first
Click to expand...
Click to collapse
No worries

hey plant man, can you just clarify something ..
do we send dev_unlock.cab after step2? no just send once
storagelock tool?? where will we find this on the phone? you need to send it as a cab file with the cab sender tool can be found on the main thread
step 4 - when you insert another corrupt card into phone would phone load up ? yes for some reason when you do a hard rest
i wonder what are the reasons behind step 1 - does this vary depending on what type of sd card memory you have? i have no idea maybe robbie might be able to advise
luckily i borrowed a sony vivaz but needs to go back and i havnt got mango yet..i imagine this trick would work on all versions ie 7403? again not sure
off the topic..cab sender option 'B' anyone know if this would restore to orginial state ie 7004 if cab sending failed? to prevent from reflashing 7004 all the ***ing time dido
sorry for the questions...i cant do anything without understanding things first

Hi,
is there a chance for a xap version of DEV_STORAGELOCK ?
Regards

SD card isn't recognized.

After attempting to follow the confusing steps in the xbmod-yuki rom my phone froze mid-update and my sd card spazzed out and now my phone says there is no sd in the slot when its in there....I can't connect to computer either.
SD Formatter can't even detect it.

nvm figured it out my self, plus i posted in the wrong section.

Sd Card Woes
pteradactyle said:
nvm figured it out my self, plus i posted in the wrong section.
Click to expand...
Click to collapse
Would you mind sharing what you did to fix your SD? I'm having an issue related to Mango, don't know if it's the same as yours, but I'm trying to explore all avenues.

simpleton681 said:
Would you mind sharing what you did to fix your SD? I'm having an issue related to Mango, don't know if it's the same as yours, but I'm trying to explore all avenues.
Click to expand...
Click to collapse
Care to explain what the issue is exactly with your SDcard, to keep the topic as clean and efficient as possible?

I have same problem
I have same problem.
pteradactyle said:
After attempting to follow the confusing steps in the xbmod-yuki rom my phone froze mid-update and my sd card spazzed out and now my phone says there is no sd in the slot when its in there....I can't connect to computer either.
SD Formatter can't even detect it.
Click to expand...
Click to collapse

KrewsialNL said:
Care to explain what the issue is exactly with your SDcard, to keep the topic as clean and efficient as possible?
Click to expand...
Click to collapse
Sorry, yes. I installed WP7 Mango (XBmod-Yuki rom V2), SD card was formatted and locked. I removed WP7 without knowing this would happen, and now I can't get the card to be recognized in Windows, Linux, OSX, or any of my other devices that support MicroSD. Been searching for a fix, but it looks like I'll need to find a Symbian device to format the card.
After I posted before, I was able to reinstall the original WP7 rom and the card was recognized after a hard reset, but I'm not having any luck getting the unlock cab to work. Actually, now, after trying to send the cab to my device, restarting with the card in the phone or doing a hard reset results in the phone just not loading the OS.
Sorry for being long winded, but I'm just about out of ideas. Thanks for any help

simpleton681 said:
Sorry, yes. I installed WP7 Mango (XBmod-Yuki rom V2), SD card was formatted and locked. I removed WP7 without knowing this would happen, and now I can't get the card to be recognized in Windows, Linux, OSX, or any of my other devices that support MicroSD. Been searching for a fix, but it looks like I'll need to find a Symbian device to format the card.
After I posted before, I was able to reinstall the original WP7 rom and the card was recognized after a hard reset, but I'm not having any luck getting the unlock cab to work. Actually, now, after trying to send the cab to my device, restarting with the card in the phone or doing a hard reset results in the phone just not loading the OS.
Sorry for being long winded, but I'm just about out of ideas. Thanks for any help
Click to expand...
Click to collapse
The way I fixed that is an aweful thing to do, but it worked.
1. Flash to stock Windows Mobile 6.5 (with locked SDcard in there)
2. Task29
3. Install MAGLDR
4. FLASH WP7 (still, with that same SDcard in there)
After it's flashed, do not update, but take the card out and stick it in a card reader (hell, even the magldr >> usb storage function works).
Windows will detect 200 MB on that card. Format it with SDformatter and it will be good again.
Note: That specific card is not compatible with WP7 MANGO, so don't try to use that ever again ;-)
It took me a week to figure this out, but i successfully managed to revive my 8GB Sandisk Class 4 card, which I now will use in my camera instead of the HD2
Hope this helps!

AWESOME!
KrewsialNL said:
The way I fixed that is an aweful thing to do, but it worked.
1. Flash to stock Windows Mobile 6.5 (with locked SDcard in there)
2. Task29
3. Install MAGLDR
4. FLASH WP7 (still, with that same SDcard in there)
Click to expand...
Click to collapse
I'm going to try this, but I'm wondering which WP7 Rom you flashed. I originally was using the Yuki Update rom, then once all the badness happened, I flashed to a much older one, then back to Yuki. However, in each of those cases, I never got the 200MB partition. Anyway, I'm giving this a shot, will let you know. Thanks!

If you want only format the SD card
http://forum.xda-developers.com/showthread.php?t=912528

hautsi said:
If you want only format the SD card
http://forum.xda-developers.com/showthread.php?t=912528
Click to expand...
Click to collapse
Hi hautsi, welcome to the forum.
Unfortunately the thread you posted, dated January, only works for the pre-mango ROMS (and possibly XBmod/Yuki V1)
Look here for SD format http://forum.xda-developers.com/showthread.php?t=1242071
also Krewsia1nl's method should be posted there

No Dice
Robbie P said:
Hi hautsi, welcome to the forum.
Unfortunately the thread you posted, dated January, only works for the pre-mango ROMS (and possibly XBmod/Yuki V1)
Look here for SD format http://forum.xda-developers.com/showthread.php?t=1242071
also Krewsia1nl's method should be posted there
Click to expand...
Click to collapse
Hey again all,
It's possible there's something else wrong with my card at this point. I tried Krewsia1nl's method and it seemed like it might work, but I still never got any additional partitions that my PC could recognize. I tried it a couple of times, 12st with an older WP7 rom I found in the HD2 WP7 dev section, and 2nd with the original Yuki rom I was flashing. Same issue in both cases.
What I did find is that I can see the card in the Yuki rom after flashing, BUT if I restart the device, it freezes, I have to remove the card to be able to boot it, and when it reboots, it tells me I must insert the card to continue. Great...
This also poses a problem with unlocking the card in WP7 with the unlock or partition cabs. To install them, the cab sender restarts your device. Once that happens, my phone freezes and I have to remove the card. All subsequent attempts to reboot or reinsert the card are met with either nothing recognized, or an error (It's also important to note that I can only see the card on first boot after following Krewsia1nl's method-if I try to hard reset with the card in, the phone just keeps freezing).
So, for now, that's where I'm at. I'm going to try the UBCD Killdisk method and I'll report whether or not that works, in case anyone finds themselves in this particular, sinking boat. Killdisk Method is here:
http://forum.xda-developers.com/showthread.php?t=1280293
Thanks again for your help, all. Love XDA <3

Killdisk didn't work either. Guessing my card is fried, but I'll still try a Nokia if I can find one.

I also tried to install Yukis Mango 7720 but not with good result.
Does this 7720 work in any HD2...
Ubuntu doesn't do anything if you add your WP7 SD card to reader.
Win7 shows that you have "Removable Disk" but if you try to access it Windows says "unable something....".
I thought that I have also two fried SD card because this 7720 testing.
But Nokia E51 format successfully both cards )

i have an old Nokia 3650 and a few cards that mango has ruined. Now if I can just find the plug for the nokia......wonder if it will format them ?

Just got my 32 class 4 SanDisk in the mail. How do I release the card in tmous hd2 and add 32 to set up dual boot droid. Reflash from start.... Awww lawd! Took all night! Can I hard rest with no card and do it with cabssnder to partition card and card unlock and party with rum tonite?
Sent from my HD2 using XDA Windows Phone 7 App

Btway.... Xda devs and forum participants could teach the worldwide manufacturers a thing or two about the way it's done. Thanks to all.
Sent from my HD2 using XDA Windows Phone 7 App

hautsi said:
I also tried to install Yukis Mango 7720 but not with good result.
Does this 7720 work in any HD2...
Ubuntu doesn't do anything if you add your WP7 SD card to reader.
Win7 shows that you have "Removable Disk" but if you try to access it Windows says "unable something....".
I thought that I have also two fried SD card because this 7720 testing.
But Nokia E51 format successfully both cards )
Click to expand...
Click to collapse
Can you tell me what SD Card did you manage to unlock?
I tried an E63 for my Sandisk Class 4 32Go unsuccessfully

What an absolute disaster the BTTF Yuki rom is...It is inevitable, most will lose their sd cards, it cost me $45 to replace. Could we put a BIG warning up for these roms, GUARANTEED to destroy your SD card? Because it will, at some point for sure, you will reload the rom and that's when the fun starts..AVOID AT ALL (cough) Costs...

evereste said:
What an absolute disaster the BTTF Yuki rom is...It is inevitable, most will lose their sd cards, it cost me $45 to replace. Could we put a BIG warning up for these roms, GUARANTEED to destroy your SD card? Because it will, at some point for sure, you will reload the rom and that's when the fun starts..AVOID AT ALL (cough) Costs...
Click to expand...
Click to collapse
You are completely entitled to your opinion and to post it here.
Many people have successfully upgraded to Mango and have not posted here at all.

Robbie P said:
You are completely entitled to your opinion and to post it here.
Many people have successfully upgraded to Mango and have not posted here at all.
Click to expand...
Click to collapse
I'm sorry, did not intend to knock the rom, the rom is excellent, the concern, it will ultimately cause you much duress as to the sd card at some point, that's my only point. Not many folk expect to lose the sd card after installing... and reinstalling...yes, there are work arounds, but, they entail, much ado and worst case, nokia.kodaj devices...there should be a MASSIVE warning as to SD card...yes, the small print offers cabs and tinkering to avoid the 'lock', but most of us don't expect any such chicanery.-)

[Q] Dualboot Android and Windows phone 7.5

Hello,
So unfortunately i must write in to this forum because i am a newbie
I work for it since 3 days and searched for solutions but now i must ask, because i tried this 15 times and it doesn't work...
This helps me a bit ( http://forum.xda-developers.com/showthread.php?t=913815 ), but no one have this problem...
So i want a dualboot on my hd2 with win phone 7.5 and android on one sd card (later change the boot in magldr when it works).
Okay first i load the storage lock on my hd2 to unlock the card then i put it off and take the sd card in a reader to change the partitions (like in this video: http://www.youtube.com/watch?v=JTHRAUHZHlo&feature=relmfu ). In the video it works to put on the phone after this changes, but on my hd2 i take the sd card into the phone an after the reboot comes only that the storage card changed and is damged. the only way after this is to turn off the phone and do a hardreset...
Is there a solution for my problem that i can change the partitions and take the sd card into the phone to boot win 7.5 normally?
thank you

Hey, I´m guessing you are on xbmod/yukis WP7 Rom?!
Then this is the way to go:
http://forum.xda-developers.com/showpost.php?p=17306513&postcount=1
xboxmod said:
SDCARD & ANDROID RELATED CABS:
Download link
These files change the size and format of the SDcard extrapartition
This partition is used as working part for updates and to save logs
It is usually formated as FAT16 and sized of 200MB
So choose the file which the number of GB you want, send the cab to device and Reset
The first partition will have the new size now and already formated in FAT32
So you can use it as USB key or for Androïd without having to do it manually
Take care if you reset again datas on it will be lost
If you want to revert back to FAT16, 200MB just use DEV_EXTRAPART_REMOVE and reset
This feature is to be used beside DEV_STORAGELOCK.cab
With this tool you can unlock your SDcard
The card will be relocked after each reboot to WP7 what is a security in case of stolen device
So use the tool each time you want to boot to Androïd or use SDcard as USB key.
DEV_STORAGELOCK.cab
this will install unlock tool for your sd card (possibility of dualboot)
DEV_STORAGELOCK_REMOVE.CAB
(remove unlock tool take care sdcard will be relocked at reboot.)
(those need a reset from about screen)
DEV_EXTRAPART_10G.cab
DEV_EXTRAPART_12G.cab
DEV_EXTRAPART_14G.cab
DEV_EXTRAPART_16G.cab
DEV_EXTRAPART_18G.cab
DEV_EXTRAPART_1G.cab
DEV_EXTRAPART_20G.cab
DEV_EXTRAPART_2G.cab
DEV_EXTRAPART_3G.cab
DEV_EXTRAPART_4G.cab
DEV_EXTRAPART_5G.cab
DEV_EXTRAPART_6G.cab
DEV_EXTRAPART_7G.cab
DEV_EXTRAPART_8G.cab
DEV_EXTRAPART_REMOVE.cab
Click to expand...
Click to collapse
Forget about the thread you quoted in your post. It is a good thread, but
1. it won't work with xbmods WP7 Rom and
2. it is too complicated
Xbmods method is super easy, worked perfectly for me. Follow the instructions including the hard reset and you are good to go...
Greetz Ric

hey
it works
okay a bit stupid, but what must i do at next
Do the Sd card in the card reader and put android on it (and change then the files) or is there something before like in the video?
thanks

Hey,
just to clarify, you already sent the "DEV_STORAGELOCK.cab" and the "DEV_EXTRAPART_8G.cab" (8GB just for example) to your device?
Then you have to use the storagelock app in WP7 to unlock the card.
When unlocked take the sd card out of the device, put it in a card reader and connect to PC.
If you are undecided use this android build: http://forum.xda-developers.com/showthread.php?t=957652
This build includes optional rootfs.img that allows to boot build from magldr (!readme! in /sdcard/Android/SDMAGLDR)). So read the readme file that comes with it, exchange the 2 files and then copy the android folder (The whole folder!!!) to the root of your sd card!
To boot android, you have to choose it from Magldr. I think it's point 3 and is called Boot AD/SD.
If you need more help booting Android from Magldr just yell, then I have to restart my device and look it up ;D
Greetz Ric

hey ;D
so i do this steps and it works fine thanks a lot for your help
Thanks, you are nice

[Q] Help Needed Please - Storage Card Not Working

Hi,
After a long history with successful 6.5 updates I thought I'd try WM 7!
I've read the storage card posts and tried a hard reset both with my card and without but always get to the same Storage Card not working error.
I don't have a Nokia to reformat my card but have tried reformatting on the PC.
There is a bit I haven't been able to follow using magdlr 'services' option - how do i stop WM7 from booting and get back to the magdlr menus?
Some advice for a noobie please - don't want to brick my phone but not that fond of the Storage Card Not Working screen either!

thebearhack said:
Hi,
After a long history with successful 6.5 updates I thought I'd try WM 7!
I've read the storage card posts and tried a hard reset both with my card and without but always get to the same Storage Card not working error.
I don't have a Nokia to reformat my card but have tried reformatting on the PC.
There is a bit I haven't been able to follow using magdlr 'services' option - how do i stop WM7 from booting and get back to the magdlr menus?
Some advice for a noobie please - don't want to brick my phone but not that fond of the Storage Card Not Working screen either!
Click to expand...
Click to collapse
I'm sorry to hear about your issues. The micro SD card you've fit in your phone is too slow to cope with the constant read/write imposed by the OS.
The card you've used is unusable unless you unlock it by sending the unlocker cab to your device, unlock it, then format it on your computer. You could also format it on a symbian, nokia device.
Unless you mention the specific part number of your micro DS and brand, I can't help you further, with regards to compatibility, however, some models are proven to work flawlessly on WP7 powered HD2. ( such as sandisk 32 GB)
Make sure to further research, and hopefully you get this sorted out

only old Yuki (Back to the future) ROM lock cards...
all new ROM's not lock cards and unlocking or formatting with nokia device not necessary
if card not working: simple, not supported.. you must buy new card...
you cant brick phone... just read my install tutorial from signature if you something dont know...

Thanks for advice.
For benefit of others the symptoms I had were down to initial install. I needed to use Magldr to free up last 24 of nand memory and then reflash. Now all working.
As ever none of the stickies quite cover everything, but your help and another google session saved the day.
Thanks to the developers! WP7 giving my phone an all new feel.

[SOLUTION] Unlock SDCARD after WP7 the easy way...

Hey Guys
I had a quick look around the forum and on Google, but I didn't see anyone else having found this out, so here it is...
You go into MADLDR, SERVICES, and then CLEAR SD MBR, which will delete the partitioning. Then, if you use EaseUS partition master (google it) to create a primary FAT32 partition and then format it, it will recognize it in another android phone (well, it did in my xperia play).
If somebody else who has a HD2 and another android phone could give it a go and let me know if it works, I would be grateful.
AND.... please hit thanks if it works for you!
EDIT: Actually, if you just CLEAR SD MBR in MAGLDR, SERVICES, then put the SD card in another phone, it asks if you want to format it. Then you don't have to mess about with EaseUS partition manager! Result!!

if card used with Yuki ROM must unlock first with cab file or formatted in old Nokia phones
SD cards from all others (Pdaimatejam, ansar, HD2Owner...) is easy format with SDFormatter (in option must select "format size adjustment)
next time look here on forum.. too much posts about this is here...

waste of space
Mate, what a waste of space - sounds like your SDCard was never "locked" in the first place

Well, actually it 'was' locked, because I put it in my xperia play and it didn't recognize it until I did this. Also, don't speak to me like that - it's very rude.

builtonRock said:
Well, actually it 'was' locked, because I put it in my xperia play and it didn't recognize it until I did this. Also, don't speak to me like that - it's very rude.
Click to expand...
Click to collapse
no is not locked... other phones cant read WP7 partition... locked sd card is when you cant format it...

builtonRock said:
Well, actually it 'was' locked, because I put it in my xperia play and it didn't recognize it until I did this. Also, don't speak to me like that - it's very rude.
Click to expand...
Click to collapse
If you had searched you would have found the thread mentioned below, rather than wasting space here - it is not rude to be honest.
See thread devoted to this
Confirmed Devices for unlocking WP7 encrypted SD Cards
http://forum.xda-developers.com/showthread.php?t=1242071
See my comment:
http://forum.xda-developers.com/showpost.php?p=32978094&postcount=220
the three possibilities:
1. fully LOCKED and Win O/S UNRECOGNIZED SDCards - happens when you have a problem with the WP7 install (only a Nokia device will unlock)
vs
2. A Rom locked SDcard, such as locked by Yuki and Xboxmod's rom (needs DEV_STORAGELOCK.cab or Nokia device to unlock)
vs
3. Win O/S RECOGNIZED but unreadable SDCards (with the standard 200 partition of the newer WP7 roms).

Whatdoyaknow said:
If you had searched you would have found the thread mentioned below, rather than wasting space here - it is not rude to be honest.
See thread devoted to this
Confirmed Devices for unlocking WP7 encrypted SD Cards
http://forum.xda-developers.com/showthread.php?t=1242071
See my comment:
http://forum.xda-developers.com/showpost.php?p=32978094&postcount=220
the three possibilities:
1. fully LOCKED and Win O/S UNRECOGNIZED SDCards - happens when you have a problem with the WP7 install (only a Nokia device will unlock)
vs
2. A Rom locked SDcard, such as locked by Yuki and Xboxmod's rom (needs DEV_STORAGELOCK.cab or Nokia device to unlock)
vs
3. Win O/S RECOGNIZED but unreadable SDCards (with the standard 200 partition of the newer WP7 roms).
Click to expand...
Click to collapse
Ok, my bad...

This is slightly off topic, but its the most relevant place I could find for this question. I currently have a tri-boot setup with Pdaimatejam Windows Phone 7.8 and NativeSD android. Is it possible for me to interchange Windows Phone roms (downgrade to 7.5) and have the new ROM detect the windows partition straight out, or will I have to start from scratch again and reformat all partitions?

lkashl said:
This is slightly off topic, but its the most relevant place I could find for this question. I currently have a tri-boot setup with Pdaimatejam Windows Phone 7.8 and NativeSD android. Is it possible for me to interchange Windows Phone roms (downgrade to 7.5) and have the new ROM detect the windows partition straight out, or will I have to start from scratch again and reformat all partitions?
Click to expand...
Click to collapse
I'm pretty sure you have to start again from the beginning and reformat all the partitions. WP7 always reformats the SD when it does the setup.

builtonRock said:
I'm pretty sure you have to start again from the beginning and reformat all the partitions. WP7 always reformats the SD when it does the setup.
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Thats what I ended up doing Thanks!

I can not fix my SD Card! Please help
Hi, I followed your tips but no lucky. I have 16g SD card, after install WP7 (first time) with two steps in Magldr (Services->UseLast24... and Services->Clear MBR), now my card can not recognized. So please help me !!!

bachpv508 said:
Hi, I followed your tips but no lucky. I have 16g SD card, after install WP7 (first time) with two steps in Magldr (Services->UseLast24... and Services->Clear MBR), now my card can not recognized. So please help me !!!
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you followed wrong tips...
you need format card with this
https://www.sdcard.org/downloads/formatter_4/SDFormatter4exe.zip
in Option before format turn on "format size adjustment"
if you used YUKI ROM (BTTF) then you must unlock card before format...

am having the same problem
how do I. use a SD card from a windows phone in another. if you don't help me at least I get 16gb of unusable space

in post before yours i write how to format card and give link...