If one enables full device encryption in Ice Cream Sandwich, am I correct in assuming that that the internal SD of that device is now not going to be available in the CWM recovery mode? And even if it was, the root fs would not be available? If so, this pretty much would make CWM flashing your device near impossible?
Does CWM even work if you use FDE? Or is it planned/
The question I guess is, when do you input your encryption password? Is it some pre-boot step?
I really want to enable device encryption but I can't find enugh details on how it works.
I did read this post on it., but it doesn't really answer my questions. And it is unclear if it encrypts the internal SD, or just the root FS?
http://source.android.com/tech/encryption/android_crypto_implementation.html
No one knows anything about this?
I got a Gnex today from Verizon in the US and I encrypted my phone after I unlocked the bootloader but before rooting. As a result I don't think I will be able to root because it doesn't seem that the modified boot.img that the instructions tell me to use can mount the encrypted system (it sat at the Google logo w/ the unlocked icon for 10 minutes before I pulled the battery and let it boot the stock boot.img) which came up fine.
It seems the only way to decrypt the phone is by doing a factory reset.
That's all I know. That being said, while a custom recovery may work for wiping partitions (such as cache), it would probably be mostly useless until the custom recovery is updated to support the encrypted file systems. I'm a *NIX user and an engineer, but don't have a lot of experience with Android's internals, so take all that with the appropriate sized grain of salt.
Regards,
Chris
Bump.
Anyone experimented with full device encryption / ROM flashing / SD Card? I'm curious about this as well, but not curious enough to experiment.
I dident try it myself, so i dont exactly know, how this works. But i think device encryption shouldent completly block clockworkmod recovery.
I think it could be a problem to make a backup while your device is encrypted. But i think it shouldent be a problem to recover a old system over an encrypted one. Encryption keeps people without the key away from reading data. This dosent mean you cant wright something over it and replace the locked data with some new one. But then you defenitly loose the old data. I dont think you can flash a new ROM or a recovery without a full wipe. You probably gona loose all the data you had on the old system.
But i general i think this is anyway a good think to do when you flash a new ROM.
I think you could give it a try, without briking your phone. But i dident try it, so i cant take any responsibility.
Would any of you happen to know how to get to the diagnostic mode?
ryfly65 said:
Would any of you happen to know how to get to the diagnostic mode?
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Click to collapse
I sonst exactly know hat diagnostic Mode you mean. Depends hat Diagnose you want to run. Do you want to read the logfiles in your phone, wher you can see what ist doing? You could use the app alogcat. An other way would be to run logcat over Eclipse.
Sent from my HTC Desire HD using XDA App
Hilmy said:
I sonst exactly know hat diagnostic Mode you mean. Depends hat Diagnose you want to run. Do you want to read the logfiles in your phone, wher you can see what ist doing? You could use the app alogcat. An other way would be to run logcat over Eclipse.
Click to expand...
Click to collapse
I need to edit modem information and enable a diag port for QPST, essentially allowing me to flash it to another carrier.
Is there any new information on this? Any help would be very appreciated!
Sent from my Galaxy Nexus using XDA App
I encrypted mine after flashing the stock ICS 4.0.3 image and rooting. CWM still loads, but when I try to use USB mass storage, windows tells me it needs to be formatted before the SD card can be used.
You can use titanium backup to make backups of your stuff, and restore them to a non-encrypted phone. I have found no other way to unencrypt the phone than factory reset either. When you encrypt, then go to settings > security > encryption, it just has a greyed out area saying "Phone is encrypted", which is stupid and needs to be fixed.
nevarDeath said:
I encrypted mine after flashing the stock ICS 4.0.3 image and rooting. CWM still loads, but when I try to use USB mass storage, windows tells me it needs to be formatted before the SD card can be used.
You can use titanium backup to make backups of your stuff, and restore them to a non-encrypted phone. I have found no other way to unencrypt the phone than factory reset either. When you encrypt, then go to settings > security > encryption, it just has a greyed out area saying "Phone is encrypted", which is stupid and needs to be fixed.
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So if I factory reset the device from CMW I will not loose my pictures or TB in the internal SD?
What about flashing a new ROM?
Thanks!
I have been playing with ICS + FDE for several days doing different things. First off this is:
Nexus S 4G, running Pete's crespo4g OTA ROM
I flashed with CWM which is still on there and runs fine.
However: /data and /sdcard and /system (?) are encrypted and CANNOT be mounted.
To restore you have to 1) make a full backup over USB to a PC of the whole SDcard (or at least the important folders).
2) wipe and reformat everything. This isn't just a factory reset, this kills the sdcard as well.
3) mount (hopefully) the newly reformatted /sdcard and blow your backup from the PC onto the /sdcard
4) use CWM to restore a previous ROM.
That's pretty much it, give or take. Not for the faint of heart. However, if you are concerned enough to want encryption, you don't want to just say reboot recovery and voila all your files are belong to us, right?
---------- Post added at 03:58 PM ---------- Previous post was at 03:34 PM ----------
Also, the backup to PC part is just your sdcard. It doesn't back up the whole system. There might be a way to do that via adb, I don't know.
So i am running rooted runnig miui.us rom. I just tried to encrypt phone.. It ran for 2 and a half hours and I got impatient. thinking maybe i shouldnt have done it... Then after a little bit of panic i said **** it if i lose data i lose data... so i powered off and back on hoping i didnt and the rom booted back up with all my data intact..... •••••• Wish I had more to report but im not doing that again until someone can confirm that it works fine...... I have tried booting into cwm yet.. If i have an issue when i need to boot illl report back but if you dont hear from me here then assume I was able too.
Pete's to CM9 - still encrypted
IT does indeed take a fairly long time to encrypt. If I understand correctly it will build the encrypted partition on a loopback (or something like) before erasing the original (by overwriting?).
I've got more to report. I followed my plan (couple posts back) for unencrypting and reflashing my phone. (Nexus S 4g).
The first bits of this worked fine. I was able to flash CM9 onto my phone (works like a champ btw). While the phone was in recovery I mounted the SD and copied my backup back onto it.
However...
When CM9 booted I STILL got the "unlock your device" screen, still the same password, and it decrypted and booted. That was surprising, but not as much as when I looked for the SD card, it said it was incorrectly formatted! The only thing to do was reformat and copy with the phone on and unlocked.
So lessons learned: 1) a factory reset from _inside_the_ROM_ doesn't remove the encrypted partition at all and
2) As far as I can tell, the SD card _is_ encrypted along with /data
I'd be very interested to hear other's experiences, especially someone who can remove their SD storage.
Undoing FDE
First off - Lacking a device with removable storage to test with all I can tell you is that the sdcard is not accessible by any normal means after FDE is enabled without booting into the encrypted system.
"Removing" FDE required three steps beyond normal:
-Factory reset from within the ROM
-factory reset/wipe at recovery and/or format /data
-once into a running ROM, reformat the sdcard
Once all that is done (in addition to normal setup for ROM) you should be able to operate normally again.
problem with encryption on sgs2 with android 4.0.3
I really want to enable my device encryption too, but I can't !!!
the phone start encrypting after he ask me for a new secure password, rebooting and asking again for my password and surprise!!!.... the password is not match ?!?!
I repetead these steps for 3 times but the same result...the password does not match!!! ?
Please, if someone found a trick to repair this inconvenient, tell us in this post steps to be followed.
Regards!
SGS2, Android Icecream 4.0.3
leech2082 said:
So i am running rooted runnig miui.us rom. I just tried to encrypt phone.. It ran for 2 and a half hours and I got impatient. thinking maybe i shouldnt have done it... Then after a little bit of panic i said **** it if i lose data i lose data... so i powered off and back on hoping i didnt and the rom booted back up with all my data intact..... •••••• Wish I had more to report but im not doing that again until someone can confirm that it works fine...... I have tried booting into cwm yet.. If i have an issue when i need to boot illl report back but if you dont hear from me here then assume I was able too.
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Click to collapse
I did exactly what you did, and so far everything seems to be intact Thanks!
Hi all,
I m facing a trouble with my Honor 9
I first installed the TRWP and magisk on my stock rom. After a day or two my files in the internal storage were been encrypted (except when I look them into twrp). I tried to flash and restore to stock but he didn't let me access to write on the internal storage. I try to move the update.app in the dload folder but it's too big for the fat 32 partition. I tried to extract the recovery.img and the system.img to reflash them with twrp but error each time. Tried to flash the zip directly error on 2 on 3. I tried to flash lineage 14.1 it s flash good until the end but the phone stops and make black screen re-enter after the booting message on bootloader and after 5mn its overheating. Tried another custom rom but it did the same... Any help of what I can do?
I can't restore by wiping its tells me no OS present
EDIT : I was finally success to be able to access back to normal with the HWOTA method. I was able to access to my sd card by a HUAWEI p8 lite 2017, i copied files onto instead of place them on the computer, it works i installed first the B130 update but the back buttons weren't working, finally did again the process with the B120 and it fixes all my troubles. Don't forget to format data one time to not be in my situation of encryption of system storage without a first official update (i have read that if you update your phone the encryption will be disabled because it's by default enabled.
Thanks to all this community because i found the solution here on the Rebrand Honor 9 Thread. Even if i had no answer here, i had to thanks all devs here who make a lot of hard work
You can now close this topic, I can't find where to close it by myself.
Hi,
My phone is rooted with TWRP (notch friendly version) and running magisk (both preserve tick boxes are unchecked)
When I go in to TWRP, - It wants the password to mount (which i dont have); if I bypass this, I cant flash a ZIP because I cant find it due to the data partition being encrypted (i.e jumbled foldernames)
For this reason I cant find my TWRP restore file to restore to a previous version
When I try to TWRP backup it cant mount system or data
No sure what to do next.... is magisk doing this? should I uninstall it?.. Im sure it wasnt always encrpyted as I managed to make 1 backup in TWRP
The main issue is, during the night the phone reboots to recovery (no idea why - i guess its trying to flash an update) and then hangs on the "password to mount" screen.. causing my alarms not to go off in the morning
Matt
Any ideas how to decrypt data partition? I'm a bit stuck for what to do.. I'm thinking about downloading/installing through erecovery.. But could be risky.
Sent from my ANE-LX2 using Tapatalk
I got my F1 this morning and followed everything in the pixel edition guide. After first booting my phone I saw that I lost access to my PC connection (thought the drivers went bad but that wasn't the case) and my storge seem to be completely inacccessable from TWRP (but SD card was recognized). On the device itself I can't access the zip files that I had on preboot or anything the camera shoots. I did flash the Disable forced encryption and the Magisk Zips so I'm not sure why my device got encrypted anyway!
Where do I go from here to get back my file access and (presumably) dycript the device? My theory is that I should place all the files I need to do a clean install on the SD and wipe everything. But I'm not sure if that'll prevent encryption because it didn't the first time. Also, I'd be thankful if you pointed me to which zip files combination is the most functional since there's just so many different versions of everything!
Try format data then mount your local storage from twrp (you should see your storage pop on Windows) put your rom inside and flash it again
Format data not in advance wipe and then flash dfe.
SamyakJ said:
Format data not in advance wipe and then flash dfe.
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Click to collapse
I've don't that, now how do I know that I got access to my files? Can't test on the what I had before since they all got wiped and The device is definitely not encrypted now but when I take photos they still don't show up anywhere. This could be a bug in the pixel camera and not file access but IDK. Is there a way to check
Abd121 said:
I've don't that, now how do I know that I got access to my files? Can't test on the what I had before since they all got wiped and The device is definitely not encrypted now but when I take photos they still don't show up anywhere. This could be a bug in the pixel camera and not file access but IDK. Is there a way to check
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Click to collapse
In twrp you can't see anything except zip files but I think can see in file manager of twrp(haven't tested this)
Device: SM-G532G Galaxy J2 Prime
OS: 6.0
What Happened:
I tried to root using a CF-AUTO-ROOT image and Odin and got stuck in a boot loop. Then i tried few other stock Roms (<20MB in size each of them) got it working/boot somehow. But all my user data is missing now.
Problem:
Device used to have 8GB Rom with around 2.5-3.0GB free space before this. But now it shows only 1.44GB when i check storage on PC. and shows 7.84GB as system/user data in system storage menu.
Desired Solution:
I need to access my previous user data (specially SMS). That's all.
(So factory reset and wiping which are the common fixes for this are out. )
What I have tried so far
1. TWRP - installed TWRP and tried rooting. (cannot view the zip file as it shows cannot mount /data error in log)
2. Trying with ADB to view (at least) the user data but had no luck. (may be i might be missing some step and ROOT of course)
is this something like i have manged install 2 OSs on the phone somehow (like dual boot without the correct bootloader) or some thing else?
Any help/guide is much appreciated. Thanks.