Database Develop

[Q] How to wipe Data partition after it's been encrypted?

Hey guys,
My work switched to Google Apps for their email so i wanted to test it out on my phone. Doing so required them to encrypt my phone. What this appears to have done is encrypt the data partition. So now when i go into (TWRP) recovery and try to do a backup / wipe / or anything else, it says it is "Unable to mount /sdcard" I'm unable to do a factory reset of any kind so i'm essentially stuck on this rom (ARHD) until i can figure out how to wipe data and get the /sdcard to be not encrypted. Does anyone have any ideas? I'm imagining that with the modified recovery not being able to access the data partition that i'm going to have to do some adb type stuff?
Please help! I want to keep flashing new roms!

Anyone??

I think you can't decrypt your data partition...
Did you try to wipe your data partition with the latest TWRP?

Guich said:
I think you can't decrypt your data partition...
Did you try to wipe your data partition with the latest TWRP?
Click to expand...
Click to collapse
That's the thing, the recovery can't mount /sdcard so wiping isn't an option from recovery

jrun said:
That's the thing, the recovery can't mount /sdcard so wiping isn't an option from recovery
Click to expand...
Click to collapse
Hi! Only TWRP recovery can solve your issue just do this...
Boot to TWRP recovery->Wipe
From there there are 2 options the left is the advance wipe and on the right is Format Data
Just select the format data button and it should reformat the whole data partition.
1st one would prompt so many errors and reformat then reformat it again 1 time and it should fully reformat your phone.
In theory it should reformat data partition even when encrypted but just in case it fails and I won't be able to go back to this thread just boot in bootloader and type
"fastboot erase userdata"

Well none of that works. TWRP doesn't support decryption yet for this device.

sevenalive said:
Well none of that works. TWRP doesn't support decryption yet for this device.
Click to expand...
Click to collapse
What I instructed basically doesn't decrypt the partition. It reformats it.

Riyal said:
What I instructed basically doesn't decrypt the partition. It reformats it.
Click to expand...
Click to collapse
I know what you instructed, it doesn't work. Only way I got it to work. Flash the stock recovery. Boot into system. Take off the encryption, phone reboots and removes the encryption, data is formatted. Then flash TWRP again.

I basically ran into this exact problem. I was hoping that I'd still be able to back up the encrypted device, but forget about it. What a pain in the ass.
Someone should make add something to the guides about how encrypting your device makes nandroid backups impossible.

USERDATA erase...

Long story short... My USB port is dead on my Nexus 6. I flash everything in TWRP such as roms, kernels and modems (YAY for the ability to do so). I am wanting to wipe everything in my phone to start fresh. Let's say I did a factory reset to the phone (wiped everything except userdata), got my rom to boot and then went into recovery to wipe my userdata partition only, would my phone go ahead and rebuild the partition on successful boot?
Thank you in advance!

thawte said:
...Let's say I did a factory reset to the phone (wiped everything except userdata), got my rom to boot and then went into recovery to wipe my userdata....
Click to expand...
Click to collapse
Wiping a partition in twrp will show a.o. the message 'formatting...'. The partition is already build but empty.

NLBeev said:
Wiping a partition in twrp will show a.o. the message 'formatting...'. The partition is already build but empty.
Click to expand...
Click to collapse
Ah gotcha. Also the rom will still boot with empty USERDATA? Just making sure it does not have important files for boot...

thawte said:
Ah gotcha. Also the rom will still boot with empty USERDATA? Just making sure it does not have important files for boot...
Click to expand...
Click to collapse
Wiping data in recovery shouldn't affect the system or booting.
But, personally, I'd take a full nandroid backup before anything. If you can't plug in to a pc and use fastboot to fix anything serious, you should be playing it very safe. :good:

Darth said:
Wiping data in recovery shouldn't affect the system or booting.
But, personally, I'd take a full nandroid backup before anything. If you can't plug in to a pc and use fastboot to fix anything serious, you should be playing it very safe. :good:
Click to expand...
Click to collapse
Doesn't the nandroid backup store to userdata?
Sent from my Nexus 6 using Tapatalk

thawte said:
Doesn't the nandroid backup store to userdata?
Sent from my Nexus 6 using Tapatalk
Click to expand...
Click to collapse
Data in recovery and userdata aren't the same. There's no "userdata" in twrp. (unless the newest twrp has changed?)
Userdata is apps, data and internal SD storage. You use fastboot typically to erase userdata.
You use twrp to erase data, and internal storage, separately.
Edit: and yes, it does store to userdata. But you can't erase userdata without a PC. Just erase data in twrp, and leave internal storage alone.
Or wipe it all, but without access to a PC, you could not fix the phone if anything goes wrong. That's why I'd keep a full nandroid backup on the device.

Xiaomi Mi A2 (jasmine) can I update stock ROM via TWRP

Good Morning, I want to upgrade brother device to new version of android (because he can`t install security updates for unknow reasons), but I affraid that he loose all apps and settings (he is a firefighter and have app from firefighter station which signals dangerous traffic etc.) So my question is can I update downloaded stock ROM via TWRP (adb sideload) without fears that he loose everything?

iHusky said:
Good Morning, I want to upgrade brother device to new version of android (because he can`t install security updates for unknow reasons), but I affraid that he loose all apps and settings (he is a firefighter and have app from firefighter station which signals dangerous traffic etc.) So my question is can I update downloaded stock ROM via TWRP (adb sideload) without fears that he loose everything?
Click to expand...
Click to collapse
The only thing that will take your fear, is a backup of all important partitions (boot, system, data, vendor, efs, persist), stored externally, plus a copy of the internal storage content, also stored externally.
With that you should be able to restore everything to the exact point it is at right now, so you'll really need to mess up hard to not come out of basically any situation with those partitions saved.
As for your inital question:
Why don't you just update via ota if you wanna stay on stock?

Phil_Smith said:
The only thing that will take your fear, is a backup of all important partitions (boot, system, data, vendor, efs, persist), stored externally, plus a copy of the internal storage content, also stored externally.
With that you should be able to restore everything to the exact point it is at right now, so you'll really need to mess up hard to not come out of basically any situation with those partitions saved.
As for your inital question:
Why don't you just update via ota if you wanna stay on stock?
Click to expand...
Click to collapse
Because, brother have error, while try install security updates, but he have from March this year
And this is not possible to make update, because after click backup (Data partition) I get error "cannot create data/media/0/TWRP

iHusky said:
Because, brother have error, while try install security updates, but he have from March this year
And this is not possible to make update, because after click backup (Data partition) I get error "cannot create data/media/0/TWRP
Click to expand...
Click to collapse
Okay, so maybe first copying internal storage content to your PC and backup important apps would be sufficient then.
For apps you can use Titanium Backup (good, but makes troubles on android 10 at the moment), Swift Backup (recommend by many others) and more.
These backup solutions save apps and app data on your phone, so copy that to an external place, or you might lose them if you need to format data (which I'll suggest).
After your "backups" are made, I would wipe every partition in each slot, which you can also achieve with a "fastboot -w", and then also format data - the one where you need to type "yes" (which will also erase all internal storage content, but most probably will also solve your troubles).
From here there are tools like miflash or fastboot images to reflash stock (inform yourself about them, before you start all that!).
Be sure to flash the latest one right away, so you won't be in the need of "dirty" updates immediately again.
Afterwards, you can copy back the internal storage content and the folder of the backup app, and restore the previously saved apps.

Phil_Smith said:
Okay, so maybe first copying internal storage content to your PC and backup important apps would be sufficient then.
For apps you can use Titanium Backup (good, but makes troubles on android 10 at the moment), Swift Backup (recommend by many others) and more.
These backup solutions save apps and app data on your phone, so copy that to an external place, or you might lose them if you need to format data (which I'll suggest).
After your "backups" are made, I would wipe every partition in each slot, which you can also achieve with a "fastboot -w", and then also format data - the one where you need to type "yes" (which will also erase all internal storage content, but most probably will also solve your troubles).
From here there are tools like miflash or fastboot images to reflash stock (inform yourself about them, before you start all that!).
Be sure to flash the latest one right away, so you won't be in the need of "dirty" updates immediately again.
Afterwards, you can copy back the internal storage content and the folder of the backup app, and restore the previously saved apps.
Click to expand...
Click to collapse
I tried MiFlash, but without wipe anything, and it don`t upgrade version of system
But if I must, flash 2 slots A/B using MiFlash or one slot (A) is for system?

You can just download the zip file with version u want from the site below and flash it via TWRP making cache and dalvik cache wipes and changing slots at the end.
https://mifirm.net/model/jasmine.ttt#zip-mif

pfss said:
You can just download the zip file with version u want from the site below and flash it via TWRP making cache and dalvik cache wipes and changing slots at the end.
https://mifirm.net/model/jasmine.ttt#zip-mif
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Click to collapse
So, I don't need
to flash second slot?

iHusky said:
So, I don't need
to flash second slot?
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Click to collapse
Just if u want. It's not necessary.
In october I updated mine this way but forgot to change the slot before rebooting to the system and realized that was in the old Android version. I just went to TWRP again and changed slot. After rebooting, the phone was in the updated Android One.

pfss said:
Just if u want. It's not necessary.
In october I updated mine this way but forgot to change the slot before rebooting to the system and realized that was in the old Android version. I just went to TWRP again and changed slot. After rebooting, the phone was in the updated Android One.
Click to expand...
Click to collapse
I tried using fastboot and MiFlash but after all it stuck on bootloader

iHusky said:
I tried using fastboot and MiFlash but after all it stuck on bootloader
Click to expand...
Click to collapse
I just updated mine to November patch downloaded from here: https://mifirm.net/downloadzip/4197
I entered fastboot mode, executed
Code:
fastboot boot my_twrp_image_file.img
In TWRP made de wipes, flashed the ROM, changed slot and rebooted phone. It looks like it's normal.

Question TWRP and MIUI V13.0.12

I just did a full flash and erase with sweet_global_images_V13.0.12.0.SKFMIXM_20220801.0000.00_12.0_global ROM.
after a quick rom setup with no sim and no wifi, I went back to TWRP and the data partition can't be mounted.
I tried then the usual advanced wipe, setting the partition to ext2 then to ext4 and the rom does not boot and goes back to recovery.
If from recovery I do a wipe, then the rom starts, but after setup, going back to TWRP gives agaion the same problem and the data partition can't be mounted.
Any Idea?

which TWRP version you use?

Zibri said:
....Any Idea?
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Click to collapse
Have you format data partition before starting the new rom?
Format is neccesary to remove the encryption of the formal rom.
Wipe data isn't enough for that.

yes I did... but I think MIUI reformats it.

which twrp are you using?
Maybe the twrp you're using doesn't support encryption yet

it worked with MIUI 12.5.9.. but MIUI 13.0.12 reformats the userdata partition if it is formatted with twrp.
maybe because of dm-verity but I am not sure.

I just did this:
FULL FLASH from EDL or FASTBOOT without relock and including userdata.
Then fastboot boot twrp-3.6.2_11-0-sweet.img
Form TWRP I reformatted userdata as EXT4.
Then booted the system... after booting for the first time the system, userdasta is again encrypted.

Yes, seems u are using twrp which not support decryption yet, change ur twrp/ofox then (there is 1 that already support android 13)

twrp 0 mb

hello.my phone is n950F i have problem. my problem is
when i flash stock rom w/odin
then set up twrp this app cant see my internal storage without apply format data or tap change file system ex4 exfat etc.
but i choose format data or repair file system button, mine system is formatting. so i must have flash stock rom odin again.
if i flash stock rom again, twrp cant see my interal storage, 0mb error. again again again. how i flash kernel in twrp on stock rom?

n0te8user said:
hello.my phone is n950F i have problem. my problem is
when i flash stock rom w/odin
then set up twrp this app cant see my internal storage without apply format data or tap change file system ex4 exfat etc.
but i choose format data or repair file system button, mine system is formatting. so i must have flash stock rom odin again.
if i flash stock rom again, twrp cant see my interal storage, 0mb error. again again again. how i flash kernel in twrp on stock rom?
Click to expand...
Click to collapse
If you are using twrp from this thread, it's mentioned on the 3rd post
corsicanu said:
FAQ / Further reading
Q: TWRP can't mount data partition, what to do?
A: Make sure you formatted data partition.
Q: Why do i need to format data partition?
A: Because old rom encrypted your data partition and new rom can't decrypt and use that content / root needs access to data partition to place misc files / phone not booting after flashing root until data partition gets formatted.
Click to expand...
Click to collapse
or maybe try to disable data encryption which is mentioned on the 1st post
corsicanu said:
After booting in TWRP download and flash no-verity-opt-encrypt-6.1 zip to disable data partition encryption
If for any reason you fail to install TWRP multiple times/different methods, make sure you check this thread
Click to expand...
Click to collapse

You need to format /data with the "yes" confirmation.
The stock ROM will survive, because it's on /system and /preload.
After that you need to flash a fully patched kernel with removed forced encryption (like a2n kernel) before you reboot to the system. Otherwise the stock kernel will encrypt the /data partition once again.

ace2nutzer said:
You need to format /data with the "yes" confirmation.
The stock ROM will survive, because it's on /system and /preload.
After that you need to flash a fully patched kernel with removed forced encryption (like a2n kernel) before you reboot to the system. Otherwise the stock kernel will encrypt the /data partition once again.
Click to expand...
Click to collapse
i know i tried this but mine stock rom installed after flashing with odin (turkey) and after apply twrp format data stock rom are very different. the second i said seems like global rom. it contains weird settings and apps I will do what you say and take a screenshot,1 2 hours later you will understand me better.