Database Users

TWRP unable to mount data partition

Just tried taking a full backup in twrp but I got a message telling me that it failed as it was unable to mount data.
I get that this is due to the internal storage being encrypted.
During root, I didn't install dm-verity and force encryption disabler. If I flash the encryption disabler now, would that overcome the problem?
I've read advice that suggests wiping internal storage in twrp is the only way around it..
Thanks for any help.

Nope you need to format the data partition to make it accessible in twrp. NOTE: WIPING DATA WILL ERASE ALL YOUR APPS. Make a backup using titanium. Also copy all your files from internal storage. There is no other way around this :/ You will still have to flash the dm verity decrypter

BD_Man said:
Nope you need to format the data partition to make it accessible in twrp. NOTE: WIPING DATA WILL ERASE ALL YOUR APPS. Make a backup using titanium. Also copy all your files from internal storage. There is no other way around this :/ You will still have to flash the dm verity decrypter
Click to expand...
Click to collapse
Thank you for the reply.
I've just taken a full backup of apps and data with TiBu so that is sorted.
How should I proceed now? Twrp, wipe -> factory reset/advanced wipe/format and which options should I select in sub-menus please?
And then flash the dm verity decrypter after that.

Make sure to make a flashable zip file from the TiBu so you can restore those from recovery. First step is to go to the wipe menu and format data. Next swipe to factory reset. Then you can reboot to system to set everything up or install a custom rom if you wish (Make a backup of everything just to be on the safe side). Root if you want to and thats all
---------- Post added at 01:24 PM ---------- Previous post was at 01:21 PM ----------
And I forgot this: Welcome the the S7 Edge community ?

Samsung galaxy tab a 10.1 cant mount data

Had this fixed on my first one . Had to return it and I cant find how i fixed it. Rooted. TWRP gives error message cant mount data. I cant backup or restore. Can someone point me to the fix, please?

Please note any instructions contained within this post are to be followed AT YOUR OWN RISK. I am not responsible for data loss, device failure, or any other form of damages resultant from the below post.
Final Edit: Method below tested and working on my SM-T580. Please read entire post before making any device modifications.
The reason you cannot mount /data is because TWRP does not support Samsung encryption, and your /data partition is encrypted by default. To fix this, you must disable encryption and FORMAT (not just wipe) your /data partition. You will lose all data on your device by doing this.
To disable encryption you must flash this ZIP file by ashyx via TWRP. I will update this post momentarily with the link.
Edit: Procedure that worked for me is as follows: [YOU MUST HAVE A ROM FILE TO REINSTALL]
-oem unlock and flash twrp
-format data
-wipe cache, dalvik, system, and data
-back out to main menu and reboot recovery
-flash your rom of choice back onto the device, I personally am using Fenix v2 found on XDA
-flash ashyx zip *not sure if this is actually necessary but it couldnt hurt, I flashed this file at this time
-reboot system
-then reboot to recovery to flash xposed, sd patch, etc
-you will see that twrp successfully mounts /data
Good luck!

REtails said:
Please note any instructions contained within this post are to be followed AT YOUR OWN RISK. I am not responsible for data loss, device failure, or any other form of damages resultant from the below post.
The reason you cannot mount /data is because TWRP does not support Samsung encryption, and your /data partition is encrypted by default. To fix this, you must disable encryption and then FORMAT (not wipe) your /data partition. You will lose all data on your device by doing this.
To disable encryption you must flash this ZIP file by ashyx via TWRP. I will update this post momentarily with the link.
Edit: There you go, so to recap: backup important data, reboot to recovery, flash zip, reboot to recovery, format data, reboot to system.
Click to expand...
Click to collapse
NO joy. See my post in stock ROM above (below now I guess...)

tennessee_titan said:
NO joy. See my post in stock ROM above (below now I guess...)
Click to expand...
Click to collapse
What? Not sure what you meant but it seems there is more to it than this. For some reason my device is forcing encryption across all sorts of wipes and such so I am currently trying to figure this out as well, will update if/when I figure it out
Edit: got it, updating post and sending you a PM

Stuck on 'To start android, enter your password'

I have the latest twrp, formated data and everything, still appears,
the only rom that succeeds in installing without that appearing is pure nexus
tried supersu, magisk, no-verity-opt-encrypt patch

Gaby_64 said:
I have the latest twrp, formated data and everything, still appears,
the only rom that succeeds in installing without that appearing is pure nexus
tried supersu, magisk, no-verity-opt-encrypt patch
Click to expand...
Click to collapse
Does TWRP print anything about "successfully decrypting /data with default password" in the console when it starts?
Go WIPE > ADVANCED WIPE > check the box next to "Data" > REPAIR OR CHANGE FILE SYSTEM. What does it say the file system of /data is?
Edit: Did you format /data before or after the issue happened? Never mind, you have to have formated /data afterwords if you were trying different ROMs.

ext4
i dont see the console

Gaby_64 said:
ext4
i dont see the console
Click to expand...
Click to collapse
Im having the same problem when i try install RR. It keeps saying "To Start Android, enter your password". im on twrp 3.0.4-1 . Anybody know whats wrong?
EDIT: Nevermind, ext4 data was f2fs for some reason

troy5890 said:
Im having the same problem when i try install RR. It keeps saying "To Start Android, enter your password". im on twrp 3.0.4-1 . Anybody know whats wrong?
EDIT: Nevermind, ext4 data was f2fs for some reason
Click to expand...
Click to collapse
i tried as both f2fs(performance is worth it) and ext4

Gaby_64 said:
ext4
i dont see the console
Click to expand...
Click to collapse
Hit the menu button (on the nav bar) after TWRP boots.
I dunno man. I've had this happen to me twice and the same thing worked for me both times:
* TWRP reports /data as ext4 (expected because that's what I use)
format /data (returns error 255 and various other errors)
reboot TWRP
* TWRP reports /data as f2fs
change /data back to f2fs
Worst case scenario, I think an EDL flash that wipes /data would fix it.
When you say format data do you mean using the "format data" option in the wipe menu (as opposed to a regular wipe)?
---------- Post added at 10:34 PM ---------- Previous post was at 09:42 PM ----------
Now that I think about it there might not be anything wrong with your data partition. You might have changed ROMs without removing your PIN first.
Use TWRP's file manager to delete the following files:
/data/system/gatekeeper.password.key
/data/system/gatekeeper.patern.key
/data/system/locksettings.db
/data/system/locksettings.db-shm
/data/system/locksettings.db-wal
You should boot into Android and unlock without a PIN. If it does ask try the last PIN you used.

Doc Ames said:
Hit the menu button (on the nav bar) after TWRP boots.
I dunno man. I've had this happen to me twice and the same thing worked for me both times:
* TWRP reports /data as ext4 (expected because that's what I use)
format /data (returns error 255 and various other errors)
reboot TWRP
* TWRP reports /data as f2fs
change /data back to f2fs
Worst case scenario, I think an EDL flash that wipes /data would fix it.
When you say format data do you mean using the "format data" option in the wipe menu (as opposed to a regular wipe)?
---------- Post added at 10:34 PM ---------- Previous post was at 09:42 PM ----------
Now that I think about it there might not be anything wrong with your data partition. You might have changed ROMs without removing your PIN first.
Use TWRP's file manager to delete the following files:
/data/system/gatekeeper.password.key
/data/system/gatekeeper.patern.key
/data/system/locksettings.db
/data/system/locksettings.db-shm
/data/system/locksettings.db-wal
You should boot into Android and unlock without a PIN. If it does ask try the last PIN you used.
Click to expand...
Click to collapse
I noticed on twrp 3.0.4-1, when i format data, the file system turns i to f2fs and i have to keep turning it back to ext4. ive been trying to go back to stock, but when i do, i check the status bar to see if everything is alright because i normally see old setting from a custom rom on there. this indicates that my data was not wiped properly. i was wondering if anyone has been having this issue?

troy5890 said:
I noticed on twrp 3.0.4-1, when i format data, the file system turns i to f2fs and i have to keep turning it back to ext4. ive been trying to go back to stock, but when i do, i check the status bar to see if everything is alright because i normally see old setting from a custom rom on there. this indicates that my data was not wiped properly. i was wondering if anyone has been having this issue?
Click to expand...
Click to collapse
May I ask, why are you using that version of TWRP?

Choose an username... said:
May I ask, why are you using that version of TWRP?
Click to expand...
Click to collapse
It's the only version that will boot up successfully when flashed through fastboot.
Sent from my ZTE A2017U using XDA-Developers Legacy app

troy5890 said:
It's the only version that will boot up successfully when flashed through fastboot.
Click to expand...
Click to collapse
but can't you download the 3.1 img and flash it on twrp itself with the flash image option?

Choose an username... said:
but can't you download the 3.1 img and flash it on twrp itself with the flash image option?
Click to expand...
Click to collapse
I tried but it ended up not flashing successfully
Sent from my ZTE A2017U using XDA-Developers Legacy app

troy5890 said:
I tried but it ended up not flashing successfully
Click to expand...
Click to collapse
all hail axon7tool then :v

Choose an username... said:
all hail axon7tool then :v
Click to expand...
Click to collapse
Looks like I'll give that a try, thank you
Sent from my ZTE A2017U using XDA-Developers Legacy app

Root for 8.0 Oreo

Hello,
I have tried to root multiple times but everytime I flash TWRP and format Data and then restart the data partition keeps getting encrypted again, I am using the official 8.0 Oreo UK version which recently got released, I have tried installing Magisk and Xposed both are installed successfully but with error that /data is not mounted and like I said if I format data to decrypt it and then restart it automatically encrypts it. I also tried flashing Samsung anti root and no opt zips but it also didn't help.

It was released a few days ago, just go with custom or wait for working solution

1 workaround for now :
flash rom via odin /
flash twrp via odin /
flash no_encrypt 6.0, full wipe, reboot to recovery /
flash MoroKernel 1.5 (magisk already included) /
reboot and have fun with no encryptation anymore

No-verity didn't work for me but remove encryption.zip did.

this didn't work for me, it resulted in a bootloop
ric69 said:
1 workaround for now :
flash rom via odin /
flash twrp via odin /
flash no_encrypt 6.0, full wipe, reboot to recovery /
flash MoroKernel 1.5 (magisk already included) /
reboot and have fun with no encryptation anymore
Click to expand...
Click to collapse

fre78 said:
this didn't work for me, it resulted in a bootloop
Click to expand...
Click to collapse
Sorry for you. check Mount system or data or enable MTP. Internal storage was probably still at 0
I rebooted more than 10times it's ok here

zainbfaisal said:
Hello,
I have tried to root multiple times but everytime I flash TWRP and format Data and then restart the data partition keeps getting encrypted again, I am using the official 8.0 Oreo UK version which recently got released, I have tried installing Magisk and Xposed both are installed successfully but with error that /data is not mounted and like I said if I format data to decrypt it and then restart it automatically encrypts it. I also tried flashing Samsung anti root and no opt zips but it also didn't help.
Click to expand...
Click to collapse
sir may i ask how come ur able to have twrp .
how dd u install twrp on android 8.0 UK firmware?
thanks for help

What I did :
1. Install official room through Odin
2. Do not reboot!!!!
3. Install TWRP through Odin
4. Install Magisk
5. Install Encryption Disabler
It worked for me

OREO stock keeps encrypting DATA partition
NewbieFTW said:
What I did :
1. Install official room through Odin
2. Do not reboot!!!!
3. Install TWRP through Odin
4. Install Magisk
5. Install Encryption Disabler
It worked for me
Click to expand...
Click to collapse
Hi NewbieFTW,
I've followed the steps you've described. (in step 3, I also did format the DATA partition because it was encrypted)
The result is that I'm on stock OREO and I can boot in TWRP.
But whatever I try, after booting OREO the first time, my DATA partition is encrypted again.
So, I have a TWRP as recovery, but only in READ ONLY mode, because it cannot mount an encrypted DATA partition.
This way, I cannot backup or restore my DATA partition.
Can you confirm that your TWRP is not READ ONLY?
And what encryption disabler did you use? (I used no-verity-opt-encrypt-6.0.zip)

fre78 said:
Hi NewbieFTW,
I've followed the steps you've described. (in step 3, I also did format the DATA partition because it was encrypted)
The result is that I'm on stock OREO and I can boot in TWRP.
But whatever I try, after booting OREO the first time, my DATA partition is encrypted again.
So, I have a TWRP as recovery, but only in READ ONLY mode, because it cannot mount an encrypted DATA partition.
This way, I cannot backup or restore my DATA partition.
Can you confirm that your TWRP is not READ ONLY?
And what encryption disabler did you use? (I used no-verity-opt-encrypt-6.0.zip)
Click to expand...
Click to collapse
Yes, I can confirm that I can do whatever I want on TWRP.
I used a .zip found somewhere on a 8.0 thread. I feel like the no-verity zip doesn't work on some devices as it didn't on mine.
Let me grab the link for you : https://drive.google.com/file/d/1tCLamw9j07bhRgEd6qhymqUxExazy04c/view?usp=sharing
Here you go, try this. It should work now. Try doing the exact same steps as you did before but with this zip instead of no-verity.
Good luck mate

NewbieFTW said:
Yes, I can confirm that I can do whatever I want on TWRP.
I used a .zip found somewhere on a 8.0 thread. I feel like the no-verity zip doesn't work on some devices as it didn't on mine.
Let me grab the link for you : https://drive.google.com/file/d/1tCLamw9j07bhRgEd6qhymqUxExazy04c/view?usp=sharing
Here you go, try this. It should work now. Try doing the exact same steps as you did before but with this zip instead of no-verity.
Good luck mate
Click to expand...
Click to collapse
Can anyone confirm that magisk should be installed in twrp before encryption disabler?

skydivider said:
Can anyone confirm that magisk should be installed in twrp before encryption disabler?
Click to expand...
Click to collapse
Magisk removes the encryption disabler .zip for some reason.

Sounds good dosen´t work.
When you flash Magisk it flashes its own boot or system img and remove encrypt flashes its own, if you flash the magisk itll flash the img but if you then flash encryption disabler it will overwrite the magisk img and magisk will uninstall or if you flash the encrypt and then magisk then you will have magisk but encryption will be enabled.
NewbieFTW said:
What I did :
1. Install official room through Odin
2. Do not reboot!!!!
3. Install TWRP through Odin
4. Install Magisk
5. Install Encryption Disabler
It worked for me
Click to expand...
Click to collapse

zainbfaisal said:
Sounds good dosen´t work.
When you flash Magisk it flashes its own boot or system img and remove encrypt flashes its own, if you flash the magisk itll flash the img but if you then flash encryption disabler it will overwrite the magisk img and magisk will uninstall or if you flash the encrypt and then magisk then you will have magisk but encryption will be enabled.
Click to expand...
Click to collapse
I'm sorry then, I don't know what to say. It worked for me.

I needed reinstal magisk after boot for root, but worked for me...

fre78 said:
Hi NewbieFTW,
I've followed the steps you've described. (in step 3, I also did format the DATA partition because it was encrypted)
The result is that I'm on stock OREO and I can boot in TWRP.
But whatever I try, after booting OREO the first time, my DATA partition is encrypted again.
So, I have a TWRP as recovery, but only in READ ONLY mode, because it cannot mount an encrypted DATA partition.
This way, I cannot backup or restore my DATA partition.
Can you confirm that your TWRP is not READ ONLY?
And what encryption disabler did you use? (I used no-verity-opt-encrypt-6.0.zip)
Click to expand...
Click to collapse
When this happend to me, i hit format data and typed yes, when i mount on TWRP i can see my storage again

I can root with patched boot image, but Samsung Healt and Samsung Pay don't works. Anyone?

miguelan.ruiz said:
I can root with patched boot image, but Samsung Healt and Samsung Pay don't works. Anyone?
Click to expand...
Click to collapse
Samsung Pay will, at the moment, probably never work again because it trips Knox.
For Samsung Health the fix is still the same: install a build.prop editor and change the value of RO.Config.Tima from 1 to 0.

not for me
NewbieFTW said:
What I did :
1. Install official room through Odin
2. Do not reboot!!!!
3. Install TWRP through Odin
4. Install Magisk
5. Install Encryption Disabler
It worked for me
Click to expand...
Click to collapse
doesn't work for me

Apparently there are 2 kind of users here.
One part did manage to install stock Oreo (BTU? other CSC?) , with root (magisk? superSu?) and a working TWRP (3.2.1?) which is not read-only on our beloved S7 Edge (SM-G935F)
The other part did not manage to setup this particular config.
It would be nice to have a detailed step-by-step guide from scratch by someone who managed to do it, so we can reproduce it.

Can't create a backup through TWRP.

I tried creating a system backup through TWRP just now for the first time ever. Throughout the process, it gave me multiple messages saying "unable to mount data" and the same for some other folders, and when the backup supposedly finished, it just said failed.
Is there anything I can try without actually wiping either of the partitions? This obviously because I'm trying to create a backup so I can wipe afterwards.

cyborgium said:
I tried creating a system backup through TWRP just now for the first time ever. Throughout the process, it gave me multiple messages saying "unable to mount data" and the same for some other folders, and when the backup supposedly finished, it just said failed.
Is there anything I can try without actually wiping either of the partitions? This obviously because I'm trying to create a backup so I can wipe afterwards.
Click to expand...
Click to collapse
In twrp main menu screen select ' Mount ' menu and make sure mount data is ticked then go back and try backing up again.

spawnlives said:
In twrp main menu screen select ' Mount ' menu and make sure mount data is ticked then go back and try backing up again.
Click to expand...
Click to collapse
Thanks for your reply, it doesn't actually let me tick that box. Nothing happens when I tick it. It also says that the data partition is 0mb. Any idea what that might mean?

cyborgium said:
Thanks for your reply, it doesn't actually let me tick that box. Nothing happens when I tick it. It also says that the data partition is 0mb. Any idea what that might mean?
Click to expand...
Click to collapse
Which version of twrp are you using
Latest is 3.2.3.0 which should fix the data issue ( it"s a known issue).

spawnlives said:
Which version of twrp are you using
Latest is 3.2.3.0 which should fix the data issue ( it"s a known issue).
Click to expand...
Click to collapse
That's the TWRP version that I've got installed.
I just reinstalled both stock firmware and reflashed TWRP but the exact same issue persists. At first I was able to mount data though, I could flash zips such as Magisk etc. But after having set everything up again on my phone, I couldn't mount data anymore.

cyborgium said:
That's the TWRP version that I've got installed.
I just reinstalled both stock firmware and reflashed TWRP but the exact same issue persists. At first I was able to mount data though, I could flash zips such as Magisk etc. But after having set everything up again on my phone, I couldn't mount data anymore.
Click to expand...
Click to collapse
Not sure on your steps to install twrp
Have you tried going into twrp in wipe menu and format data

spawnlives said:
Not sure on your steps to install twrp
Have you tried going into twrp in wipe menu and format data
Click to expand...
Click to collapse
Maybe I wasn't very clear.
I flash the stock firmware, set that up to enable OEM unlock. Then flash TWRP, wipe /data, flash magisk and other required zips (at this point, data is mounted). I then set that all up however I want, install apps etc.
If I want to create a backup after all that, it doesn't work cause of the unable to mount /data and /storage.

cyborgium said:
Maybe I wasn't very clear.
I flash the stock firmware, set that up to enable OEM unlock. Then flash TWRP, wipe /data, flash magisk and other required zips (at this point, data is mounted). I then set that all up however I want, install apps etc.
If I want to create a backup after all that, it doesn't work cause of the unable to mount /data and /storage.
Click to expand...
Click to collapse
Sounds like your device is still encrypted
Did you flash the no Verity encrypt zip file
Also I said to format data not wipe.
In the mount menu these are the options I have enabled.

spawnlives said:
Sounds like your device is still encrypted
Did you flash the no Verity encrypt zip file
Also I said to format data not wipe.
In the mount menu these are the options I have enabled.
Click to expand...
Click to collapse
You're right, I formatted data, not wipe.
I did flash the no verity zip, does the order in which I flash Magisk, no-verity and RMM state unlock matter?

cyborgium said:
You're right, I formatted data, not wipe.
I did flash the no verity zip, does the order in which I flash Magisk, no-verity and RMM state unlock matter?
Click to expand...
Click to collapse
The instructions I followed to install twrp
Flash twrp (which you have done)
Format data
When finished reboot back into twrp(use twrp reboot menu option)
Flash no-verity zip via twrp ( have to make sure you have it on internal storage or SD card)
Then flash everything else
Not sure if you need RMM state unlock if your bootloader(OEM) is already unlocked in developer options though.

spawnlives said:
The instructions I followed to install twrp
Flash twrp (which you have done)
Format data
When finished reboot back into twrp(use twrp reboot menu option)
Flash no-verity zip via twrp ( have to make sure you have it on internal storage or SD card)
Then flash everything else
Not sure if you need RMM state unlock if your bootloader(OEM) is already unlocked in developer options though.
Click to expand...
Click to collapse
I've just done everything you stated above, still the same issue, can't mount /data.
Really don't understand what it is that im doing wrong or if I'm even doing anything wrong..
Thanks for your help anyway though, appreciate it.

cyborgium said:
I've just done everything you stated above, still the same issue, can't mount /data.
Really don't understand what it is that im doing wrong or if I'm even doing anything wrong..
Thanks for your help anyway though, appreciate it.
Click to expand...
Click to collapse
Just as matter of curiosity I use FX file explorer (root) in the menu filesystem it should tell you what format your data partition is mine or ext4. I have read that some people through twrp have changed it to something like ext3 and then back to ext4
Also this is the thread I used to install my twrp
https://forum.xda-developers.com/ga...pment/recovery-twrp-galaxy-s8-exynos-t3595102
This thread may also help you out
https://forum.xda-developers.com/ga...ment/fix-data-mount-fix-s8-twrp-oreo-t3769254

spawnlives said:
Just as matter of curiosity I use FX file explorer (root) in the menu filesystem it should tell you what format your data partition is mine or ext4. I have read that some people through twrp have changed it to something like ext3 and then back to ext4
Also this is the thread I used to install my twrp
https://forum.xda-developers.com/ga...pment/recovery-twrp-galaxy-s8-exynos-t3595102
This thread may also help you out
https://forum.xda-developers.com/ga...ment/fix-data-mount-fix-s8-twrp-oreo-t3769254
Click to expand...
Click to collapse
I think that second thread you linked may have done the trick.
At first it didn't seem to help, but when I tried it again after reflashing everything, I am now able to mount /data.
I'm still in the dark as to why this happened and hasn't happened to anyone else other than the person who created that file, but either way, thank you very much for your help.

cyborgium said:
Maybe I wasn't very clear.
I flash the stock firmware, set that up to enable OEM unlock. Then flash TWRP, wipe /data, flash magisk and other required zips (at this point, data is mounted). I then set that all up however I want, install apps etc.
If I want to create a backup after all that, it doesn't work cause of the unable to mount /data and /storage.
Click to expand...
Click to collapse
Try the modded twrp from nx thread