Database Info

partitions seem to be locked, cant format

i had a recent soft brick in which for some reason, i couldnt decrypt, with this, i couldnt load anything on android besides twrp and fastboot.. when i try reformatting and wiping data, it seems to fail.. for example, i go to format with twrp and it hangs, if i try installing anything itll fail to load any data onto that partition.. if i could reformat that partition back to its useful state, without the encryption issue i could reinstall a rom and fix this issue
any ideas?
when i attempt to do anything in twrp.. i get this error
Updating partition details
E: error opening ' /data/media '
E: error: No such file or directory
just a test, i tried to create a new folder in /data, and it says its a read-only filesystem

jason41987 said:
i had a recent soft brick in which for some reason, i couldnt decrypt, with this, i couldnt load anything on android besides twrp and fastboot.. when i try reformatting and wiping data, it seems to fail.. for example, i go to format with twrp and it hangs, if i try installing anything itll fail to load any data onto that partition.. if i could reformat that partition back to its useful state, without the encryption issue i could reinstall a rom and fix this issue
any ideas?
when i attempt to do anything in twrp.. i get this error
Updating partition details
E: error opening ' /data/media '
E: error: No such file or directory
just a test, i tried to create a new folder in /data, and it says its a read-only filesystem
Click to expand...
Click to collapse
Your partition is probably encrypted. The only way to access to your data is to decrypt it before you can do anything. Do you have a password for it?

LetMeKnow said:
Your partition is probably encrypted. The only way to access to your data is to decrypt it before you can do anything. Do you have a password for it?
Click to expand...
Click to collapse
no, any way i can erase all the data, the partition and start fresh?

jason41987 said:
no, any way i can erase all the data, the partition and start fresh?
Click to expand...
Click to collapse
"Format data" should do this. In which way doesn't it work for you?

_that said:
"Format data" should do this. In which way doesn't it work for you?
Click to expand...
Click to collapse
when i attempt to format data, format fails, it will not let me touch the /data partition, when it does mount, it mounts as read-only.. the partition itself, possibly partition table or something is damaged because it cannot be formatted and nothing can be written to it
it would seem like the internal storage is screwed.. but the other partitions seem to work fine, even able to use command-line from twrp to check fstab and try to mount manually... im not sure how to completely delete and recreate a partition in fdisk, if possible on here

jason41987 said:
when i attempt to format data, format fails
Click to expand...
Click to collapse
No error message? No log file? Just "fails"?
You could try running "/sbin/make_ext4fs /dev/block/mmcblk0p8" manually from adb shell.
jason41987 said:
it would seem like the internal storage is screwed.. but the other partitions seem to work fine, even able to use command-line from twrp to check fstab and try to mount manually... im not sure how to completely delete and recreate a partition in fdisk, if possible on here
Click to expand...
Click to collapse
You can't use fdisk on the internal storage - it uses a combination of GPT and a proprietary partition table.

_that said:
No error message? No log file? Just "fails"?
You could try running "/sbin/make_ext4fs /dev/block/mmcblk0p8" manually from adb shell.
You can't use fdisk on the internal storage - it uses a combination of GPT and a proprietary partition table.
Click to expand...
Click to collapse
the errors i receive are above..trying different things ive received the error that the partition is write one... are there any tools for redoing the entire internal storage?

maybe this could work.. since the other partitions seem to work just fine, as they were not encrypted, what if i edited fstab to mount partitions on a MicroSD card pre-partitioned to act as /data and /cache, then install a rom... unless there are ROMs designed to utilize an external SD for installation?... either way if i can work around these two partitions i could get into a working android system where i can find more tools to assist in removing and recreating those broken partitions
ive considered trying to use fastboot to replace the twrp recovery with a stock asus recovery partition and try to fix the issue from that, but i doubt that would be of any use

jason41987 said:
ive considered trying to use fastboot to replace the twrp recovery with a stock asus recovery partition and try to fix the issue from that, but i doubt that would be of any use
Click to expand...
Click to collapse
Instead you should try it cause i'm pretty sure it will fix your partition.Just install the stock recovery and do a Wipe Data first. If all goes well you can go ahead and flash a stock rom from MicroSD or install the TWRP again and check if it's working.
Here you can find the latest stock recovery - - > http://forum.xda-developers.com/showthread.php?p=44280630

Pretoriano80 said:
Instead you should try it cause i'm pretty sure it will fix your partition.Just install the stock recovery and do a Wipe Data first. If all goes well you can go ahead and flash a stock rom from MicroSD or install the TWRP again and check if it's working.
Here you can find the latest stock recovery - - > http://forum.xda-developers.com/showthread.php?p=44280630
Click to expand...
Click to collapse
are you saying write over twrp with the stock recovery partition with fastboot, then boot into the recovery partition from the power + volume down menu and see if that recovery image will reset to factory defaults?... if so, where would i even get that recovery image?.. and if you mean just try installing a stock rom through TWRP, ive already been there, done that, and it hangs on formatting

jason41987 said:
are you saying write over twrp with the stock recovery partition with fastboot, then boot into the recovery partition from the power + volume down menu and see if that recovery image will reset to factory defaults?... if so, where would i even get that recovery image?.. and if you mean just try installing a stock rom through TWRP, ive already been there, done that, and it hangs on formatting
Click to expand...
Click to collapse
If you follow the link i posted previously you will find the stock recovery (from the latest asus firmware) as an attachment to that post.
After you flash it via Fastboot, do a Wipe Data from the bootloader menu (the one with the 3 icons) after that just follow "restore with stock recovery" procedure from my All in One Thread (it's a sticky post under General Forum).
That should fix your issue and get you to a new clean starting point.

Pretoriano80 said:
If you follow the link i posted previously you will find the stock recovery (from the latest asus firmware) as an attachment to that post.
After you flash it via Fastboot, do a Wipe Data from the bootloader menu (the one with the 3 icons) after that just follow "restore with stock recovery" procedure from my All in One Thread (it's a sticky post under General Forum).
That should fix your issue and get you to a new clean starting point.
Click to expand...
Click to collapse
well, ill try that as soon as i wake up.. if it doesnt work though i am prepared to install something thatll run those partitions of an external microsd though.. wonder why no roms exist specifically for that?... seems like an ultra-secure rom for the ultra-paranoid to be able to pop out their microsd and hide it with all user data stored on it

jason41987 said:
well, ill try that as soon as i wake up.. if it doesnt work though i am prepared to install something thatll run those partitions of an external microsd though.. wonder why no roms exist specifically for that?... seems like an ultra-secure rom for the ultra-paranoid to be able to pop out their microsd and hide it with all user data stored on it
Click to expand...
Click to collapse
Data2SD already exists.
Did you already try to format your data partition from adb shell?

data2sd seems to be something thats applied after a rom is successfully installed, not sure that would help me
anyway, i tried the stock recovery image and it just hangs on an android graphic with a rotating blue wireframe inside its chest and a blue progress bar, but it doesnt actually do anything else
edit: wait a minute.. i see how this goes with the data2sd... i download a data2sd kernal, since i install cleanrom i can add this to the installations list of kernals, the data2sd kernal will mount external SD cards as the /data, cache, and sdcard partitions, allowing me to bypass the issue im having completely and use a 64gb microsd card as my primary storage... very interesting indeed

aah, fantastic, cant even get into fastboot mode to put twrp back on for the data2sd method.. so it would seem now my tablet is COMPLETELY toast

jason41987 said:
aah, fantastic, cant even get into fastboot mode to put twrp back on
Click to expand...
Click to collapse
What happens when you try?

_that said:
What happens when you try?
Click to expand...
Click to collapse
when i hold power and volume down it goes straight to the robot with the blue spinning wireframe graphic,, i dont get an option to go to fastboot.. i can also use power and volume up to go into apx mode but no idea what thats even used for as i find very little reference to it online

jason41987 said:
when i hold power and volume down it goes straight to the robot with the blue spinning wireframe graphic,, i dont get an option to go to fastboot..
Click to expand...
Click to collapse
I see, that's forced boot to recovery because of "wipe data" selected from the bootloader menu.
I don't know how long wiping data takes, maybe you are just not patient enough to let it finish?

_that said:
I see, that's forced boot to recovery because of "wipe data" selected from the bootloader menu.
I don't know how long wiping data takes, maybe you are just not patient enough to let it finish?
Click to expand...
Click to collapse
no, it finished, then said it was booting the recovery image afterwards, then i let it sit for about 2 hours when i went to do something else and it hanged on that screen... no way to fix this from apx mode?

jason41987 said:
no way to fix this from apx mode?
Click to expand...
Click to collapse
APX mode is only useful if you have nvflash, the wheelie tool, and the blob file for your device, which you'd have needed to create with firmware 9.4.5.26 or earlier and the hacked bootloader from androidroot.mobi.

Cannot mount Data Partition with any recovery

I made a F2FS conversion to Data Partition.When I made a restore the Data Partition cannot be Mount or do a Format.With any recovery(CWM,TWRP,Philz) the Data partition Cannot be mounted or formated.What Can I do?I read threads on the Transformer Forum but nothing of these working for me :crying:

andreas1996 said:
I made a F2FS conversion to Data Partition.When I made a restore the Data Partition cannot be Mount or do a Format.With any recovery(CWM,TWRP,Philz) the Data partition Cannot be mounted or formated.What Can I do?I read threads on the Transformer Forum but nothing of these working for me :crying:
Click to expand...
Click to collapse
Only one that can mount it will be twrp 2.7.1.1 (or the f2fs twrp released in dev)
If it has corrupted just format it back to ext4 and start again.

This is the log when I press wipe or repair partition.in the mount menu i cant select any partition
Sent from my GT-I9505G using XDA Free mobile app

andreas1996 said:
This is the log when I press wipe or repair partition.in the mount menu i cant select any partition
Click to expand...
Click to collapse
That's not a log, it's a screenshot. The log is in /tmp/recovery.log, so you can use adb pull to get it and post it. Or you can probably use the "copy log to SD card" option in the advanced menu.

Here is the log.I compressed the file because the log format is not supported to attachments.

andreas1996 said:
Here is the log.I compressed the file because the log format is not supported to attachments.
Click to expand...
Click to collapse
According to the log, your recovery can't access any partitions on your eMMC. To find out more, reboot to your recovery again and run on the connected PC:
Code:
adb shell dmesg > dmesg.txt
adb shell cat /proc/partitions > partitions.txt
and read/post the resulting files.

Here is the two files your commands gave me

andreas1996 said:
Here is the two files your commands gave me
Click to expand...
Click to collapse
Your tablet's eMMC seems to have no partitions at all:
Code:
<6>[ 4.770320] mmcblk0: unknown partition table
What exactly did you do for "a F2FS conversion to Data Partition"? Did you format mmcblk0 instead of mmcblk0p8?

The only thing I did after f2fs conjversion is in Philz recovery I select wipe to install a new ROM.And the problem began.

andreas1996 said:
The only thing I did after f2fs conjversion
Click to expand...
Click to collapse
If you expect help, you need to answer my question. I did not ask what you did *after* the f2fs conversion - what exactly did you do to convert /data to f2fs?

enter recovery-wipe-advanced-repair or change filesystem-f2fs-reboot

andreas1996 said:
enter recovery-wipe-advanced-repair or change filesystem-f2fs-reboot
Click to expand...
Click to collapse
Friend! You got the attention of one of the few people who may be able to help you get your tab back! Use it!
Post DETAILED steps of what you did or _that is going to ignore you!
Which recovery and version thereof did you use?
What did you do afterwards? You mention 3 recoveries. Did you flash all of them?
What did you do in which order in each of them?
Provide as many details as you can!

First I used the modded twrp recovery from the f2fs thread.I did the f2fs and the chromi-kk work successfull.But because battery drain I wanted to install the last chromi-x version based to stock firmware.Next,I didn't convert f2fs back to ext4,but I made a full wipe with twrp 2.7.1.1.And my problems began.
Also I tried full wipe from the latest CWM and Philz recovery with the same results

andreas1996 said:
First I used the modded twrp recovery from the f2fs thread.I did the f2fs and the chromi-kk work successfull.But because battery drain I wanted to install the last chromi-x version based to stock firmware.Next,I didn't convert f2fs back to ext4,but I made a full wipe with twrp 2.7.1.1.And my problems began.
Also I tried full wipe from the latest CWM and Philz recovery with the same results
Click to expand...
Click to collapse
Define "full wipe".
Which CROMi-X version did you try to flash?
Details, details....

andreas1996 said:
First I used the modded twrp recovery from the f2fs thread.I did the f2fs and the chromi-kk work successfull.But because battery drain I wanted to install the last chromi-x version based to stock firmware.Next,I didn't convert f2fs back to ext4,but I made a full wipe with twrp 2.7.1.1.And my problems began.
Also I tried full wipe from the latest CWM and Philz recovery with the same results
Click to expand...
Click to collapse
OK So your issue is that you have left your data partition as f2fs and installed a kernel/rom that does not understand f2fs.....
So as I see it - install a recovery that will reformat as EXT4 - format data and start again?

sbdags said:
So as I see it - install a recovery that will reformat as EXT4 - format data and start again?
Click to expand...
Click to collapse
How would you format data without a data partition?

sbdags said:
OK So your issue is that you have left your data partition as f2fs and installed a kernel/rom that does not understand f2fs.....
So as I see it - install a recovery that will reformat as EXT4 - format data and start again?
Click to expand...
Click to collapse
I tried that but the TWRP gave me a ERROR message(cannot mount Data).Tomorrow i will upload screenshots and full logs for that,because my transformer has empty battery because of the attempts

andreas1996 said:
I tried that but the TWRP gave me a ERROR message(cannot mount Data).Tomorrow i will upload screenshots and full logs for that,because my transformer has empty battery because of the attempts
Click to expand...
Click to collapse
So try formatting from adb?
Code:
adb shell
killall -19 recovery
make_ext4fs /dev/block/mmcblk0p8
reboot

sbdags said:
So try formatting from adb?
Code:
adb shell
killall -19 recovery
make_ext4fs /dev/block/mmcblk0p8
reboot
Click to expand...
Click to collapse
When I doing the command (make_ext4fs /dev/block/mmcblk0p8) I receive the message : Need size of file system.

Something seems to be wrong with your GPT. Unfortunately the busybox tools don't support big offsets to read it, so let's first see if the Tegra-specific partition table (which is not used by the kernel) is still there - that won't help you immediately but will show if the eMMC can be read at all and where the partitions are supposed to be. Post the output file of this command:
adb shell hexdump -s 0x300000 -n 2048 -C /dev/block/mmcblk0boot0 > pt.txt

[Q] Help i may have doomed my tablet.

So here's my situation.
I was trying to move a file from my internal storage to my microsd using the twrp file manager, it was successful but file remained in the internal storage at the sametime the file was in my microsd. So i thought it might be a glitch so I rebooted and entered to twrp again, but suddenly the splash screen flashed and froze. So i rebooted it again and tried again, the samething happened. It just flashed and then frozed at the twrp splash screen. I tried to drain my tablet and then turned it on and tried to go to the twrp, but the samething happened. I tried booting to android but it wont boot, i'm using grimlock 4.0 and I'm on data2sd. It's stuck at the pre.init screen. I can use fastboot, i tried to reflash twrp with the lastest one, i erased the previous one and flashed the latest one using fastboot, it worked but it cannot mount any partitions except my microsd card and whenever you reboot it and go back to recovery the twrp screen flashes and freezes. I need help i think i may have doomed my tablet.
P.s i erased the boot, system, partitions in hopes that i can reset everything but apparently it doesn't work.

supernova0 said:
So here's my situation.
I was trying to move a file from my internal storage to my microsd using the twrp file manager, it was successful but file remained in the internal storage at the sametime the file was in my microsd. So i thought it might be a glitch so I rebooted and entered to twrp again, but suddenly the splash screen flashed and froze. So i rebooted it again and tried again, the samething happened. It just flashed and then frozed at the twrp splash screen. I tried to drain my tablet and then turned it on and tried to go to the twrp, but the samething happened. I tried booting to android but it wont boot, i'm using grimlock 4.0 and I'm on data2sd. It's stuck at the pre.init screen. I can use fastboot, i tried to reflash twrp with the lastest one, i erased the previous one and flashed the latest one using fastboot, it worked but it cannot mount any partitions except my microsd card and whenever you reboot it and go back to recovery the twrp screen flashes and freezes. I need help i think i may have doomed my tablet.
P.s i erased the boot, system, partitions in hopes that i can reset everything but apparently it doesn't work.
Click to expand...
Click to collapse
As long as you can fastboot, you have not 'doomed' your tablet.
Flash newest stock ROM from ASUS site and you will be set:
1. Unzip stock ROM zip file twice and you will get a file 'blob'
2. Put blob file into fastboot folder.
3. Fastboot ROM using:
Code:
fastboot -i 0x0b05 flash staging blob [enter]
fastboot -i 0x0b05 reboot [enter]
4. Let blue progressbar finish (will need a long, long time) and tab will reboot itself.
5. Now you should be on working stock ROM and can flash custom TWRP (2.8.x.x).
Good luck!

das chaos said:
As long as you can fastboot, you have not 'doomed' your tablet.
Flash newest stock ROM from ASUS site and you will be set:
1. Unzip stock ROM zip file twice and you will get a file 'blob'
2. Put blob file into fastboot folder.
3. Fastboot ROM using:
Code:
fastboot -i 0x0b05 flash staging blob [enter]
fastboot -i 0x0b05 reboot [enter]
4. Let blue progressbar finish (will need a long, long time) and tab will reboot itself.
5. Now you should be on working stock ROM and can flash custom TWRP (2.8.x.x).
Good luck!
Click to expand...
Click to collapse
I was able to that, but the filesystem that I was using was f2fs so when I booted to the stockrom it said" encryption unsuccessful" so i had to format my data partition to a compatible format. so i flash twrp recovery, but I had the same problem, the screen flashes and then it stays at the twrp splash screen. then I thought it might be a problem with my data partition, so I erased my whole data partition using fastboot, with the command
fastboot format userdata
it worked and the recovery is working also, but my filesystem is on ext3 and I know ext 4 is better than ext 3, so using the twrp recovery I formatted my data partition to ext4 but suddenly the recovery hangs and doesn't finish the format. it there a way that this could be fixed? I really want to use a better file system.

supernova0 said:
..... I formatted my data partition to ext4 but suddenly the recovery hangs and doesn't finish the format. it there a way that this could be fixed? I really want to use a better file system.
Click to expand...
Click to collapse
Probably it didn't hang but you didn't have the patience! Formatting a /data partition to ext4 can last a long, long time. People reportet as much as 90 min. In my case it was 30 min. So, be patient!

das chaos said:
Probably it didn't hang but you didn't have the patience! Formatting a /data partition to ext4 can last a long, long time. People reportet as much as 90 min. In my case it was 30 min. So, be patient!
Click to expand...
Click to collapse
Thanks it worked!!! thank you very much
The file system is now on ext4 but whenever I try to flash it to f2fs it gives me:
Unknown mtp message type 1
And then its unable to format to f2fs.

supernova0 said:
Thanks it worked!!! thank you very much
The file system is now on ext4 but whenever I try to flash it to f2fs it gives me:
Unknown mtp message type 1
And then its unable to format to f2fs.
Click to expand...
Click to collapse
1. You reasonably can only format /data with f2fs
2. Reliable formatting f2fs is possible with newest TWRP 2.8.5.0; Goto tab 'Wipe'=> check only /data=>Change File System=>check f2fs
3. Depending on what ROM you are actually, there might be a command 'mkfs.f2fs' in /system/bin; you can format manually by opening Terminal Emulator typing:
Code:
su [enter]
mkfs.f2fs /dev/block/mmcblk0p8 [enter]
be carefully, what you type! Mistyping can render your tab bricked.

das chaos said:
1. You reasonably can only format /data with f2fs
2. Reliable formatting f2fs is possible with newest TWRP 2.8.5.0; Goto tab 'Wipe'=> check only /data=>Change File System=>check f2fs
3. Depending on what ROM you are actually, there might be a command 'mkfs.f2fs' in /system/bin; you can format manually by opening Terminal Emulator typing:
Code:
su [enter]
mkfs.f2fs /dev/block/mmcblk0p8 [enter]
be carefully, what you type! Mistyping can render your tab bricked.
Click to expand...
Click to collapse
Ok, I found myself here as well. I recovered and have KatKiss 5.0.2 #18 installed and running. I do have TWRP 2.8.5 and it will not convert my /data to f2fs with the same error above. It worked once but then I got hungup on a Google restore and it corrupted everything forcing me to Asus restore. This ROM doesn't have mkfs.f2fs.
How else can I convert to f2fs? Is there another way to do this via ADB or getting the mkfs.f2fs command to drop in /system/bin/?
Thanks--

bretzke said:
Ok, I found myself here as well. I recovered and have KatKiss 5.0.2 #18 installed and running. I do have TWRP 2.8.5 and it will not convert my /data to f2fs with the same error above. It worked once but then I got hungup on a Google restore and it corrupted everything forcing me to Asus restore. This ROM doesn't have mkfs.f2fs.
How else can I convert to f2fs? Is there another way to do this via ADB or getting the mkfs.f2fs command to drop in /system/bin/?
Thanks--
Click to expand...
Click to collapse
Try that mkfs.f2fs command from recovery in a shell from a PC
Or after it fails pull a recovery log .....
Code:
adb pull /tmp/recovery.log
paste it on pastebin or upload it to xda .....
Thx Josh

lj50036 said:
Try that mkfs.f2fs command from recovery in a shell from a PC
Or after it fails pull a recovery log .....
Code:
adb pull /tmp/recovery.log
paste it on pastebin or upload it to xda .....
Thx Josh
Click to expand...
Click to collapse
Thanks for helping...here's the log: http://pastebin.com/Fr5q88PH
Here is the error:
Formatting Data using mkfs.f2fs...
mkfs.f2fs: invalid option -- r
I:mkfs.f2fs -t 1 -r 16384 /dev/block/mmcblk0p8 process ended with ERROR=1

bretzke said:
Thanks for helping...here's the log: http://pastebin.com/Fr5q88PH
Here is the error:
Formatting Data using mkfs.f2fs...
mkfs.f2fs: invalid option -- r
I:mkfs.f2fs -t 1 -r 16384 /dev/block/mmcblk0p8 process ended with ERROR=1
Click to expand...
Click to collapse
Thanks for your assistance Josh. It turns out 2.8.5 has a bug for f2fs conversion on many/most devices. Loaded 2.8.4 and it worked perfectly.

bretzke said:
Thanks for your assistance Josh. It turns out 2.8.5 has a bug for f2fs conversion on many/most devices. Loaded 2.8.4 and it worked perfectly.
Click to expand...
Click to collapse
See you found your own answer and I like that ..... :good:
Thx Josh

How Can I Get Out of This Bootloop on My Moto G

I woke up to find my 1st Generation Moto G battery was depleted and on charging it a bit., I switched it on only to find it optimizing my apps. All these (battery getting depleted, app optimization) happen all the time and I wasn't the least worried.
I picked up my phone later thinking it must have been done with the app optimization only to discover it was totally dead while still connected to a power bank. When I try to switch it on, it is stuck on the "Unlock Bootloader" page. I have tried flashing a new stock rom and it does not work.
I attached the image I see when I try to use recovery to wipe. Basically, nothing works. Can anybody help as I just fixed the screen and also out of warranty?

Fastboot flash the latest Factory Firmware Image for your model.
Factory Firmware Images: http://forum.xda-developers.com/moto-g/general/index-moto-g-falcon-factory-firmware-t3110795
Fastboot Tutorial: http://forum.xda-developers.com/showthread.php?t=2542219

lost101 said:
Fastboot flash the latest Factory Firmware Image for your model.
Factory Firmware Images: http://forum.xda-developers.com/moto-g/general/index-moto-g-falcon-factory-firmware-t3110795
Fastboot Tutorial: http://forum.xda-developers.com/showthread.php?t=2542219
Click to expand...
Click to collapse
Thanks lost101, I do know how to flash perfectly well with fastboot. The problem is it flashes successfully but the phone is still stuck on the Bootloader.
I get this particular message on my recovery when I try to wipe either userdata or cache.
blkdiscard on partition /dev/block/platform/msm_sdcc.1/by-name/userdata failed formatting /userdata failed
formatting cache
and
blkdiscard on partition /dev/block/platform/msm_sdcc.1/by-name/userdata failed formatting /cache
wiping clogo

@NaijaAndroid - Can you try booting into TWRP via: fastboot boot twrp.img

lost101 said:
@NaijaAndroid - Can you try booting into TWRP via: fastboot boot twrp.img
Click to expand...
Click to collapse
I do not have a custom recovery presently but when I try to flash TWRP, it flashes successfully with no error message but the phone is still stuck on the stock recovery.

NaijaAndroid said:
I do not have a custom recovery presently but when I try to flash TWRP, it flashes successfully with no error message but the phone is still stuck on the stock recovery.
Click to expand...
Click to collapse
Read again what I told you to do. I did not say for you to flash anything.

@lost101, I just read your instructions again. I can boot in to TWRP. What else should I do after?
Thanks.

NaijaAndroid said:
@lost101, I just read your instructions again. I can boot in to TWRP. What else should I do after?
Click to expand...
Click to collapse
Via PC, do the following wipe: (requires working ADB setup)
http://forum.xda-developers.com/showpost.php?p=65431978&postcount=22​
You could then TWRP > Wipe > Format Data > Yes, and try flashing a custom ROM.
Edit: You should backup photos or important data before hand.

I just downloaded CM 12.1. How can I transfer the ROM to the phone?
Edit: I have done it.

NaijaAndroid said:
I just downloaded CM 12.1. How can I transfer the ROM to the phone?
Click to expand...
Click to collapse
Recovery mode ADB will work with Linux - unsure about Windows. You could boot into an Ubuntu LiveCD (without installing) and transfer the ROM to phone that way. Otherwise, an OTG usb pen would be another option.
adb push rom.zip /sdcard​

@lost101, I tried to send the Rom via ADB and I got : failed to copy 'Rom.zip' to '/sdcard//Rom.zip' : Read-only file system.
Also, TWRP made my phone to load as MTP on my PC but I could not transfer through that method also. The transfer kept on failing. Seems my internal memory (eMMC) is now Read-only.

NaijaAndroid said:
@lost101, I tried to send the Rom via ADB and I got : failed to copy 'Rom.zip' to '/sdcard//Rom.zip' : Read-only file system.
Also, TWRP made my phone to load as MTP on my PC but I could not transfer through that method also. The transfer kept on failing. Seems my internal memory (eMMC) is now Read-only.
Click to expand...
Click to collapse
Try sideloading the ROM.
TWRP > ADB sideload​adb sideload rom.zip​

lost101 said:
Try sideloading the ROM.
TWRP > ADB sideload​adb sideload rom.zip​
Click to expand...
Click to collapse
I got:
Installing zip file '/sideload/package.zip'
detected filesystem ext4 for /dev/block/platform/msm_sdcc.1/by-name/system
Can't install this package on top of incompatible data. Please try another package or run a factory reset
Updater process ended with ERROR: 7
I was trying to use CM 12.1.
So sorry for taking your time. Thanks.

NaijaAndroid said:
I got:
Installing zip file '/sideload/package.zip'
detected filesystem ext4 for /dev/block/platform/msm_sdcc.1/by-name/system
Can't install this package on top of incompatible data. Please try another package or run a factory reset
Updater process ended with ERROR: 7
I was trying to use CM 12.1.
Click to expand...
Click to collapse
Try a CM13 ROM.

lost101 said:
Try a CM13 ROM.
Click to expand...
Click to collapse
Same problem as above. I got the same message.

On PC:
adb shell​e2fsck /dev/block/platform/msm_sdcc.1/by-name/userdata​

lost101 said:
On PC:
adb shell​e2fsck /dev/block/platform/msm_sdcc.1/by-name/userdata​
Click to expand...
Click to collapse
I got:
/dev/block/platform/msm_sdcc.1/by-name/userdata is in use.
e2fsck: Cannot continue, aborting.

NaijaAndroid said:
I got:
/dev/block/platform/msm_sdcc.1/by-name/userdata is in use.
e2fsck: Cannot continue, aborting.
Click to expand...
Click to collapse
TWRP > MOUNT > Untick /Data​

lost101 said:
TWRP > MOUNT > Untick /Data​
Click to expand...
Click to collapse
got this after unticking data and trying again:
e2fsck 1.42.9 (28-Dec-2013)
ext2fs_open2: Bad magic number in super-block
e2fsck: Superblock invalid, trying backup blocks...
e2fsck: Bad magic number in super-block while trying to open /dev/block/platform
/msm_sdcc.1/by-name/userdata
The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:

NaijaAndroid said:
got this after unticking data and trying again:
e2fsck 1.42.9 (28-Dec-2013)
ext2fs_open2: Bad magic number in super-block
e2fsck: Superblock invalid, trying backup blocks...
e2fsck: Bad magic number in super-block while trying to open /dev/block/platform
/msm_sdcc.1/by-name/userdata
The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
Click to expand...
Click to collapse
A certain percentage of phones end up with corrupt emmc (internal storage) over time. This problem is a fairly common thing. I do recall someone managing to boot an use CM13, despite the read-only userdata. I'm guessing they must have flashed it via TWRP, with the ROM.zip on an OTG usb pen. It may have worked because /system was still partially / fully writeable.

Can't flash anything through recovery. (failed to mount "/cpefs" (Invalid Response)

Can't flash anything through recovery. (failed to mount "/cpefs" (Invalid Response)
I recently got this phone and I've been trying to install a custom rom, however, I can't seem to do anything while using TWRP. For some reason the file explorer shows no files and no /storage folder. It also says that the /system partition weights 0MB. I've already tried formatting the /data partition from EXT4 to extFAT, but it won't let me because it cannot mount the "/cpefs" partition, which I've been unable to find any information about.
I can flash the stock firmware trough ODIN, and I can flash the recovery. The internal storage works fine, but nothing shows up when I open TWRP.
I've tried formatting the data partition, repairing it, changing the partition format, wiping, installing a custom rom, installing superSU. But it won't allow me to do any of those things. Either "/data" can't be mounted, or "/cpefs" can't be mounted while formatting /data.

Cepillado said:
I recently got this phone and I've been trying to install a custom rom, however, I can't seem to do anything while using TWRP. For some reason the file explorer shows no files and no /storage folder. It also says that the /system partition weights 0MB. I've already tried formatting the /data partition from EXT4 to extFAT, but it won't let me because it cannot mount the "/cpefs" partition, which I've been unable to find any information about.
I can flash the stock firmware trough ODIN, and I can flash the recovery. The internal storage works fine, but nothing shows up when I open TWRP.
I've tried formatting the data partition, repairing it, changing the partition format, wiping, installing a custom rom, installing superSU. But it won't allow me to do any of those things. Either "/data" can't be mounted, or "/cpefs" can't be mounted while formatting /data.
Click to expand...
Click to collapse
Which phone you're using?
J7 Pro?
Secondly make sure to enable OEM unlock options from the stock ROM's Developer option!
Thirdly check the recovery patches etc of the desired recovery's webiste (you're using) and flash it through the recovery if you're facing the problem!
It'll work, mostly some users said they fixed this by the above mentioned step!
If no luck, maybe someone will sort it out for ya, soon! :laugh:
Good Luck! :good:

sosukeaizen said:
Which phone you're using?
J7 Pro?
Secondly make sure to enable OEM unlock options from the stock ROM's Developer option!
Thirdly check the recovery patches etc of the desired recovery's webiste (you're using) and flash it through the recovery if you're facing the problem!
It'll work, mostly some users said they fixed this by the above mentioned step!
If no luck, maybe someone will sort it out for ya, soon! :laugh:
Good Luck! :good:
Click to expand...
Click to collapse
Thanks for your reply. The model of the phone is SM-J710MN. The OEM unlock option is enabled, otherwise I wouldn't be able to flash the recovery. I am trying to use TWRP. Where would I find a recovery patch for this model?. Everything works fine in the recovery, but it won't let me wipe/format/repair or change ANY partition. It can't mount anything, and the error that I see the most often is that it cannot mount the /cpefs partition.

Cepillado said:
Thanks for your reply. The model of the phone is SM-J710MN. The OEM unlock option is enabled, otherwise I wouldn't be able to flash the recovery. I am trying to use TWRP. Where would I find a recovery patch for this model?. Everything works fine in the recovery, but it won't let me wipe/format/repair or change ANY partition. It can't mount anything, and the error that I see the most often is that it cannot mount the /cpefs partition.
Click to expand...
Click to collapse
try flashing a lower version of the same frimware you've already installed e.g if the latest is nougat 7.1.1 with the recent security update, try flashing with another nougat version that is lower to the recent one's security patch #