Develop Bugs

[Q] Wipe Dalvik Cache error

Hi All,
I did some mess i guess.
Whenever i try to Wipe Dalvik Cache. i get the following error
Formatting /cache....
Cache wipe complete.
E:failed to find "userdata" partition to mount at "/data"
now i m unable to flash even official firmware.
even tried to format /data.
formatting /data
E:format_volume: no MTD partition "userdata"
Error formatting /data!
now i aint got nay clue to fix this plz Help

vitaminme said:
Hi All,
I did some mess i guess.
Whenever i try to Wipe Dalvik Cache. i get the following error
Formatting /cache....
Cache wipe complete.
E:failed to find "userdata" partition to mount at "/data"
now i m unable to flash even official firmware.
even tried to format /data.
formatting /data
E:format_volume: no MTD partition "userdata"
Error formatting /data!
now i aint got nay clue to fix this plz Help
Click to expand...
Click to collapse
Dev thread not [email protected]
Sent from my MT15i using XDA Premium HD app

Seems like you got the partition tables messed up.
I'm no pro so I don't know what could be done.

Hey All, Thanks.
Fixed it some how.
First downloaded FOTA bricked. followed the steps.
Then tried to flash latest GB with his latest/old flash tool (linux). but that didn't work
tried older Flashtool windows Version 0.2.9.1 with firmware 4.0.A.2.368 (This was my rescue)
Finally phone booted

[Q] I've unmounted and reset and am now stuck. Help?

I've already looked through previous posts and there seems to be no avail.
From 4.1.2. stock build, UVDMD5, (I'm assuming, that's when I bought it)
I tried to flash 4.4 ROMS onto it, Both Gummy and Beanstalk with their respective Gapps.
It wouldn't work and I wiped and reset and odin'd in the original firmware UVDMD5, so it successfully led to the beginning phone setup ONCE.
Then, from stock, I figured why not root and flash the ROMS once more? and this time, the galaxy would not have it.
I odin'd myself after the roms failed once more, but now..
Now the phone is stuck at the SAMSUNG loading boot screen.
Everytime I odin in the UVDMD5 setup, it says it's successful but constantly stuck at the boot screen.
I can get myself into recovery but no options are available to me.
If I try to progress forward, the roms will not work and I realized what might've done me in.
Once the roms in the very first trials wouldn't work, I messed with the mounting to see if it would change anything(HUGE mistake I now realize)
I think I unmounted /data and /system and pretty much everything!!!
I'm in the stock recovery so I could pull .zips from the external SD and I've tried to put in Cyanogenmod Recovery so I could get to the mounting options,
but now everytime it says that signature verification failed.
Tl;dr: I'm an idiot and unmounted everything and now it's stuck at boot screen and odin doesn't work. PLS HELP!
ps: ignore the ageold signature

First flash the very latest Recovery with ODIN. You will need to put the phone in download mode to do that. Next, flash Root66 version of UVDMD5 via odin and then flash Rom of your choice via Recovery.

I've taken the root66 and finished odin'ing it in, but no success. It's still stuck on the SAMSUNG screen.
When I boot up to (stock) recovery, the first red messages that appear is
E:failed to mount /data
can't mount '/data' (invalid argument)
and when I go into >apply update from external storage and try to apply cyanogen latest recovery,
all it gives me is E:failed to verify whole-file storage.
There is no /data, what do I do?

Please flash CWM Recovery via Odin.

First of all, thanks for sticking with me for this long.
I successfully installed Clockwork with odin and I thought this would be the end, but
It successfully mounted /system and /external_sd but,
Error mounting /data!
Error mounting /sdcard!
I don't know what to do from here. Is there a simple fix?

Did you flash latest version of CWM ? If yes then try Factory Reset in the Recovery.

I did factory reset it:
. . wiping data . .
formatting /data . . .
Error mounting /data!
Skipping format . . .
Formatting /cache
Formatting /sd-ext
Formatting /sdcard/ .android_secure
Error mounting /sdcard/ .android_secure!
Skipping format . . .
Data Wipe Complete.
Is what shows up and still /data and /sdcard cannot be mounted. Anything else? I'm desperate.

Part 2: I tried moving past all that and tried to run the ROMS, but it goes on to tell me:
This package is for "d2tmo" devices; this is a "d2vzw"
what does that mean?

Can you manually mount SD Card in the Recovery ?
I'd not try any roms until this issue is resolved.

What do you mean by manually?
The external sd card can be mounted, I'm pretty sure it means that the internal sd can't be mounted.
How would I mount internal in recovery? the options says it can't mount /data and /sdcard

Try TWRP Recovery.

[Q] i9195 bootloop

Hello,
I changed LCD display on my i9195 phone, and after replacement, when I tried to put this phone on, it stucks on bootloop.
So, when i put phone on, it vibrate, logo Samsung Galaxy S4 mini appear and it goes off, 2 x vibrate and reset again.
I tried to flash 2 stock roms, but it didn´t helped.
Then, in CWM i found some interesting texts:
Wipe cache partition
--Wiping Cache..
Formating /cache
Cache wipe completed
Wipe data/factory reset
--Wiping data...
Formating /data
Error mounting /data
Skipping format...
Formatting /cache
Formatting /sd-ext...
Formatting /sd-card/ .android_secure!
Skipping format...
Data wipe completed.
CWM /advanced / show log
mount: mounting /dev/block/platform/msm_sdcc.1/by-name/userdata on /data failed: Invalid argument
W: faild to mount /dev/block/platform/msm_sdcc.1/by-name/userdata (File exists)
When i try to "mount /data "
Error mounting /data
I also tried two times to "install" .pit file via odin, but it didn´t helped.
So, there is no /scdard and /data anymore! I can´t even try to install zip from /sdcard. Flash stock rom didn´t help. New .pit file didn´t help.
Could you please help me? Many thanks.

Simply flash a stock ROM, do not check "repartition"!!! No need of PIT file. After flashing process will be done phone will reboot and make a wipe by itself. Then it will reboot automatically. But, it won`t boot, and you`ll get a freezed "Samsung" text. Simply turn off the phone by long pushing of the power button/ or pull battery out. Then boot your phone to recovery and make a wipe/factory reset, then reboot your phone. Enjoy.

Hi
Kony_i9195 said:
Hello,
I changed LCD display on my i9195 phone, and after replacement, when I tried to put this phone on, it stucks on bootloop.
So, when i put phone on, it vibrate, logo Samsung Galaxy S4 mini appear and it goes off, 2 x vibrate and reset again.
I tried to flash 2 stock roms, but it didn´t helped.
Then, in CWM i found some interesting texts:
Wipe cache partition
--Wiping Cache..
Formating /cache
Cache wipe completed
Wipe data/factory reset
--Wiping data...
Formating /data
Error mounting /data
Skipping format...
Formatting /cache
Formatting /sd-ext...
Formatting /sd-card/ .android_secure!
Skipping format...
Data wipe completed.
CWM /advanced / show log
mount: mounting /dev/block/platform/msm_sdcc.1/by-name/userdata on /data failed: Invalid argument
W: faild to mount /dev/block/platform/msm_sdcc.1/by-name/userdata (File exists)
When i try to "mount /data "
Error mounting /data
I also tried two times to "install" .pit file via odin, but it didn´t helped.
So, there is no /scdard and /data anymore! I can´t even try to install zip from /sdcard. Flash stock rom didn´t help. New .pit file didn´t help.
Could you please help me? Many thanks.
Click to expand...
Click to collapse
You could look into the s4 mini general forum for my unbrick thread I hope it helps report back
Sent from my unknown using XDA Premium 4 mobile app

djtyta : I tried this with 2 stock roms, and it didn´t work.
Aronuser: I found your unbrick topic before i wrote here, but it didn´t work as well.
Anyway, many thanks for response.

So, after 8 hours of scouting, what it could be. I flashed kernel and it works now.
But i found another problem. Touch display doesn´t work. Power button, volume button and bottom buttons(menu,home,back) works.
Any solutions? Many thanks.

Kony_i9195 said:
So, after 8 hours of scouting, what it could be. I flashed kernel and it works now.
But i found another problem. Touch display doesn´t work. Power button, volume button and bottom buttons(menu,home,back) works.
Any solutions? Many thanks.
Click to expand...
Click to collapse
The same is happening here.
Which kernel did you use?
Managed to solve the problem of touch?

External SD not recognized in Rom or Recovery

Hi, i didn't use my m8 for a while. I had flashed a Liquid-Smooth Lollipop-Rom and wanted to setup the phone again until i noticed that the external SD card is not mounted and not recognized at all.
SD card itself is not the issue, i tried it on different phones and computers, it worked all fine, formatted it in FAT32 etc.. It's working on any other system, but not with the m8. Also other cards are not working with the phone.
I tried PhilzRecorvery and TWRP and the Cyanogenmod 12+13 (using adb sideload), no changes at all.
My Phone is S-ON, at the moment i use TWRP v2.8.7.0 and Cyanogenmod 12.1.
Using the partitioning function of TWRP it says
E: Unable to locate device or partition
Click to expand...
Click to collapse
If i go to the Wipe menue and select "Micro SDcard" and "SD-Ext" it says:
E: mkdosf process emded with ERROR=1
E: Unable to wipe ' /external_sd' .
E: Unknown MTP message type: 1
E: Unable to wipe 'external_sd'
Updating partition details...
...done
Updating partition details...
...done
Click to expand...
Click to collapse
I hope these are all the necessary infomations. I am not very experienced in modding android, but at least i know how to flash roms and the basic sdk-plattform tools, whatever.
Thank you very much and please be kind, i am not an expert!

Can't restore TWRP /data backup

Hi,
Hope you guys can help me getting my data back.
I messed around with Substratum in legacy mode on OOS 4.1.0 and ended up with a bootloop (I never saw the boot animation restart, just looping endlessly). To fix, I tried the following things:
Flashed the SubstratumRecovery_legacy.zip in TWRP 3.1.0-0 without any effect.
Dirty-flashed OnePlus3Oxygen_16_OTA_047_all_1703132116_f7372e67 without any effect.
Flashed OnePlus3Oxygen_16_OTA_047_all_1703132116_f7372e67 through ADB sideload without any effect.
Wiped data partition in recovery. System started normally, all data gone (obviously).
Before wiping, I had made a backup of my /data partition (through TWRP backup tool for Mac) and saved the content of /sdcard on the computer as well.
Now when I try to restore the /data backup through the same tool, I get an error:
E:Unable to find file system (first period).
E:Unable to find file system (first period).
E:Unknown restore method for '/data'
ADB Restore failed.
So what can I do to restore my data partition? That's all I care about.
Thanks in advance

Mount data in twrp?..

ASFAIK, /data is mounted rw automatically by TWRP. It also doesn't make a difference.
Moreover, I also cannot restore my boot partition (kernel), same error.
A while ago I changed my filesystem to f2fs. Can that be the culprit?

Nevermind, I've given up and accepted the loss of data. However, it would still be interesting to find out what the problem was

I had the same problem, tried several times. Then I went back and turned of the md5 check and it worked perfect.

Do u still have ur trwp backup or did u delete it
https://forum.xda-developers.com/showpost.php?p=53913623&postcount=22

I still have it on the computer and wouldn't mind making use of it (installed official Resurrection Remix after the data loss but that just wiped my /data partition after backing up kernel in TWRP)
@Bradl79: sounds interesting, will give that a go later when I have some time.