SM-T580 booting and partition issues - Samsung Galaxy Tab A series Questions & Answers

I decided to re-partition my tablet's internal storage to free more space for user apps and data. Unfortunately I got part way through the guide and decided to reboot my tablet (which was a bad idea), as now I can mount all the partitions in twrp using the mount -a command and editing the fstab file, but in twrp it shows system, data, and cache as not being present.
Any help is greatly appreciated

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[Q] 0.00b free on /system after rooting

Dear all,
I tried to use link2sd on my S6102, so first I rooted it using this tutorial (which is linked in the link2sd tutorial):
http://forum.xda-developers.com/showthread.php?t=1611830
After applying update.zip, link2sd reports 0.00b on /system, thus the error message when starting link2sd:
"Mount script cannot be created. write: No space left on device.
Before applying update.zip, it was 1.4Mb in /system.
What does it mean? Did I do anything wrong?
BTW in this state, I tried to install the 15toggles package, which resulted in boot loop - had to restore nandroid backup via cwm. Maybe the same reason?
Thanks a lot!
To create a mount script you need a 2nd ext partition on your sd card - nothing to do with /system although you do need space there to place the script which I think is your problem
if you have got /system problems wipe Dalvik cache in cwm
if you still have problems You will have to wipe system & data and install a custom rom that is pre rooted
Yes 2nd partition is there and yes I think it is the script itself which doesn't fit in /system
Wiping dalvik cache did not change anything...
Maybe I can find another root "package" and try with that...

Bootlooping out of nowhere, cant mount /data

All,
I have a SM-G35FD which is in a bad state. My phone started boot looping one morning after it was fine the night prior (3 days ago now) and I believe an auto-update may be the root cause. I am trying to find any way to access the internal memory to recover data, however I am not able to mount /data or /sdcard. I have not done much with my phone besides adding root, no CFWs ever, and no custom recoveries (prior to today). Also, I lock my phone with my thumbprint. I did not go through any encryption setup on my device.
Details about the initial problem:
It started boot looping several times and at some point it shows a black screen with red text. after letting the battery drain (because I could not force reboot) i was able to get into stock recovery and wipe the cache and reboot; this led to occasionally getting to the security screen which would freeze 1-2 seconds after logging in.
Things I have tried (19mar2017)
got into stock recovery, wiped cache, rebooted. Freezes at security login screen
Installed TWRP to get more functionatity. Was able to install TWRP
used TWRP to try to mount Data, but it will not mount (only System, Cache, EFS, and USB OTG will mount)
used TWRP to wipe Dalvik and Cache only. Errors show "cannot mount /data"
used TWRP to install CWF, freezes during extraction (4-5%)
can use ADB to run shell
UPDATE 20mar2017: Ran "Wipe -> Advanced Wipe -> *Select System Partition -> Repair or Change File System" on /system. I think this was a bad move as now I can access the /sdcard folder and its missing all data. I didn't think it would matter since the options under Wipe show "System" and "Internal Storage" separately.
Perhaps data does not mount because it needs my thumbprint? Is there anything I can try to backup the internal user memory partition and my fingerprint signatures? any way to access the user data?
Thanks to all for their time!
I found a video ( https://www.youtube.com/watch?v=VJRKuQf0puE ) which suggest that I can use TWRP to "change the filesystem" for the /System (and other) mounts in order to fix the /data mount. This can be accessed using Recovery(TWRP) -> Wipe -> Advanced Wipe -> *Select System Partition -> Repair or Change File System -> Change File System -> Options { EXT2, EXT3, EXT4, FAT, exFAT, F2FS }. Since my goal is to recover the "User Data" partition, I would not perform this on "Internal Memory" but would on the other partitions. Hopefully this would allow me to reinstall the Stock FW and allow me to login to the Internal Memory to access my files.
Does anyone know if using "Repair or Change File System" will impact the Internal Storage?
Try to reinstall the Stock Firmware Through Odin, I had this problem also when I used to own a J5... All I did was just Reinstall the stock firmware... if you want to find the stock firmware.. just go to sammobile.com

EDI-AL10 Data Problem

I have quite an unusual problem with my Huawei Honor Note 8 EDI-AL10.
On the Surface it boots up OK, functions OK and you would not know there are any issues.
The Bootloader is unlocked via DC-Unlocker code (confirmed by software) and the phone is rooted (confirmed).
I have TWRP installed via ADB (it's a version modded for this phone since there is not a specific version for it).
I am able to create and restore a Nandroid backup.
The phone is on on Android 7 and was trying to upgrade to Android 8, or perhaps try a custom ROM when I found that TWRP literally can't do anything with the Data folder/partition.
It can't mount it or wipe it. A Google search found a common problem which only needed for me to change to fat and then back to ext3 but like I said it let's you do nothing.
Things i have tried so far are:
Wipe/Advanced wipe/data/FAILED UNABLE TO MOUNT DATA
Wipe/Format Data/type yes, press Enter, begin erase, fails because
FAILED UNABLE TO MOUNT DATA
Wipe/Advanced wipe/repair or Change File System/Resize File
System/FAILED UNABLE TO MOUNT DATA
Wipe/Advanced wipe/repair or Repair File System/Resize File
System/FAILED UNABLE TO MOUNT DATA
Wipe/Advanced wipe/Change or Change File System/Resize File
System/FAILED UNABLE TO MOUNT DATA - Unable to convert to Ext2, Fat,
Ext3 or exFat FAILED UNABLE TO MOUNT DATA
Basically Data is bullet proof and you cant touch it.
The size of data shows as 0 in TWRP, yet it is not? It may be corrupt but I can't clear it.
Within the Android OS if I I go to Factory reset and follow it, it just takes me to TWRP then when I reboot all is unchanged.
Could it be TWRP? But all else seems OK so unlikely. I have tried other versions some claiming to be modded for this phone but they don't work - they crash the phone and then I have to reinstall the original TWRP via
the PC and ADB.
I tried following some guides to format data using ADB but it didn't work.
I have not encrypted the phone.
Any ideas anyone?
If you are suggesting anything technical please put in layman's terms.
Many thanks.
Eric.

Need help with partition tree user data name

Hi, I was having some trouble with installing a custom ROM on my j5y17zte because I did not have a vendor partition, I have used sgdisk commands in twrp to delete the user data partition, and create the partitions vendor and user data. After reboot, the problem persisted and so I tried to change the name of the partition "vendor" to "VENDOR" which enabled it to be correctly recognised as the /vendor partition. However, I have forgotten the name of the user data partition, and after trying some variations, I can't find the correct name of the user data partition. To get it, you can either open an adb shell terminal in the computer or using the recovery's terminal. Using the command:
sgdisk --print /dev/block/mmcblk0
prints the partition names and some data about them. I would need the name as it appers of the user data partition.
Thank you in advance

Internal Storage 0MB unable to mount including Data thus wipe Data failed always asking for Decrypt Data

Internal Storage 0MB unable to mount including Data thus wipe Data failed always asking for Decrypt Data
As titled, after unlocking bootloader using the unlock.sh script method, already flashed several versions of twrp recoveries yet no one can mount the Internal Storage.
Rom is still stock Security patch Oct2018 ASUS_X00TDB OPM1.WW_Phone-15.2016.1810.334-20181019 .
(I tried flashing decrypt.zip from mounted external OTG USB, it seems successful but then the Decrypt Data is still there. )
It is unbelievable that twrp unable to mount the internal storage. Any help greatly appreciated tks
formate data reboot recovery mount system, data and persist flash decrypt zip. if failed flash magisk also.
Update: not sure which one or both solved the internal storage zero issue, by:
1. flashing Disable_Dm-Verity_ForceEncrypt_11.02.2020.zip
2. in twrp, Wipe || Format Data || yes (warning: Data will be deleted in the wipe) (with the Setting "Use rm -rf instead of formatting" UNticked beforehand)

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