[Samsung Galaxy S7 Edge Questions and Answers] ebayusuff:
Flash stock rom Android 8 Oreo and TWRP, root on Galaxy S7 edge (G935F) without TWRP internal storage 0 mb issue and create TarFork() process ended with ERROR: 255 on TWRP backup (tested by me %100 working)

This work took more than one day to solve all the problems.

Here's what to do:

• Download

SAMSUNG_USB_Driver_for_Mobile_Phones in PC

Odin 3.13.1

Android 8.0 Oreo Stock Rom (ex. TUR-G935FXXS2ERH6-20180830145810)

twrp-3.2.3-0-hero2lte.img

SuperSU-v2.82-SR5-20171001224502 (not Magisk v 17.1!)

Remove Encryption.zip (not no-verity-opt-encrypt-6.0!)

(you can find all files on internet, believe in power of searching )

• copy SR5-SuperSU-v2.82 and remove encryption files into your SD card

• install SAMSUNG_USB_Driver_for_Mobile_Phones in PC

• take the phone to download mode (power + volume down+ home)

• get connected to PC

• Go to Odin, and flash the Stock Rom Oreo. Before you start, go to options and deselect F. Reset Time and Auto Reboot

• when the Rom flash is done, just hold power + volume down + home buttons to restart the phone. Keep holding the buttons to return download mode again!

• go to Odin again, click reset and now flash the TWRP recovery. Before you start, go to options and deselect F. Reset Time and Auto reboot

• hold power + volume down + home buttons, when your device screen goes off, fast switch the buttons to power + volume up + home to boot into TWRP recovery.

• go to Wipe and select Format Data. it will ask you to type yes. type yes and continue. you do this to remove encryption on your phone memory.

• go to reboot and reboot to TWRP recovery again! (you have to reboot to recovery coz you can’t reach /DATA when you do Format Data)

• go to install, and install SR5-SuperSU-v2.82 (not Magisk v17.1. Coz if you flash Magisk first, the root disappears after flashing remove encryption. If you flash remove encry first then magisk, it causes internal storage 0 mb issue) and Remove Encryption (not no-verity-opt-encrypt-6.0 coz it causes to internal storage 0 mb issue either).

• now restart your phone normally and let it boot up and do the first boot settings. That’s it.

in order not to take create TarFork() process ended with ERROR: 255 on TWRP backup change backup location to SD card. Coz its reason is not to be there enough space for storing backup files in internal storage.

bonus:

If you follow these steps Samsung Health works. So no need to do these instructions (I write them in case you need one day):

Follow the steps below to remove the S-Health block.

Download a root file explorer (such as Root Explorer, Root Browser or ES File Explorer).

Open the root file explorer and go to the /system folder.

Open the file named build.prop in text editor

In the build.prop file look for ro.config.tima=1

Change this line to ro.config.tima=0, simply changing the 1 to a 0

Reboot phone

Run the S-Health app

And private mode also works.

not: all information above is from internet. I only read many different suggestions and tried that I chose among them. I did discover nothing by myself. all the thanks belong to the people who have found solutions to these problems for the first time.

edit after two days:

I did exactly what I said above and I have been using my phone for two days without any problem. I checked if there's any problem like internal storage 0 mb issue, TWRP backup error, Samsung Health, Private Mode several times. There are no side effects.

I don't know the reason why Titanium Backup Pro 8.2.2 din't get installed even if I tried many times with different installation file. But 8.2.1 version installed. So don't insist on installing 8.2.2 version. There's almost no difference between these two versions.