[hovatek]

The extractTarFork() process ended with ERROR: 255 is one error you might bump into in TWRP custom recovery, especially when you're trying to restore a backup. This is usually as a result of a mount problem with the userdata partition.

Steps to fix extractTarFork() process ended with ERROR: 255 in TWRP

If you encounter this error while restoring a TWRP backup then follow the steps below

1. Return to the TWRP Home Screen and select Mount
   
   
   
   
   
   
2. Untick Data
   
   
   
   
   
   
3. Go back and try restoring the TWRP backup again
   

Important Notice

• Try doing a fresh backup and restoring to be certain that the error is from the previous backup (which you need to restore) and not from a mount point error
  
• There's a good chance that the userdata fix doesn't work for you so try the same fix on other partitions
  
• If the error persists then consider creating a flashable zip from your TWRP backup. Getting the mount points right (in updater-script) is crucial
  

[kimuy]

Same results

[hovatek]

Same results

Could you explain a little more

[alexandro]

it doesnt work..

[hovatek]

it doesnt work..

What phone model?

[Sohan Bhatt]

upon unticking data there is no file to restore . twrp will show backup only if i tick data?
please help

[hovatek]

upon unticking data there is no file to restore . twrp will show backup only if i tick data?
please help

The problem is likely with data in the TWRP backup. Try restoring the backup without data and see if the error persists first