E:failed to mount galaxy j7 j710f?

[Diash]

E:failed to mount /data (Invalid argument) can't mount '/data' (Invalid argument)

E:failed to mount /data (Invalid argument)

E:Can't mount /data/log/recovery_log.txt I can't reset my phone..

 

above error come to me.. what to do now?

[Romain77]

your phone may be damaged now, So, I think that You have to install Stock Rom again.  your phone will not avoid warranty. Stock Rom is default and official Rom. – Stock Rom.

But, some cases, we don't want to install Stock Rom again.. If we can force reset Samsung phone. then it will settle. So you had better try to reset from PC before flashing..