I will explain what happened:
I opened up terminal emulator then typed
cd /system/xbinls fsc* then
mount then my tab got stuck and then it switched off automatically.
Then I turned on my tab and again repeated the process the same thing happened but one change now it does not turn on, its stuck at boot logo. When I open recovery mode and check the system partition it says system mount failed. Trying to wipe
/data it says "mount /data error", for force format
/data it says "Formatting user data fail."
Please help someone