How To Fix Unable to mount /system on Samsung Galaxy Core GT-I8262

This video Is About How to fix the TWRP recovery error ie. Unable to Mount /system (invalid argument) that is occurring to most of the users while flashing roms after modifying the system partition First i have Demonstrated the problem then the fix for it A BIG THANKS TO XDA Developers XDA Post Link - https://forum.xda-developers.com/galaxy-core/general/video-fix-unable-to-mount-installing-rom-t3573831