It seems that you have a bad superblock. To fix this: Firstly, boot into a live CD or USB Find out your partition number by using sudo fdisk -l|grep Linux|grep -Ev 'swap' Then, list all superblocks by using the command: sudo dumpe2fs /dev/sda2 | grep…
dumpe2fs - dump ext2/ext3/ext4 filesystem information dumpe2fs prints the super block and blocks group information for the filesystem present on device. some information you can refer to https://linux.die.net/man/8/dumpe2fs-b print the blocks which a…