Filesystem did not have a UUID; generating one. Pass 1: Checking inodes, blocks, and sizes The primary superblock (1) is on the bad block list. If the block is really bad, the filesystem can not be fixed. You can remove this block from the bad block list and hope that the block is really OK. But there are no guarantees. Clear? yes Block 2 in the primary group descriptors is on the bad block list If the block is really bad, the filesystem can not be fixed. You can remove this block from the bad block list and hope that the block is really OK. But there are no guarantees. Clear? yes Pass 2: Checking directory structure Pass 3: Checking directory connectivity Pass 4: Checking reference counts Pass 5: Checking group summary information test_filesys: ***** FILE SYSTEM WAS MODIFIED ***** test_filesys: 11/32 files (0.0% non-contiguous), 22/100 blocks Exit status is 1