$ sudo LC_ALL=C e2fsck -f -C 0 /dev/sdb2
[sudo] password for eugen:
e2fsck 1.42.5 (29-Jul-2012)
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Pass 5: Checking group summary information
Free blocks count wrong (142003, counted=141977).
Fix<y>? yes
Free inodes count wrong (41658, counted=41659).
Fix<y>? yes
SliTaz: ***** FILE SYSTEM WAS MODIFIED *****
SliTaz: 9637/51296 files (0.2% non-contiguous), 62823/204800 blocks
let's reboot