mint@mint ~ $ sudo fsck -y /dev/sda6
fsck from util-linux 2.20.1
e2fsck 1.42.9 (4-Feb-2014)
/dev/sda6 contains a file system with errors, check forced.
Pass 1: Checking inodes, blocks, and sizes
Pass 2: Checking directory structure
Pass 3: Checking directory connectivity
Pass 4: Checking reference counts
Unattached inode 3501052
Connect to /lost+found? yes
Inode 3501052 ref count is 2, should be 1. Fix? yes
Pass 5: Checking group summary information
Block bitmap differences: +14979122 -(23134919--23134935) -(23138440--23138441) -23138518 -(23138526--23138534) -(23140445--23140450) -(26520116--26520119) -(26529814--26529817) -26920937 -26933984 -26935854 -26938187 -26955446 -26955614 -26989932 -26990703 -26990755 -(26990760--26990762) -26990768 -26990770 -(26990780--26990784) -(26990786--26990789) -26990791 -(26990793--26990794) -26990802 -(26990808--26990810) -(26990815--26990820) -26990823 -26990826 -(26990828--26990830) -26990838 -(26990844--26990848) -26990852 -26990862 -(26990886--26990887) -26990927 -26990939 -(26990957--26990958) -26990963 -26990968 -26990970 -27012175 -27012186 -27012188 -(27012194--27012195) -27012327 -(27012356--27012357) -(27012359--27012360) -(27012362--27012363) -27012367 -27015189 -27015191 -27015200 -27015218 -(27015221--27015222) -27015224 -27015256 -27015346 -27015517 -27015585 -27015590 -27015604 -27015791 -27015797 -27016040 -(27016097--27016100) -27016142 -27016157 -27016165 -27016169 -27016172 -27016230 -27016233 -27016238 -(27016502--27016503) -27016527 -(27016536--27016538) -27016728 -27016906 -27017518 -27017619 -27017647 -27034537 -27034543 -27034586 -27034592 -(27039987--27039988) -27440875 -27450763 -27450965 -27450971 -27450976 -27450992 -27451044 -(27451176--27451177) -(27579405--27579406)
Fix? yes
Free blocks count wrong for group #457 (2, counted=1).
Fix? yes
Free blocks count wrong for group #706 (31708, counted=31743).
Fix? yes
Free blocks count wrong for group #809 (0, counted=8).
Fix? yes
Free blocks count wrong for group #821 (1, counted=3).
Fix? yes
Free blocks count wrong for group #822 (0, counted=4).
Fix? yes
Free blocks count wrong for group #823 (0, counted=52).
Fix? yes
Free blocks count wrong for group #824 (0, counted=52).
Fix? yes
Free blocks count wrong for group #825 (215, counted=221).
Fix? yes
Free blocks count wrong for group #837 (150, counted=159).
Fix? yes
Free blocks count wrong for group #841 (91, counted=93).
Fix? yes
Free blocks count wrong (3943276, counted=3943445).
Fix? yes
Inode bitmap differences: +3501110 -(5783606--5783616) -(6627404--6627405) -6725988 -6728302 -6734925 -6734927 -6735310 -6735332 -6735394 -6735396 -6858192 -6858337 -6861007
Fix? yes
Free inodes count wrong for group #427 (5067, counted=5066).
Fix? yes
Free inodes count wrong for group #706 (8128, counted=8139).
Fix? yes
Free inodes count wrong for group #809 (8113, counted=8115).
Fix? yes
Free inodes count wrong for group #821 (1928, counted=1930).
Fix? yes
Free inodes count wrong for group #822 (6559, counted=6565).
Fix? yes
Free inodes count wrong for group #837 (3820, counted=3823).
Fix? yes
Free inodes count wrong (7459954, counted=7459977).
Fix? yes
/dev/sda6: ***** FILE SYSTEM WAS MODIFIED *****
/dev/sda6: 592759/8052736 files (2.5% non-contiguous), 28262771/32206216 blocks
mint@mint ~ $