[root@localhost ~]# fsck /dev/hda1
fsck 1.35 (28-Feb-2004)
e2fsck 1.35 (28-Feb-2004)
/dev/hda1 is mounted.
WARNING!!! Running e2fsck on a mounted filesystem may cause
SEVERE filesystem damage.
Do you really want to continue (y/n)? yes
ext3 recovery flag clear, but journal has data.
Run journal anyway<y>? yes
/boot: recovering journal
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
/boot: 40/26104 files (10.0% non-contiguous), 15254/104388 blocks |