Important: Don’t do this if you use journaling file system.

I use both Centos 4 and 5. To enable automatic filesystem check after unclean reboot, do these commands (as root):

echo "AUTOFSCK_TIMEOUT=5" > /etc/sysconfig/autofsck

echo "AUTOFSCK_DEF_CHECK=yes" >> /etc/sysconfig/autofsck

According to this article,  you won’t require it if you use ext3 (as in my case). You will lose some of your data if you do so.

Credits:

• http://lists.centos.org/pipermail/centos/2006-November/072253.html
• http://www.brunolinux.com/04-The_File_System/Auto_Fsck.html