On Thu, 2002-09-05 at 07:48, Kristi-Rheem wrote: > The only use I have ever had of this command, is what the computer > told me to do. We have two Hard drives (c0t0d0s3 & c0t2d0s3). Should > I be running fsck on both? > > We tried this morning (the fsck on both disks). > It says that both drives are mounted do you want to > continue? and we said Yes. The second hard drive runs > fine, but when it tries do do the fsck on the original > hard drive (the c0t0), it says I can't do part of hard > drive because it's mounted. Should I unmount it, and > if so, how would I go about doing that??
fsck and disk-checking is a pretty deep topic and details will be OS-specific. You should really ask this on one of the Linux newsgroups. fsck works by manipulating the raw disk data, so it's unsafe to use on a "live" filesystem. You need to boot from a rescue disk so that the partition is not in use. Or boot to single-user mode while any partitions (like root) are still mounted read-only.
