Pam Astor wrote: > Hi Guys, > > I'm fairly new to Linux and I'm trying to un install a hard drive from my Centos 5.1 box running KDE. When I built the PC, I installed two 500 gig maxtors in the tower, then I installed Centos. Now I've decided that I want to remove the slave drive and use it as an external backup drive - I am mounting it into one of those external drive cases with a built in fan. > > When I physically removed the drive and restarted the PC, centos would not boot up and went into a kernel panic. I'm sure I'm supposed to somehow unmount the thing before I do this, and that's my question - how do I un-install the hard drive - software wise - so that on next boot up, centos don't go crazy looking for it? > > run # mount this will show the mounted partitions. find the partitions that are on the second drive and unmount them: # umount /path/to/partition if a service uses them, you'll see an error. you will need to fix the errors until you can unmount them. then comment out these partitions in /etc/fstab.