(Common to both Red Hat and Slackware distributions)
The last thing that needs to be done before rebooting is to create the fstab file on the soon to be root partion. The following is what you should have as a minimum for /iomega/etc/fstab:
/dev/sda1 / ext2 defaults 1 1
/dev/sda2 none swap sw
none /proc proc defaults 1 1
(Special thanks to Mike for reminding me about this very important and crucial step. - John)