I downloaded all of the Red Hat packages for 6.0 to my hard
drive and set up the directory correctly.  During the
install, everything went just fine until I got to the point
just before the system starts installing the packages.  I
believe this is the point where it mounts all of the drives
you specified to be mounted when you boot the system.  If
you happen to have the partition that contains all of the
packages in the list of drives you want to be mounted, the
program gives a "mount failed - device or resource may be
busy" error message, and won't let you proceed with the
install.  Generally, I have my system set up so that I have
a 4 GB partiton for /, a 4 GB partition for the /home, and
a 4GB partion for /home/ftp.  I usually keep all of my
files that I download for the distributions on my ftp
partition.  This was how I set these 3 partitions up in the
disk configuration section of the program.  In order to
work around this, I had to make sure that /home/ftp was not
a partion that automatically got mounted, go through the
normal install, and then manually edit the fstab file after
the system came up.