Booting into rescue mode from the RH6.2 CDROM, it is not possible to
mount a system's filesystems because the /dev directory lacks device nodes
for the hard drives. It also lacks MAKEDEV and mknod, the utilities
that would allow the creation of device nodes. This generally renders
the rescue mode useless since it doesn't allow the system being rescued
to be accessed.
just type "mknod /dev/hda" and you get a /dev/hda node
just type "mount /dev/hda1 /mnt/sysimage" and all the devices and mountpoints
are made for you.