Dont bother using KDE / GNOME or any other X window system to finish RAID installation as explained above. Use simple text terminal.
You can press Cntrl-ALT-Fj to switch to ttyj where j=1,2,..6
If you do start KDE/GNOME or any other X window system, it will run on tty7, which you can access by pressing Cntrl-ALT-F7
If you decide to use Promise supplied SCSI emulation driver for FastTrak RAID, note that you are stuck at the default kernel version 2.4.18-3. Because, no source code for FastTrak is available.
During Red Hat installation, choose ext3 and swap file types only.
When you remove Promise SCSI emulation and setup Native Linux RAID, linux lets you access the hard disks either by mirror name: d0 or individual disks themselves: hde2, hdg3 etc. It is very important that: YOU NEVER access the hard disks directly by their name, instead access the corresponding mirror partition. Example: Use /dev/ataraid/d0p3 instead of /dev/hde3 or /dev/hdg3