Ide-scsi vs ide-cdrom

I am running red hat enterprise 4, and get the message that I should change from the ide-scsi device type to the ide-cdrom drivers. How do I change that operating option?

Normally, with Red Hat Enterprise 4, all IDE devices that are connected uses the ‘ide-cdrom’ driver by default. If it is not the case (check /proc/ide/hdXX/driver) then you should search for ‘hdXX=ide-scsi’ in your bootloader config files.

With Red Hat Enterprise 4, grub is used by default, so you can have a look in /boot/grub/menu.lst if I remember correctly.