I found that the RedHat 6.1 installer fails in a multitude of ways when I try to install on a machine with both IDE and SCSI hard drives, where the SCSI drive is the boot drive. First, Disk Druid. In the graphical installer, even when /dev/sda is given as the only disk I want to allow / on, it still gets put onto /dev/hda. this is wrong. Second, when installing LILO, the installer only gives me the options of installing on the MBR of /dev/hda, or on the first partition of another drive. There is no way for me to install to the MBR of /dev/sda from the GUI installer. This is wrong. LILO also loses whn Linux knows about hard drives that the BIOS was told to ignore (because it wants the BIOS ID number), but LILO is a festering pile of dog droppings and I don't really expect you to fix that. I do suggest possibly replacing LILO with GRUB, a friendlier (and more maintainable) boot loader, however. I've submitted this with severity normal as most people with this sort of setup know enough about linux to bash the installer into submission. --Jered jered
The best way around these issues is to perform an expert install, using fdisk to partition the drive, which will allow you to put the root partition and /boot partition anywhere that you wish. Once this is done, lilo will allow you to install to the MBR os sda.