To boot Red Hat Linux from MILO, you must use the boot command. The command differs slightly depending on where your root partition is. For example, if your root partition is the second partition on your first SCSI hard drive, you would boot as follows:
boot sda2:vmlinux.gz root=/dev/sda2
If instead your root partition is the third partition on your second IDE drive, you would use this command:
boot hdb3:vmlinux.gz root=/dev/hdb3
For information on these commands and on automating the boot process, please read the MILO HOWTO in Appendix D.