You should add in the menu.lst something like:
title Red Hat Linux (2.4.18-0.12)
root (hd0,0)
kernel /vmlinuz-2.4.18-0.12 ro root=/dev/hda3
initrd /initrd-2.4.18-0.12.imgDepending on the location of the Linux OS and the version it may need some editing. It's also very important to know that only the Solaris GRUB bootloaders can be used to boot Solaris. If I'm correct (Sun is aware of this problem), other GRUB bootloaders won't work unless you chainload. This message posted from opensolaris.org
