I agree with blobrana. I have such a setup even between OS3.9 and OS4beta partitions on one machine. I also have bootable ZIP disks with system restore stuff on them, which boot at a higher priority than any of my HD partitions do, so they take over when placed in the drive at boot time. This has come in handy like crazy a number of times. Why use a boot program when you can kickstart's early-boot-menu to choose which partition to boot from?
