Aye-eye-X.
For multiple OS-es I love the 'System Commander' product. They used to be
http://www.v-com.com, but their name has changed to
www.avanquest.com. The latest version is
System Commander 9. They will clearly document things like 'this OS must be installed in first 1.5 Gb of disk space', or 'this OS must boot from within the first 1024 cylinders/tracks', or cannot install/boot this OS from an extended partition.
I've used this off and on for ten years, probably have three of the last five versions of it. On an older desktop PC, I at one time had 6 or 7 different OSes setup to boot (had about 12 partitions across 2 EIDE HDs) , including linux, windows (NT 4.0, 2000, XP and a server), one version of QNX and a DOS version. All just to see if it worked, and it did! I still have the older boxes and *printed* instruction manuals, just to look at the lists of older and lesser-known operating systems they mention.
Some of the detailed writeups describing early linux distributions (1999-2000) are still good reading.