If you happened to buy the last issue of Maximum Linux magazine, the
issue that had the Mandrake and Stormix CDs, make the "install" floppy from
the Stormix disc. Boot this floppy and tell it where the Mandrake root
partition is on your hard drive (the partition that you want to boot from);
it will then boot that particular Linux. I can boot Caldera (on hdc1),
Stormix (on hdc2), or Mandrake (on hda6) [but I normallly use my Mandrake
floppy to boot Mandrake]. I have these other installs specifically so that I
have something that I can play with, screw up and reinstall without messing
with Mandrake.
Go can also go to http://www.toms.net/rb and download a DOS copy of Tom's
root-boot. This will allow you, through MS DOS, to create a self-booting
Linux floppy. The intended use is to allow you to log to your own damaged
file system or do other serious system repair, but from what I've read on
Tom's documentation you should be able to log to Mandrake and run LILO to
restore dual booting on your system.
-Gary-