You just finished installing that brand new distro.
It's time to check those other OS's,see if they load OK.
You hit "reboot" amd run for the coffee pot.
You hurry back to choose an OS and ......
???HEY???? What happened to SUSE ? Where's Gentoo ?
Slackware's gone too !
 
Don't despair , it's time for "UBUNTU to the RESCUE ."
 
Problem ; Multiple OS's installed on the same drive, just
different partitions.
There is a good chance some distros ,like Mandrake, will
only list the first OS it finds on each HD.
Others ,like Mepis, sometimes like to think it's the only
OS worth mentioning.
 
If you set up a logical drive for each OS on a hard drive,
almost all distros would probably find them all.But , hey,
how many of us actually take the time to do that ? Not to
mention the noobees that don't know how.
 
My solution:
Well,since I'm not good at editing MBRs, I keep a few gigs
free on at least one HD and a UBUNTU install disk handy.
I just install UBUNTU and so far it's found every OS on
all drives and added them to the boot list no matter how
the drives are set up.
 
There are probably a few setups that can stump UBUNTU but
I haven't found them yet.
 
Hope this helps somebody.