Installing 3 distro's on same drive.

[Johan Scheepers]

Good day,

If I intend to install 3 distro's on one drive, but would like to find 
out if it is possible / feasible ?

Make 4 partitions on drive.

Should they be all primary. I understand linux can handle that?

For instance..

First partition..        Ubuntu
second partition..    Fedora
third partition..        Centos
fourth partition..      Swap.

Now..should I install them in that sequence then Centos would control 
the MBR ?

So now what happens when ..  say I replace  any of the first 2 with 
another/later distro ?

What can be done should the MBR go bad to boot the distro'S.

Some advice will be appreciated
Thanks
Johan S