Speechless Two, there was a time when I experimented with BootMagic (From Powerquest - the makers of Partition Magic) and I should have added my reservations about that.
When I wanted to undo the Multiple Operating System Boot arrangement I had created, I couldn't get NT4's osloader to find the Boot Sector.
Salvation came in the form of a Boot Floppy with Norton Utilities which gave the option of reparing the Boot Sector of the HD.
I keep that little Golden Floppy Disk very handy now! But happily don't find I have to use it as I keep clear of BootMagic.