reverse OS and System drive letters without reboot?

Posted this twice to "alt.os.windows-xp", and received only 2
responses that were so far off it was obvious they misunderstood or
misread my post.

Whether difficult or easy, recommended or not (I have multiple good
backups so experimenting is no problem), if you have an idea, or
solution, please share it.

Thanks,
Larry

"1966olds" <news.20.1988@spamgourmet.com> wrote in message
news:a8a344de.0406141549.3127d7d0@posting.google.com...
> Hi,
>
> Currently have a multi-boot system, with (among other OS's) 3 WinXp
> partitions (one on each Hard Drive), set up as follows:
>
> Disk 0 Disk 1 Disk 2
>
> (C) WinXp-A (2300MB) (*)WinXp-B (*)WinXp-C
> (J) WinXp system (50MB)
>
> Each WinXp partition is designated as "C" and am using Powerquest's
> BootMagic 7.0 to select one at boot-up, with the other two remaining
> hidden. The "J" system partition contains only a few files (boot.ini,
> ntloader, NTdetect, as well as the reovery console files).
> Actually...bootmagic is loading the system partition first, and then I
> have to select which Windows partition to use from the multi-boot
> screen.
>
> My question is this.... I would like to reverse (or change) the
> letters. Make the system partition the "C" partition and the Windows
> partitions some other letter. I have successfully changed assigned
> letters for the system partition (Using Partition Magic) and for many
> other situations without a hitch, but cannot seem to find a way to
> change my configuration as described. Would like to change to THIS:
>
> Disk 0 Disk 1 Disk 2
>
> (J) WinXp-A (2300MB) (*)WinXp-B (*)WinXp-C
> (C) WinXp system (50MB)
>
> Is there a way to do this WITHOUT RE-INSTALL? I had given up, but when

Set ACTIVE on the boot partition you want to boot from and remove
ACTIVE
from anything else.