Changing boot disk drive letter

Archived from groups: microsoft.public.windowsxp.configuration_manage (More info?)

I have recently acquired a new disk drive and have loaded
XP professional on it and numerous programs over the past
month or so while still keeping XP home on the 'C' drive.
I now no longer want XP Home and have changed the 'C'
drive to 'J' losing access to Home as a result.

I now want to change the XP Professional drive (the boot
drive for XP Professional) from 'F' to 'C' - as you
know 'C' is often taken as the default, normally includes
boot.ini etc etc. I have read Q223188 but this doesn't
help - can anyone direct me to the proper detailed
instructions to do this as I do not want to start all
over again.

Thanks