Dual Boot - Re-install lower version OS

[patkim]

I have dual boot system
C: Primary Active – Win2000
H: Primary – Win XP

For some reasons if I wipe out Win2000 and re-install the same, will I lose WinXP.
I shall be selecting C: as partition where Win2000 be installed during setup and later manually update boot.ini accordingly to configure dual boot menu.

[Gecko]

You will want to read Microsoft article first.