Yes,
don,t forget the XP-CD.
Alternatively you could also use a Partition Manager.
Then booting from the OS-CD, installing .... voila. The HD should work.
Maybe you could also try a NTFS R/W program, make a bootdisk and remove
the P4.sys file with the p3.sys file.
O.K. just a joke. No, I think using a P4 XP installation with a P2/3
system is not easy to realize. I also tried a AMD Athlon installation
on a P3 and it wont boot.
Only solution I have in my Mind is: Making two Partitions on the HD.
One for P3 (C
and one for P4 (D
When using the P3 install XP on C:
When using the P4, set the BIOS Boot drive to D: and boot.
!!! I would suggest first making the D: and then the C: ... I mean
leaving the C: Partition (physically at the beginning) free, Installing
with the P4 (BIOS set to D
XP on D: (The system will it show as C
,
and then afterwards installing XP with the P3 on C: (BIOS on C
, or
vice versa.
I think when the C: drive is formatted when installing with the BIOS D:
trick, the XP kernel avoid the BIOS Settings as it is phisically on the
disk. So you should not format c: (just make a partition), just D:
should be formatted first, then installing OS with boot drive D: on.
Then format C: with the system you have now on D: (XP shows C
change
the HD to the other PC, leave BIOS Boot on C: and install. with the
BootCD, off course.
Changing the BIOS to Boot D: will not make you, then, any problems in
the future. I think just the setup of XP changes the BIOS setting but
when it is fully installed you will not see a difference.
Maybe there a are more solutions, Boot Manager etc. etc,....
Good Luck!
Best Regards,
Daniel Mandic
P.S.: Two small Boot Partitions (1-2GB each) should be enough, and the
rest of the platter (E: or F: and more) for both systems.