Okay, here we go.
I'm not going to tell you the reason for this so don't ask

Would it be possible to have a backup OS on a separate HD in case you "test" and stuff with your OS? Like if you break one, you can plug in the other HD and it will boot off that? (XP)
I'm pretty sure that BIOS names drives differently than XP does (seperate names) so here is a guide to make it more simple:
C: Operating system \ partitioned (same physical HD) Cable one (master)
E: Games /
D: Backups Cable two (?) (usually totally removed.)
G: Spare Cable two (?)
F: DVD/CD Cable one (slave)
Here is what I want to know if it works:
1) install XP on C: partition
2) unplug C:
3) install XP on G (keep the same cables)
4) unplug G:
5) plug in C: (same cable as displayed above chart)
6) boot off C:
7) use until something happens
eight) something happens to degrade performance
9) remove C: drive completely (also E:)
10) move G to the Cable one master spot
11) boot off G (G is now C2)
12) put C into Cable two ? slot (C is now G2)
13) format G2
14) do whatever
I would like to know if this will work before I do it, please

thank you!