Two OS's on separate drives, gives you the security of having access to your machine, if one of them dies.
It would take, a mobo, memory, ,gpu, or psu to keep you down, with no access.
One lean and mean just your peripherals for gaming and that's it.
The other for all other things.
That I do is I partioned my drives, as I wish.
Then set up the first OS for gaming.
I then ghost/clone it, then change my desktop picture to something I like for gaming/flying.
Then I install that ghost into another drive.
Once that's done, I should have two identical installs short the different desktops.
I then boot up the first install and rewrite the master boot file.
I'm still XP and Win7 dual booting
Actually mine is triple boot still, I've still not totally embraced Win7
here is the original dual boot XP stuff.
And at the moment they are both on the same drive, my spare died, and I put it all on a terabyte drive till I get another.
Now my Win7 ties into this somehow, but it did it automatically.
If you do a XP win7 make sure XP is installed first.
this will take some research unless one of the guys here already knows the answer.
Well I managed to open the BCDEDIT.exe
But not informed enough to know what I'm doing yet.