Booting From Secondary Hard Drive

[MichaelZZ]

When I bought my new Win 7 desktop PC last July I installed by SATA the hard drive out of my old Win Vista PC.
The new PC boots up to Win7 and runs files etc on both drives (C: & F:) quite happily.
I now would like to run a program (SIM Editor) which ran perfectly fine on my Vista PC but won't run even in compatibility mode on Win7.

Is there a way that I can temporarily force my PC to boot to the F: drive and thus run my SIM Editor program. I need to clone a Sim card for a friend.

[Old_Geezer]

If it is a system disk you can go into the CMOS/BIOS menus and change the primary boot disk.