Installing Windows after Mint on external USB Drive

[funkytwig]

Hi, a mate of mine has a laptop with mint installed. He has some windows programs he want to use (games, wine not a goer for these games) so the plan is to install windows 7 on a external USB drive. Can I install Windows on the external drive without it overwriting the internal drove boot sector (which would mess everything up)? We would then boot from external drive by going into the bios boot menue (press f9) and select boot from USB. This would mean that we could boot from linux in the normal way if we did not go into bios boot menue.

Would this work OK? Would there be any issues when we did windows updates?

Ben