I'm attempting to load Windows 7 onto an external hard drive in order to boot from the hard drive whenever I play games. I originally split my internal drive to make a Mac OS side and a Windows side, but both sides quickly ran out of room and performance suffered.
In summation, I want to host the windows machine on the external drive, instead of the internal one. I have tried several tutorials, but none have proved successful. The most successful was this one (http://bleeptobleep.blogspot.com/2013/02/mac-install-windows-7-or-8-on-external.html) but my computer did not offer my external drive as an option to boot from when I restarted.
Mac OS X Lion 10.7.5
Seagate Backup Plus Portable Drive (1TB)
Access to a Windows Vista PC if that helps