I recently made a huge mistake to install my optibay before installing Bootcamp on my second drive. Now I have everything set up, I dont want to go through the hassle putting it all back together. Now on my old 500GB HDD, I still have my OS X 10.7.4 and Bootcamp. If I use this bootcamp (which works fine) via USB, would this affect the performance? For example, if I run heavy apps, would my Mac have trouble running them? I never really ran OS via USB so Im not clear here. I always thought USB would only affect transfer speed but would this affect the performance? I do want to play some games on here but on VMware Fusion, too heavy. If I run BC through USB and play heavy games or heavy apps, would this still cause the lag? Thanks. EDIT: Wow, huge mistake here sorry. I tried booting BC on my external HDD and it wouldnt even show up on the list... Is it really impossible to boot any Windows from USB?