multi-boot

Infopackets Reader 'Sprenger' writes: " Dear Dennis, I have four hard drives in my PC and four different operating systems. My main hard drive has Windows XP, then my second drive has Vista Ultimate, the third has Windows 7 Ultimate, and the fourth ... has Windows 8.1. I want to get rid of the Windows XP drive, but if I disconnect it, none of my other hard drives will boot. What should I do? I prefer to have Windows 7 as the default operating system. I want to avoid formatting all my hard drives just to get them working again. Any suggestions? " My Response: It sounds like your Windows XP drive ... (view more)