Needed the tutorial because my harddrive is failing, so I installed 7 on my new drive. I'm now booting Windows 7 on the new drive, but if I detach the old drive I get the boot missing error. I think it has something to do with the old drive still being the system as seen here in DISKPART. Thoughts?
E is the new drive boot partition, volume 2 is the old (and inaccessible from this boot) drive, and E is the new drive's main partition. Notice the boot partition is labeled boot but the old drive is labeled system.