Why cant i boot off an iso image on a disk partition

alivefish

Honorable
Dec 16, 2012
2
0
10,510
Hello,
I bought an ultrabay for the lenovo laptop and plopped a second drive in. The point was to basically load other operating systems on it, blow away, reload... I formated the new drive into 2 partitions using diskpart, made part 1 active. Copied the iso image (trial w2kr8 iso) from the primary hard drive over to the new formated active partion... Reboot, BOOTMGR missing.
Can I just copy any random boot files over to the disk ~ beside the image file, and boot away? I have Roxio business edition, but why does the "make bootable" option gray out whenever you select a phys disk partition instead of a DVD...? Just want to boot an image from a real disk without jacking around with cd's...