please can anyone tell me how to mount/load my old HDD (which I have just taken out of my machine) as bootable USB drive. I basically want to be able to boot from my old drive instead of the newly installed drive. I don't want to have to remove the new drive and put the old one back in, just to access a couple of files. I have put the old drive in a USB caddy and set the boot sequence to USB first, but, when I try to boot it gives me the message "No boot sector on USB device" then proceed to boot from the internal HDD.
Help with this is greatly appreciated.