We had a SATA3 drive that was performing poorly and making noise, and installed Windows 7 onto a new drive. The install went well, but left the bootloader on the old drive, and so I could not remove it; Windows treated it as a multi-boot system with a new boot option on the new disk. Everything worked, so I figured I'd have time to fix it. Well, the old drive died a few weeks later and now I have no idea how to address this.
How can I instruct the PC to boot to the new disk, when there isn't a bootloader present on it? Do I need to reinstall Windows from scratch? From looking at the board specs, it supports UEFI, I am unsure if this is relevant.
EDIT: I've been able to get the original boot drive running. That drive has a 100MB EFI partition, can I simply resize the new disk to add a new partition at the beginning of the drive, and copy it there?