Recently I've found that one of my hard drive are going to fail so I bought a new one yesterday. The OS hard drive ( It got a dual boot Windows 7 and Linux Mint, it will go to windows boot menu then the grub menu ) is healthy while the data hard drive is bad.
As I mean to unplug the bad hard drive after the backup, I just left the case open while I am doing the copying. I also unscrew my heatsink because it got into my way for the power cord. After I successfully connected my new hard drive to the PC, I didn't put the heatsink on the CPU.
I tried to boot it up without using the heatsink because screwing it is too much trouble, then it just died after some 10 seconds. ( I think it overheated )
So I put the heatsink back without screwing it because later I would need to re-organize the drives.
When I boot it up it said something about "unknown filesystem grub rescue>". I tried to select the OS hard drive on the boot menu manually but it got the same result. Finally I had to use my live linux usb to boot up the pc.
Does anyone got a clue? I had boot into windows just before I opened the case and it is working. Did I just corrupted my OS drive?