Originally Posted by digitard
I just used one of these
It's just a Startech USB to SATA dock. Plugin the USB plugs into your new desktop/laptop, as long as your old HDD is SATA plug that into the dock. Mounts it like a USB drive.
I've used it for file transfer (HDD gone bad so I was pulling what I could onto the new one) and also used ACRONIS TRU IMAGE to clone a smaller drive into a bigger one as well when I upgraded.
Cheap and works for what I needed it for.
There are also other cheap SATA to USB adapters out there, but that one will definitely do the trick.
I feel like just about anyone with a PC should have one of these. I have 2, one for older IDE/ATA drives with external power and a USB 3.0 to SATA3 for newer drives.