- did the drive power up while in the DVR?
- I assume from your post your PC uses a sata connector also?
- I assume you are using the power supply from your PC to power the hard drive?
- I assume you are running the PVR program that is needed to read and process the files on the DvR hardrive as a windows OS will not recognize a Linux OS?
I can give you a few suggestions on how to possibly get the drive to spin up removing some diodes if you have confirmed that when powered properly it does not spin up?