I have a clicking external Seagate Goflex hard drive. I'd like to connect it as an internal sata to see if I can recover some of the data. I already have two pata internal hard drives on my computer. Can i hook up a third drive? If so what do I do after I connect the drive, have never used a sata in this computer? Thanks.
The number of drives is determined by the number of SATA/PATA ports on your motherboard. For PATA, it's usually two IDE channels with two devices per channel, thus four PATA devices. SATA ports are 1:1, so one port per drive.
If your motherboard only has PATA connectors, you will need a SATA/PATA converter to hook up that external drive internally.