I want to add my thanks to Gradius, Aviko and AlexLilic !!!!! Without your excellent advice I would still be swearing and cursing. There were a few confusing parts, and definitely a few heart stopping moments, but my drive is now alive, and my data safe. For anyone else going to give this a go then I totally recommend the FTDI TTL-232R-3V3 USB Cable. This was a very simple cable to use following AlexLilic wiring directions (on page 35). The ideal part about this cable is you don't have to play around with any additional power (battery or mains). For those in the UK I got mine from FTDI TTL-232R-3V3 USB . Outstanding service as this was posted to me the same day !! Note: You DO need the standard SATA power cable connected to the disk drive. (This confused me for quite a while) I used a spare power lead from another PC. This also allowed me to easily turn on and off the power to the drive. For those with a disk set up like mine I had the jumper over the 3rd and 4th pins on the disk. I had to take this off so that I could connect the ground cable. As soon as I did that then the "F3 T>" prompt. Also note that as I only used the single card under the drive spindle (the one at the centre of the disk) it means YOU MUST TURN OFF THE POWER TO THE DRIVE (i.e turn off the SATA power supply you connected to the disk) before you issue the Partition regeneration "m0,2,2,,,,,22" command. Gradius clearly mentions this a number of times, but I noted a few others have missed this step. I missed this the first time, but maybe got lucky and now have a working drive As an additional item, I also had trouble updating the firmware. I was getting an error on booting from the CD. I had to turn off the RAID support within the BIOS. After that everything worked and I managed to update to the latest firmware. I can only hope that this fixes the problem for good.