Just got a question. My hard drive was failing in my 5900 the unit was freezing and grinding everytime I went to record something. I purchased a replacement drive off on ebay that was stated as a pull from a 5900. its the same size and the code RAMB1TUO is the same on both drives. When I installed the new drive I get error 0412. I then went to format the drive and it stated the drive was re initialized and I need to restart the box. I do that and get the same error. I then tried to run a HDD short diagnostics and it fails. Does that mean there is a problem with the HDD or is there some way I need to marry this thing with the box or initialize it to work or whipe the drive clean and let the box write to to. Any help would be greatly apprecaiated.