Is there anyway I can test the HDD's in my mk2a player other than the disk builder

I keep getting no drive found. I got a new cable and after installing that the player worked for about a week now the problems have started again. I have tried 1.03 and 2.07. I have also checked the cable numerous times usually if I play with it for a while the player will start working again for a while but the problem keeps comming back.

I have the 12 gig drive that came with and I have added a 20 gig travelstar (mounted on spacers)