I have a customer with an older Time Capsule (500 gig) that has been having issues. Will attempt to perform a backup but after many hours, gives up the ghost with a vague error message (can't remember exactly right now). I have updated the firmware, deleted all the files on it, did a factory reset, etc and it still has problems. I am thinking the hard drive so I did a 1 pass secure erase of the Time Capsule and it got to about 15 percent complete and then just sat there and never got any further, and this is after waiting for 2 days. I started it on Sat morning and today, Mon morning, its still at the same spot. We have not gotten any errors specific to the hard drive failing but it still is acting like a dying drive. How can I perform a thorough disk test that will 100 percent point to the bad hard drive? The Time Capsule is completely empty at this point and he does not need ANY data from it.