What can cause bad blocks in two different hard drives?
September 19, 2007 11:06 AM Subscribe
Two hard drives in a row have developed bad blocks. What could be causing this? Heat is not an issue.
posted by Yogurt to Computers & Internet (10 answers total) 2 users marked this as a favorite
My new big hard drive developed bad blocks within 40 days. I returned it and went back to my reliable small hard drive, which I've used for over a year. Now it's developed bad blocks too, only a week later.
There's no other new hardware. The motherboard and power supply (which I regard as possible suspects) are the same ones I've used for 2 years.
The motherboard and hard drives report temperatures between 33 and 39 degrees C, which is why I doubt heat is the problem.
Electrical supply? The computer is on a UPS. Another computer shares the same UPS and has no problems.
Cat? The computer is in a new location and it's possible my cat has jumped on the computer, rocking it while it's running. I've now taken steps to avoid this.
Coincidence? The bad blocks on the smaller drive seemed less severe than the ones on the big new drive. The big drive made clicking sounds, had SMART failures, and couldn't run CHKDSK. The small drive just showed bad blocks in the Event Viewer and screwed up a torrent download. CHKDSK seems to have fixed/remapped the bad blocks (although I don't actually know if CHKDSK found any problem, because I left it running overnight). I still plan to replace the small drive, if only because it's small.
Software? Is it possible for software to cause bad blocks or false alarms of same? I was running a SMARTDefender extended test while using uTorrent, which was the first program to complain about a CRC/bad block error.