I have a WD Elements drive that I use for Time Machine backups, I used Disk Utility to verify the disk, it found errors and I tried repairing it, which failed, so I reformatted the drive and it appears to be working for now... However when I attempt to verify the disk again via Disk Utility, it quickly spits back a response stating that everything is fine.

I am looking for SMART testing software that thoroughly tests the drive for errors. I checked out the downloads that WD offers for this drive but they only have this sort of diagnostic tool for Windows, whereas I need one for Mac OS X Lion. Every SMART diagnostic tool I have come across states that it supports Leopard/Snow Leopard.

Can anyone help me out here? Thanks in advance.

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Here's a couple tools that I've used for SMART on OSX Lion, both of which will do at a minimum SMART tests. The second is a full suite, of diagnostic and optimization tools.

  1. General SMART utility - Smart Reporter

  2. Full featured disk repair utility - Drive Genius 3

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