I've been experiencing problems with my HDD, so I ran a self-test on it. As you can see, the test failed, but all individual attributes are OK. How do I know what the problem is with the drive?


  • have you tried using the commandline to see if you can spot the issue? Other than that, the only thing that stands out there are the 3 "pre-fail" items. Check there for additional info.
    – ILMostro_7
    Jun 28 '21 at 6:50
  • Honestly, I'm pretty lost among all the drive-health related commands and how they work, so no, I didn't use any commands yet.
    – AstroRP
    Jun 28 '21 at 7:02
  • 1
    The top right line says self-test failed "(read)". This doesnt sound good. From the command line you can get fuller output with sudo smartctl -a /dev/sda assuming your disk is sda. You can also run another short self-test with sudo smartctl -t short -a /dev/sda. It runs in the background. It will tell you to wait, probably about 2 minutes, for the result, which is simply another sudo smartctl -a /dev/sda.
    – meuh
    Jun 28 '21 at 7:44
  • 1
    Please post sudo smartctl -a /dev/device output. Jun 28 '21 at 11:03

The most important factor is any (unspecified) problems, rather than the SMART stats. It's possible for a disk to fail, even though SMART says its almost perfect.

This is the time to make sure you have a backup of important data. You might consider the purchase of a SATA SSD and copy all your data to it.

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