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Error while checking the S.M.A.R.T. status of the Hard Disk

If OnyX detects a problem while checking the S.M.A.R.T. status of the disk, first verify that the startup disk is ATA or Serial ATA (which is the case for most newer Mac computers' internal disk). In OS X, this technology does not operate with FireWire and USB disks. OnyX cannot check the S.M.A.R.T. Status of a RAID Set or Fusion Drive.

1

If your startup disk is FireWire or USB, simply ignore this alert, and turn off the "Check the S.M.A.R.T. status of the hard disk at application opening" option in the preferences of OnyX (Advanced tab).

2

If your startup disk is ATA or Serial ATA and not a RAID Set, back up the hard drive immediately.

Note: If FileVault is turned on, checking the S.M.A.R.T. status will not be possible. If you turn off FileVault, restart the computer again before checking the S.M.A.R.T. status of the disk.

Related Topics

Check the S.M.A.R.T. status of the hard disk