How To Repair Smart Status With Diskwarrior

Check Hard Drive Health on a Mac & Repair Errors Information technology'south a proficient idea to check the difficult bulldoze health of a Mac as function of a periodic maintenance routine. Doing this is extremely easy with Deejay Utility, and we'll comprehend exactly how to verify hard disks, how to repair them, and what to do if you run across any bug or errors in the process. This works for all hard drives, whether it'southward an internal drive, an external drive, or a boot deejay, though the process is slightly unlike for kicking drives. Permit'southward begin.

Checking Hard Drive Wellness on Mac

The outset thing you'll desire to practise is check the difficult drive health, this is done with a procedure called verification, and it'south quite uncomplicated:

Launch Deejay Utility, found within the /Applications/Utilities binder
Select the Mac hard drive from the left side carte du jour and click on the "First Aid" tab
Click on "Verify Disk" in the lower correct corner and permit it run

You lot volition observe the window populating with messages about the drives health, messages that bespeak things are fine announced in black, messages that indicate something is wrong appears in red. Deejay Utility should resemble something like the post-obit screen shot:

Check Hard Drive health of a Mac with OS X Disk Utility

For the vast majority of users, what you run into volition look something like this, finalizing with a message of "The partition map appears to be OK", indicating that no errors have been found:

Verifying segmentation map for "Apple Media"
Checking prerequisites
Checking the partition listing
Checking for an EFI arrangement partition
Checking the EFI arrangement partitioning'due south size
Checking the EFI system partition's file system
Checking all HFS data sectionalization loader spaces
Checking Core Storage Physical Volume partitions
The partition map appears to be OK

If you do run into a red message maxim something forth the lines of "Mistake: This deejay needs to be repaired" yous can simply choose to click the "Repair Disk" push button to start that repair process, that will work for whatever internal or external drive – unless the drive in question is your boot disk, and then you will observe the "Repair Disk" button is inaccessible. That doesn't mean you can't repair the boot bulldoze though, it just requires an boosted step which we'll cover side by side.

How to Repair a Boot Disk with Disk Utility

In this example all you lot demand to do is reboot into the Recovery HD partitioning and run Repair Disk from there, here'southward how to do that in Modernistic MacOS versions including macOS Sierra, High Sierra, Mac OS 10 El Capitan, Mavericks, Yosemite, Os 10 Panthera leo, Mountain Lion, and OS X Mavericks.

Before proceeding it'due south a good idea to backup your drive rapidly with Fourth dimension Machine.

Reboot the Mac and hold downwardly Control+R (hold ain Option fundamental on some Macs)
Select "Recovery Hd" from the kicking menu
Choose "Deejay Utility" from the Mac OS X Utilities screen
Click the hard drive that reported the fault, click the "Starting time Aid" tab, and now click on "Repair Disk"

After Repair Deejay has ran successfully, you are costless to boot OS X as normal and the drives bug should exist resolved.

A few final notes: relying on a difficult drive beingness healthy is not an culling to having backups, you need to backup your Mac with regularity using Fourth dimension Machine or some other method if y'all choose. Hard drives fail, it's a fact of computing life. It's also important to note Disk Utility isn't a 100% conclusive test suite to determine bulldoze health, and if you lot hear weird sounds coming out of the hard bulldoze it's probably a good time to head down to Apple and set for a drive swap because that drive is probable going to croak before long.

Finally, if yous need to perform further maintenance on the deejay, then you may need to use fsck to repair the bulldoze, which is a fleck more than complex and requires the usage of the command line.