Check Hard Drive Health of Mac with Disk Utility

Check tutorial of Check Hard Drive Health of a Mac with Disk Utility

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It is a good idea to check the health of a Mac’s hard drive as part of periodic maintenance. This is extremely easy with Disk Utility, and we’ll cover it exactly how to verify hard drives, how to fix them and what to do if you encounter problems or errors during the process. This works for all hard drives, be it an internal drive, external drive, or boot drive, although the process is slightly different for boot drives. Let’s start.

Checking hard drive health on Mac

The first thing you want to do is check the hard drive status, this is done with a process called verification, and it’s quite simple:

  1. Launch Disk Utility, found in the / Applications / Utilities folder
  2. Select the Mac hard drive from the menu on the left and click on the “First Aid” tab
  3. Click on “Verify Disk” in the lower right corner and let it run

You will notice that the window is filled with messages about the health of the disk, messages indicating that everything is OK appear in black, messages indicating that something is wrong appear in red. Disk Utility should look something like the following screenshot:

Check the health of a Mac's hard drive with OS X Disk Utility

For the vast majority of users, what you will see looks something like this, and ends with the message “The partition map appears to be OK”, indicating that no errors were found:

Verify partition map for “APPLE Media” Verify prerequisites Verify the partition list Search for an EFI system partition Verify the size of the EFI system partition Verify the file system of the EFI system partition Verify all the load spaces of the HFS data partition Verify the partitions of the core physical storage The partition map seems okay

If you see a red message saying something like “Error: this disk needs to be repaired”, you can choose to click “Repair disk”. button to start that repair process, which works for any internal or external drive – unless the drive in question is your boot drive, you will find the “Repair Disk” button is inaccessible. However, that doesn’t mean you can’t fix the startup disk, it just requires an extra step which we’ll cover next.

How to Repair a startup disk with Disk Utility

In this case, all you need to do is reboot into the Recovery HD partition and run Repair Disk from there, here is how to do that in modern macOS versions including macOS Sierra, High Sierra, Mac OS X El Capitan, Mavericks, Yosemite, OS X Lion, Mountain Lion, and OS X Mavericks.

Before proceeding, it is a good idea to make a quick backupup of your drive with Time Machine.

  1. Restart the Mac and hold down Command + R (hold your own Option key on some Macs)
  2. Select “Recovery HD” from the boot menu
  3. Choose “Disk Utility” from the Mac OS X Utilities screen
  4. Click on the hard drive that reported the error, click on the “First Aid” tab and now click on “Repair Disk”

After Repair Disk has been successfully executed, you are free to boot OS X in the normal way and the disk issues should be resolved.

A few final Notes: Relying on a hard drive to be healthy is not an alternative to making backups, you should take regular backups.up from your Mac using Time Machine or some other method if you prefer. Hard drives fail, it’s a fact of computing life. It’s also important to note that Disk Utility isn’t a 100% conclusive test suite for determining drive health, and if you’re hearing weird noises from the hard drive, it’s probably a good time to go to Apple and get ahead. prepare for a disk swap as that drive will likely crack soon.

Finally, if you need to perform further maintenance on the disk, you may need to use fsck to repair the disk, which is a bit more complicated and requires the command line.

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Check Hard Drive Health of a Mac with Disk Utility: FAQ

Tutorial Summary: Check Hard Drive Health of a Mac with Disk Utility

In this guide, we told you about Check Hard Drive Health of a Mac with Disk Utility; please read all steps so that you understand Check Hard Drive Health of a Mac with Disk Utility in case if you need any assistance from us, then contact us.

How this tutorial helping you?

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What is actual time in which this method complete?

The time to complete the Check Hard Drive Health of a Mac with Disk Utility tutorial is 10+ minutes.

What are the supported Device?

Apple

What are the supported Operating system?

mac OS


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