Unfortunately, in this case, you’ll need to rely on any pre-existing Mac backups - if you have one. If problems with your disk prevent you from booting up your Mac, you won’t be able to make a backup first. For this reason, we strongly urge you to back up all the data on your Mac before starting. Back up your MacĮven though you’re repairing the disk on your Mac, if the repair fails it can actually leave your disk worse off than before you started. But if your disk is damaged or corrupt in any way, carrying out First Aid on it could take a couple of hours instead.

Repairing a healthy disk on your Mac only takes about five minutes.

You should also set aside a decent amount of time. Some of these steps involve powering off your Mac, so you might want to print off or load these instructions on a separate device before continuing. But before you jump in, there are a few other steps you need to take to protect yourself from data loss. How to repair disk on your Mac with Disk UtilityĪt its essence, Mac disk repair is as simple as opening the Disk Utility application, selecting a disk, and running First Aid. But all you really need to know is that Disk Utility will scan the entire disk to find and repair these issues, which can affect your Mac’s performance if untreated. These issues could range from corrupt data to formatting issues, to bad directory structures. It's one of the key apps for a faster Mac. You can also use Disk Utility to run First Aid, repairing various problems affecting your Mac’s disk. You can use Disk Utility to partition, restore, or format different disks. What is Disk Utility First Aid?ĭisk Utility comes pre-installed on every Mac, and offers a way to manage and repair the various disks you might use: startup disks, storage volumes, and even external drives.

Install MacKeeper to scan your Mac, fixing any existing issues and ruling out other potential problems before trying to repair the disk. Lots of the same symptoms can be caused by other problems, like a lack of storage or a malware infection. It isn’t always easy to diagnose a problem with your Mac disk, be it an HDD or an SSD. In this guide, we’ll show you how to use Disk Utility to run First Aid and repair any disks connected to your Mac. Luckily, Apple includes a handy tool you can use to repair your Mac: Disk Utility. You might need to repair your Mac disk if your computer won’t start up, apps keep freezing, you can’t open certain documents, or the performance has slowed to a halt.

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