Does Repair Disk Erase Everything On A Mac

If you're experiencing these issues on your Mac, information technology might be time to run the Deejay Utility's First Assist function and repair your disk:

Regular system and app crashes
Vanishing and corrupt files
Trouble starting upwardly your Mac
Ambiguous fault messages
External devices non working properly

First things first, if yous're encountering whatever of the to a higher place items, information technology's fourth dimension to backup your information before it's too belatedly. These kinds of problems indicate there could be a problem with your Mac deejay that definitely needs investigating. Here, we'll explain how to run Offset Aid to set up possible problems on your Mac.

What is the Disk Utility's First Aid function?

Some folks really don't similar the thought of poking around in Disk Utility, but it's simple to use and non a place to fear.

The Beginning Aid role within Deejay Utility can apace bank check the status of your Mac deejay, volumes, and external devices. It has multiple built-in capabilities that tin can detect and repair errors. Afterwards analyzing the disk directory, Offset Aid will make up one's mind if it can repair any detected impairment.

If you're facing a trouble with your startup disk, yous'll need to run First Aid from Recovery Mode — we'll cover this in just a moment.

Repair your deejay using Disk Utility

It'southward straightforward to run a check on your Mac with Disk Utility. You'll speedily exist able to identify if any of your disks accept issues.

Mac disk utility

Open up Disk Utility (Finder > Applications > Utilities).
In the sidebar, select the deejay you're having problems with.
Click on Kickoff Assistance at the pinnacle, and select Run.
One time complete, you'll encounter a driblet-down showing the status; click this to explore. Disk Utility volition attempt to repair what it tin and warn you about errors it establish that information technology can't prepare.

Although this method checks all disks, nosotros tin can't repair a cleaved startup disk from hither; for that, we need to run First Aid from Recovery Way.

Quick Tip: If you suspect your Mac deejay is declining, CleanMyMac X has many like shooting fish in a barrel-to-utilize maintenance tools that tin can aid continue your drive running smoothly. I'll talk you through some of the features afterward in the article. Or you download the costless version now —information technology's notarized past Apple and completely safe for your Mac.

How to run First Aid from Recovery Way

Although Disk Utility checks your startup volume every bit well, it can't fix any errors if those are found. Running First Aid from Recovery Mode is necessary for repairing your startup deejay. And then, let's leap straight in:

Restart your Mac, immediately pressing and property Control (⌘)+R on its startup. When you see an Apple logo or spinning globe, release the keys.
Now, choose Disk Utility from the macOS Utilities window.
Select your startup disk from the sidebar, then click the arrow to view all the containers and volumes. Apple recommends repairing volumes offset, and then containers, and so the startup disks final.
And so, from the sidebar, select the final book listed, then click Showtime Assist at the top, and then Run, working your way up the list for each volume, container, and finally, the disk itself.

Mac disk utility window

As you tin can encounter, I've got two volumes, one container, and then the startup disk.

This could have a while, so don't be alarmed if it'southward not over in a couple of minutes; Disk Utility will run its checks and try and repair errors for you.

If Deejay Utility finds errors that it can't repair, it'southward now time to erase (format) your disk.

Erase (format) your deejay

Formatting a disk deletes all files it stores. Make sure you backup all your data to prevent losing anything important.

To start up from macOS Recovery over again, simply follow steps 1 and 2 above.
Select your disk from the sidebar, so click Erase from the pinnacle and complete these items: Name: The proper noun your disk will have after the erase
Format: Disk Utility shows a compatible format by default.
Scheme : Cull the GUID Partition Map.

Now, select Erase to start erasing your disk and every container and volume within it.
When complete, quit Disk Utility.
You'll now need to reinstall macOS if it's your startup deejay.

Repair deejay permissions and run maintenance scripts

Earlier in the commodity, I mentioned using CleanMyMac X . For problems with your difficult drive, this app has some great tools to improve your drive performance and continue your Mac feeling fresh.

I similar to regularly run the Maintenance Module, which can specifically help with both repairing disk permissions and running complex maintenance scripts.

Repairing deejay permissions can help with:

Apps not working correctly
Files that won't delete

Benefits of running maintenance scripts:

Removes temporary items
Optimizes organization
Rotates system logs

Hither's how to get started with CleanMyMac Ten Maintenance Module:

Maintenance Scripts in CleanMyMac X

Open up the CleanMyMac 10 app — download the free version here .
From the left sidebar, select the Maintenance Module.
Select Run Maintenance Scripts and Repair Disk Permissions, then printing Run.

There are another vii useful items on the list, which you lot tin can, of course, run besides.

It's a pretty obvious i, but running regular maintenance on your Mac will help to continue it in good wellness and fully optimized. CleanMyMac X is more than just some other Mac maintenance tool. It'due south a powerful cleaner, malware remover, and performance enhancer that will keep your Mac running similar new.

Problems with your drive e'er crave a fiddling bit of troubleshooting. Hopefully, this article helped you to investigate and repair the hard bulldoze on your Mac.

Good luck, and come dorsum presently for all the latest Mac tips.