disk0s2 Not Mounted | Fix disk0s2 (Macintosh HD) Not Mounting on Mac

If your disk0s2 is not mounted on your Mac, don't worry! This article will introduce 4 proven ways to fix the disk0s2 not mounting error. Install EaseUS Data Recovery Wizard for Mac to avoid data loss during fixing diskos2 not mounting error.

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If the "disk0s2 not mounted" error occurs on your Mac, this article will show you 4 effective methods to fix the disk02s, often referred to as the Macintosh HD, not mounting on your Mac error!

I made a mistake in the Terminal with diskutil, and I unmounted my disk0, which is the OS partition...when I rebooted the system, the OS didn't come up. Reported by a Mac user from the Apple Community

Before fixing the disk0s2 not mounting error on a Mac, consider recovering data from the unmountable drive on your Mac to avoid data loss on your disk.

How to Recover Data from Unmounted disk0s2

Many reasons can lead to a disk unmounted on a Mac, such as "com.apple.DiskManagement.disenter error 0", causing the stored data on it to be unavailable, which may cause data loss. In this case, try to install the powerful data recovery tool to rescue your stored data first!

EaseUS Data Recovery Wizard for Mac can help you recover stored data on an unmounted disk, which is not mounting due to disk error, system crashes, corrupted file system, and other common errors.

The EaseUS software can fix complex unmounting scenarios, including Macintosh HD not showing up in Recovery Mode. Follow the steps below to recover stored data on the unmounting disk0s2, which often refers to the startup disk Macintosh HD on a Mac.

Step 1. Search for lost files

Select the disk location to search for lost files (it can be an internal HDD/SSD or a removable storage device) on macOS Sierra, High Sierra, Mojave, Catalina, Big Sur, Monterey, Ventura, and the latest Sonoma. Click the "Search for lost files" button.

Note: Before data recovery, you'd better click "Disk Backup" from the left sidebar to create a backup of your Mac to avoid further data loss. After backing up, the software can recover data from the Mac backup, and your computer can wirte new data again.

Recover Data Step1

Step 2. Go through the scanning results

EaseUS Data Recovery Wizard for Mac will immediately scan your selected disk volume and display the scanning results.

Recover Data Step2

Step 3. Select the file(s) and recover

In the scan results, select the file(s) to preview and click the "Recover" button to have them back.

Recover Data Step3

If this article can solve your problem that dis0s2 is not mounting on a Mac, share it on social media to help others fix the same problem with you!


Fix 1. Repair disk0s2 with First Aid in Disk Utility

macOS has a built-in utility that can repair disk errors on an internal or external disk, which is the First Aid in Disk Utility. Here are the steps you can refer to:

Step 1. Open Disk Utility from the "Applications > Utilities" folder.

Open Disk Utility

Step 2. Choose the Mac startup disk from the internal disk panel in the Disk Utility window.

Step 3. Click on the "First Aid" button on the top menu, and click "Run" to confirm.

run first aid on disk0s2

Suppose the First Aid process failed; don't panic; this post will guide you on how to deal with this error.

First Aid Process Has Failed

Disk Utility First Aid Process Has Failed [with 5 Proven Ways to Fix It]

This post guides you on how to fix the error the First Aid process has failed and what you can do in case you need to recover data. Read more >>

Fix 2. Use the diskutil Command to Fix the Unmounted disk0s2

Apart from using Disk Utility to repair your disk0s2, you can try to mount a disk on a Mac by using the diskutil command in Recovery Mode:

Step 1. Boot Mac in Recovery Mode, and choose "Utilities > Terminal" from the list.

Step 2. Enter diskutil list in the Terminal window, and check the Volume Identifier from the appeared list.

diskutil list

Step 3. Enter the command line behind, and replace the "xx" with the disk0s2's volume identifier.

diskutil repairvolume /disk **

Suppose the diskutil list command does not work; install EaseUS Data Recovery Wizard for Mac to recover your data first to avoid losing essential data, and then try the fixes below!

Fix 3. Boot Your Mac in Safe Mode

Restart your Mac in Mac Safe Mode, which can solve the disk0s2 not mounting error.

Here are the steps to boot an Intel-based Mac in Safe Mode:

Step 1. Shut down your Mac and press the power button to relaunch it.

Step 2. Press and hold the "Shift" key and release it when the Apple logo to appear. Log in.

Intel Mac Safe Mode

Step 3. If you have FileVault enabled, you might have to log in twice.

Here are the steps to boot Safe Mode in M1 and later Apple Silicon Mac:

Step 1. Shut down the Mac. Hit and hold the power button and wait for the startup options.

Step 2. Hit the "Shift" key and choose "Continue" to log in to Mac Safe Mode.

Fix 4. Erase disk0s2 and Reinstall macOS on Your Mac

When your disk0s2 is unmounted due to file system crashes or other format errors, consider erasing disk0s2 and reinstall macOS.

Note: Erasing a disk will delete all data on it, so you should use EaseUS Data Recovery Wizard for Mac to recover data on the disk0s2 if necessary. After recovering your data to a safe storage location rather than the disk0s2, follow the steps:

Step 1. Boot your Mac into Recovery Mode and select "Disk Utility" from the list.

Step 2. Choose the disk0s2 in the Disk Utility disk list, and click the "Erase" button at the top menu.

erase a disk

Step 3. Choose a new format and name you want, click "Erase" again to confirm, and wait for the process to complete.

Step 4. Go to the Recovery Mode options and select "Reinstall macOS".


This article introduces 4 effective ways to fix the "disk0s2 not mounted" error on a Mac. Before fixing the unmounting error, you should install EaseUS Data Recovery Wizard for Mac to recover the stored data. Then, you can use the four tested methods to mount your disk0s2 on your Mac.

disk0s2 Not Mounted FAQs

Here are questions people frequently ask when they search for how to fix the disk0s2 not mounted issue:

1. Why is my hard drive not mounting Mac?

Numerous factors can lead to a hard drive not mounting on a Mac; for instance, your hard drive is damaged, the file system on the hard drive is corrupted, problems occur on the operating system, etc.

2. How do I force a disk to mount on a Mac?

Follow the steps below to force mount a disk on your Mac:

Step 1. Go to "Finder > Applications > Utilities > Disk Utility".

Step 2. Choose the disk you want to mount, and click the "Mount" button at the top menu to force mount it.

But note that a Mac can only force mount a disk with macOS-compatible file formats.

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Updated by Brithny

Brithny is a technology enthusiast, aiming to make readers' tech lives easy and enjoyable. She loves exploring new technologies and writing technical how-to tips. In her spare time, she loves sharing things about her game experience on Facebook or Twitter.

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