Summary: Unable to mount Macintosh HD in Disk Utility in macOS High Sierra/Mojave/Catalina? Cannot access the data stored on the Mac hard drive? Don't worry. This article will show you 7 efficient solutions to fix Macintosh HD not mounted/showing up in Disk Utility in macOS Catalina/Mojave/High Sierra issue without losing data.
Mounting a hard drive on Mac means to make the drive available for the operating system, which requires a mount point to read and write this hard drive. If the internal hard drive of Mac, the disk0s2, or the Macintosh HD is not mounted on Mac, you'll see:
Then download the OS you want from below. Once downloaded use the terminal command below the install link to create a bootable installer. Note: If your Mac is using macOS Sierra or earlier, include the -applicationpath argument. The Sierra and El Capitan commands show. MacOS Sierra is the newest version of Mac OS which has recently become available for the Mac users to download. As always, there are some downsides to the new software updates that some computer users experience. “macOS Sierra failed to download”. To recover lost files, you can use Data Recovery Pro – it searches through copies.
The worst thing of all was that, when using OS Sierra and booting in recovery mode, I couldn't see the terminal from the menu bar. I just had that stupid 'Language Chooser'. Making a USB book disk worked, but only after I restarted that way twice. Before the High Sierra update to 10.13.6 I was able to boot in single-user-recovery mode by holding Cmd-R-S at startup, but after the latest software update booting while holding Cmd-R-S just enters the regular Single-User Mode on the root volume (like if I pressed only Cmd-S). Is there a new method or alternative key combination to boot the RecoveryOS in Single-User Mode?
In fact, Macintosh HD - Data (macOS Catalina) or Macintosh HD not mounted problem is quite common on Apple computers. If you have met the same situation above, what can you do to fix the problem without worrying about data loss? Now, read on to learn the solutions.
Why does Macintosh HD not mounted/showing in Disk Utility?
The volume Macintosh HD is found corrupt and needs to be repaired before mounting for those 5 primary reasons.
How to recover lost data when Macintosh HD not mounted/showing up in Disk Utility?
Pro tips: Before fixing the Macintosh HD not showing up in Disk Utility issue, please stop using the Mac computer and make sure you have a backup copy of the Mac hard drive.
That's because, your any further operation on the Mac computer, including troubleshooting the hard drive not mounting errors, may write new data to the unmounted Mac hard drive and overwrite the original data. Without backups, you need to recover lost data from crashed/dead Mac hard disk or use Target Disk Mode
Method 1: Recover lost data from unmountable Macintosh HD with iBoysoft Data Recovery for Mac
iBoysoft Data Recovery for Mac is free Mac hard drive data recovery software which helps yourecover lost data from the unmountable Macintosh HD. It also helps retrieve files from corrupted Mac hard drive when there is a boot issue, and recover data from T2-secured Mac , like MacBook Pro, MacBook Air, iMac introduced in and after 2018. It is fully compatible with macOS Catalina 10.15/Mojave 10.14/High Sierra 10.13/10.12 and OS X 10.11/10.10/10.9/10.8/10.7. It supports Mac photo recovery as well as documents, videos, audio files and emails recovery.
Within three steps - select, scan and recover, you can get all lost data back. Moreover, it also provide with powerful preview features and different filtering functions. After scanning, it allows you to preview all recoverable files no matter what file types you have lost, including documents, photos, videos, music files, emails, etc. The filtering and sorting functions enable you to quickly target the right content from a mass of scanning results.
Tutorial to recover data from the unbootable Macintosh HD
Though it's unbootable, you can still rescue your data by running iBoysoft Data Recovery for Mac in Recovery Mode. You can also refer to this tutorial: How to run iBoysoft Data Recovery for Mac through iBoysoft Server. This method is highly recommended because it is a lot easier and time-saving.
Note: Before you follow the steps below, you have to make sure your Mac has Internet connection.
Step 1: Restart your Mac and immediately hold down COMMAND+OPTION+R keys at startup.
Step 2: Choose a network for your Mac. You need to make your Mac connected to the Internet all the time.
Step 3: Go to Utilities > Terminal from the menu bar.
Step 4: Run the following command:
This will launch iBoysoft Data Recovery for Mac through iBoysoft Server.
Step 5: After launching iBoysoft Data Recovery for Mac, please select the Mac hard drive, usually Macintosh HD, and click Scan button.
Step 6: Preview the scanning results and choose the files you want to get back.
Step 7: Click Recover button. Here please select a different location to store the recovered files.
Method 2: Use Target Disk Mode
Target disk mode is a boot mode which allows you to browse and transfer files to and from a Mac internal hard drive without booting macOS. It can be used for troubleshooting the internal hard drive not showing up on Mac.
Mac Os X Recovery Mode Not Working
• How to transfer files to and from a Mac with Target Disk Mode?
How to fix Macintosh HD not mounted in Disk Utility?
After recovering data from the Mac hard drive that is not mounted in Disk Utility, you can follow the solutions to fix the issue.
![]() Solution 1: Restart your Mac computer
No matter what happens to your Mac computer and makes your Macintosh HD unmounted, the first and foremost solution is to shut down your Mac computer and restart it up again. Simply holding down the on/off key until the computer turns off, waiting a few minutes, and then turning it back on. Sometimes when you turn it back on, everything returns to normal.
Solution 2: Repair the unmountable Macintosh HD in Recovery Mode
If the Macintosh HD is unable to be mounted in Disk Utility normally, you can try to repair it with Disk Utility's First Aid in Recovery Mode.
Step 1: Boot your Mac into Recovery Mode. Start your Mac and hold down the Command and R keys simultaneously until you see an Apple logo or spinning globe. Then release the keys.
Step 2: Select Disk Utility from the macOS Utilities menu and click Continue.
Step 3: Select the unmounted Macintosh HD from the left-hand panel.
Step 4: Click First Aid on the top of the window and wait while it verifying and repairing errors.
Solution 3: Fix Macintosh HD not mounted by Terminal
If Disk Utility stopped repairing Macintosh HD in macOS, you can then try to fix it with Terminal.
Step 1: Boot your Mac into Recovery Mode.
Step 2: Click Utilities from the menu bar and select Terminal from the drop-down list.
Step 2: Enter diskutil list. This will list out the available volumes.
Step 3: Check the volume identifier from the table that appears. (For example disk 2s1)
Step 4: Enter diskutil repairVolume/disk 2s1. (Replace disk 2s1 with the volume identifier of your Macintosh HD)
Solution 4: Run FSCK command in Single User Mode
Chameleon bootloader for mac download. FSCK is a command-line tool to check the consistency of a hard drive and repair disk errors. If the solutions above are unable to fix Macintosh HD or the Mac internal hard drive not mounted issue, you can have a try.
Step 1: Restart your Mac and, before the Apple logo appears, hold down Command and S keys. This will boot your Mac into Single User Mode.
Step 2: Type in:
Step 3: If you see 'File system was modified', then re-type in the command again until you see 'The volume [name] appears to be OK'.
Step 4: Type in the command to restart your Mac:
Solution 5: Try Safe Mode
When trying to boot into Safe Mode, macOS will scan and repair any errors it finds on the disk. To boot into Safe Mode, you need to shut the Mac down and start it up while holding down Shift. Release the Shift key when you see the login window. Should your computer boot properly, try restarting and booting as normal.
Solution 6: Reset NVRAM on your Mac
NVRAM is a small amount of memory used to store certain settings for quick access on Mac. The corrupted NVRAM can cause Mac glitches or even prevent macOS from starting. Thereby if your Mac computer won't boot properly, you can attempt to reset the NVRAM. Reboot your Mac and hold down the 'Command + Option + P + R' key buttons. After resetting, you can retry to mount the Macintosh HD on Mac.
Solution 7: Erase the unmountable Macintosh HD and reinstall macOS
If the Macintosh HD won't mount, and your Mac still cannot recognize the Mac internal hard drive, the final chance is to factory reset the Mac - format the Macintosh HD and reinstall macOS on it. But as you know, reformatting will erase all the data stored on the Macintosh HD. Please make sure you have recovered data with iBoysoft Data Recovery for Mac as above.
Step 1: Boot your Mac to Recovery Mode.
Step 2: Select Disk Utility from the macOS Utilities menu.
Step 3: Select the unmountable Macintosh HD from the side bar.
Step 4: Click Erase from the top.
Step 5: Setup the required information (i.e. Name, Scheme, Format, etc.) to reformat the disk and click Done when finished.
Step 6: Go back to macOS Utilities screen and select Reinstall macOS.
What to keep in mind: Once you encountered the Macintosh HD not mounted error, the first thing you should do is to save your data on the Mac hard drive. Without regular backups, a data recovery program like iBoysoft Data Recovery for Mac will help you recover lost data from the unmounted Mac hard drive. Then, try to fix the Macintosh HD not mounted issue.
Final thoughts
It's so frustrating that Macintosh HD greyed out in Disk Utility in Recovery Mode, especially when you have important data stored on the Mac. But the good news is that quite a few feasible solutions are available to fix this issue. Before that, if you care about data on the Macintosh HD, you should recover lost data from the unmountable Macintosh HD with iBoysoft Data Recovery for Mac. Download and install this free Mac data recovery software, you won't be bothered by any data loss scenarios.
Read Content Hub for: hard drives not showing up/mounting issues
Which solution helps you the most? Do you have any other solutions to fix Macintosh HD not mounted issue or have any question? Please don't hesitate to email us.
“ - When I tried to update to the new High Sierra, the Mac downloaded and rebooted as expected. But then it hung on the ‘Installing software update’ screen all day long.
- Mac OS High Sierra install failed, and no error details. ”
macOS 10.13.6 High Sierra version is the latest update for all macOS High Sierra users. You can install macOS High Sierra update for about 45 minutes to 2 hours. If the macOS 10.13 High Sierra update cannot be installed for hours, you need to take measures to solve the problem.
Well, these are workable ways to fix macOS 10.13 high Sierra update failure successfully. How to see my iphone apps on mac.
Guide List
1. Fix macOS 10.13 High Sierra Won’t Install after Downloading
If you fail to install the downloaded macOS 10.13 High Sierra update, you can use the following tips to fix the macOS update error.
Open Launchpad. Find and delete the Install macOS Sierra file with a question mark attached.
Reboot your Mac. Then you can re-download and reinstall macOS 10.13 High Sierra update.
Choose the Apple icon on the top left corner of the screen. Select the App Store from the list. Later, you can locate the Update section to fix macOS 10.13 High Sierra won’t install failure.
You can also learn how to fix macOS Sierra won't boot after updating.
![]() 2. Solve macOS 10.13 High Sierra Update Failure via Safe Mode
You can disable or uninstall anti-virus software first. Check if your computer is under a strong and fast Internet connection. If these measures are useless, you can boot Mac in Safe Mode to fix macOS 10.13 High Sierra failed to update.
Power off your computer.
Restart Mac and hold the Shift key.
Do not release the Shift key until the Apple logo appears.
Install macOS 10.13 update in Safe Mode to fix Mac OS update failure.
Note: You can use System Information to check if your Mac is started in Safe Mode.
You can use the same way to fix MacBook Pro shuts down randomly or fix macOS Sierra 10.12.1 Update Stuck Error.
Mac Recovery Mode Not Working3. Troubleshoot macOS 10.13 High Sierra Update Failure with a Clean Installation
What if your macOS 10.13 High Sierra stuck or freeze while installing? It is also a frequently asked question that the Mac OS installation couldn’t be completed. During this time, you can complete a clean macOS 10.13 High Sierra update with a bootable USB drive.
Connect the UDB drive to Mac
Download macOS Sierra 10.13.6 installation package from Mac App Store. Plug a portable USB drive to Mac. Run Finder and choose Applications in the left panel. Find Disk Utility in the Utilities folder. Select the thumb drive in the sidebar. Then choose the Format option.
Create a bootable macOS 10.13 High Sierra installer
You need to name the plugged USB drive as Untitled. Choose OS X Extended followed by Erase. After formatting the USB drive and downloading macOS 10.13 High Sierra, you can open the Terminal window. Type and following command in Terminal and then hit Enter. Reinstall Mac Os X From Usb
sudo /Applications/Install macOS Sierra.app/Contents/Resources/createinstallmedia --volume /Volumes/SierraBootInstall --applicationpath /Applications/Install macOS Sierra.app --nointeraction &&say Done
Imazing 2.9.13 cr2. Fix macOS 10.13 High Sierra update failure
Connect this bootable USB drive to your Mac. When you restart your computer, you need to hold and press the Option key. Do not release it until you hear the reboot tone. Then select the Install macOS Sierra disk in the drive list.
Later, choose Mac’s startup disk from the Disk Utility list. Click Erase to format it. Once the process is finished, go back to the Utilities window. Choose Install macOS and install it to the recently formatted Mac startup drive.
Now you can follow the on-screen instruction to install macOS 10.13 High Sierra update completely.
4. Recover Lost Files Due to macOS 10.13 High Sierra Update
It does not matter if you forgot to make a backup with Time Machine. Actually, FoneLab Data Retrievercan help you recover any deleted or lost Mac file without data overwritten.
There is no need to recover the entire Mac backup file. You can recover the selected file on Mac with the Mac data recovery software safely and easily.
FoneLab Data Retriever
FoneLab Data Retriever - recover the lost/deleted data from computer, hard drive, flash drive, memory card, digital camera and more.
Have you fixed macOS 10.13 High Sierra update failure now? If not, you can write down the main symptom below. By the way, the data recovery software for Mac can work under all data loss situations. You can use this tool to recover hidden Mac files quickly too.
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December 2020
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