Fast path - download the OS installer you want (High Sierra or whatever) and wipe the drive. When you are booted from an external USB, repair the drive twice to see if the second pass is faster than the first. If you have issues with a wiped / empty drive - you can seek hardware service knowing that your data is backed up. Follow the Stage 3 directions until you reach the Disk Utility. There, select your internal drive and click the Delete Volume toolbar button. Once you do, your internal drive will vanish. Close Disk Utility and then re-open Disk Utility. You’ll see an internal drive named something like “Container 0”. Select it, and choose Format from the.
Overview
Disk Utility is an essential tool in the Utilities folder to reformat or re-partition a hard drive, mount or create a disc image, repair disk permissions or perform other disk “first aid,” in Mac OS X. In El Capitan, Disk Utility was improved with a more colorful edition providing at-a-glance information of how you use your disk. In the new macOS Sierra system, the new design of Disk Utility is still here. And there is more things improved for Disk Utility in macOS Sierra.
Improvements made to Disk Utility in macOS Sierra
The disk partitioning tool in Sierra is much better than the one in El Capitan, making it easier to tell where the system partition is and how much space is available on the disk. Another improvements made to Disk Utility in macOS 10.12 Sierra is Resizeable Disk Utility. The Disk Utility app in OS X El Capitan cannot be resized. Whether this was intentional or a bug remains unclear, but Apple has fixed this issue in Sierra as the Disk Utility window is once again resizeable.
Disk Utility Missing Feature in macOS Sierra: Repair Disk Permission, and the Solution
The Disk Utility app has long contained the ability to verify and repair disk permissions on a Mac, but in Mac OS X El Capitan, this feature has been removed. And the feature isn’t brought back in macOS Sierra. Since El Capitan, there are some essential changes to the way it handles files. In El Capitan and Sierra, the macOS will automatically repairs file permissions during software updates and changes.
So there is actually no need to repair file permissions any more. Though, it’s still often a useful troubleshooting step for remedy an ailing Mac, it’s a pity that the command line of repair file permissions is has been completely removed from macOS Sierra. If you open up Terminal (Applications > Utilities) and type in:
sudo /usr/libexec/repair_packages –verify –standard-pkgs /
You will get sudo: /usr/libexec/repair_packages: command not found.
Disk Utility Missing Feature in macOS Sierra: Burn CD or DVD disc, and the Solution
Another important Disk Utility missing feature in macOS Sierra is the ability to burn CDs and DVDs from Disk Utility as no Mac now ships with an optical drive.
However, if your Mac has a built-in optical drive, or if you connect an external DVD drive (for example, an Apple USB SuperDrive), you can burn files to CDs and DVDs to share your files with friends, move files between computers, or create backup files. Discs you burn on your Mac can also be used on Windows and other types of computers.
The Solution: Follow these steps to burn a CD or DVD in macOS 10.12 Sierra:
Warning: CD-RW and DVD-RW disks (the RW stands for rewritable) discs rarely work in devices other than your Mac, including CD (audio) players and DVD (video) players. If you burn a music CD or video DVD and intend to watch or listen to it on a device other than your Mac, make sure the disk is a CD-R or DVD-R; NEVER use rewritable CD-RW or DVD-RW disks.
Use the professional DVD Burner for macOS Sierra to Burn DVD disc playable anywhere
Sometimes you may have problems of burn CD or DVD disc in macOS Sierra with the above methods. Even you can successfully burn DVD discs, it is frustrated that they are not playable. In this situation, you can use the professional DVD Burner for macOS Sierra to Burn DVD Disc in macOS Sierra. It can create, make, burn videos to DVDs from popular videos like MP4, MKV, AVI, MPG, MPEG, WMV, MOV, FLV, MTS, MXF, HEVE, YouTube etc. with 90+ free DVD menus on macOS 10.12 Sierra. Moreover, this DVD Maker for macOS Sierra lets you create photo DVD Slideshows with music and edit videos using tools like trim, crop, rotate, watermarks, etc.
Summary: Unable to mount Macintosh HD in Disk Utility in macOS Big Sur/Catalina/Mojave/High Sierra? 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 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 one of these:
In fact, Macintosh HD - Data (in macOS Catalina and macOS Big Sur) 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, which is greyed out in Disk Utility, is found corrupt and needs to be repaired before mounting for those 5 primary reasons.
Unmountable Macintosh HD Data Recovery
Note: 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.
Disk Utility Mac High Sierra Iso![]()
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 you recover 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 Big Sur 11/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 macOS Recovery Mode. 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.
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.
• 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.
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.
Solution 4: Run FSCK command in Single User Mode
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.
Solution 5: Try Safe ModeDisk Utility Mac Where
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.
So, 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.
Disk Utility Mac High Sierra 10 13
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.
Disk Utility Mac DownloadFinal 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.
Disk Utility Mac High Sierra Download
Read Content Hub for: hard drives not showing up/mounting issues
Disk Utility Mac High Sierra Software
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.
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