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• How to access an external drive that's not recognized on a Mac Most of the time, when you connect an external hard drive to your Mac’s USB port, you soon see it mount on the desktop. Apple likes to ensure these are easy to find, so they also appear in the Finder in the left-hand column under Devices, since Mac’s treat them the same way as.

• Internal Hard Drive For Mac Pro 2009
• Internal Hard Drive For Mac Mini 2011
• Internal Hard Drives For Macbook Air
• 4 Tb Internal Hard Drives For Mac
• Internal Hard Drives For Mac Pro
• Internal Hard Drives For Mac Pro
• Internal Hard Drive For Mac Mini

Summary: This post will show you 5 solutions to fix the Mac internal hard drive not mounting issue. Also, you can learn how to recover data from not mounted Mac internal hard drive with data recovery software for Mac - iBoysoft Mac Data Recovery.

How to Choose the Right Hard Disk for Your Mac. Posted on March 20th, 2018. If you consider that the cost of an external hard drive is around $100 for 2 TB, then picking the internal SSD and external hard drive will run you about $300 more than the fusion drive—but your Mac will run much faster.

Most of the time, the Mac internal hard drive, usually known as Macintosh HD, is the system drive of the Mac computer, from which your Mac start or boot up. However, it may drive you crazy if the Mac internal hard drive won't mount. That's because once that happens, your Mac computer may be stuck on loading/login screen or not bootable at all. Besides, it's possible for you to suffer severe data loss if you handle it incorrectly.

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Don't worry. Here is all you need to know about mounting the Macintosh HD, or mounting the Mac internal hard drive in macOS Catalina 10.15/Mojave 10.14/High Sierra 10.13 or Disk Utility.

How to recover data from the not mounting Mac internal hard drive?

It seems that somethings wrong with my internal boot drive. I wanted to start my Mac but the grey progress line stopped at about the half and didn't continue. I tried to boot in secured mode but not possible. I loaded recovery mode and wanted to check and repair disk utilities but I cannot hit those buttons because my drive is not mounted and cannot be mounted.

Is there another possibility to mount my drive or to access my data somehow? The thing is that I do not have a backup and that is why I need to access my data and store them somewhere prior being able to do a clean reinstall of my Mac.

Sadly, he is not the only person who suffers data loss due to unmountable Mac internal hard drive. As mentioned above, yourMac computer won't boot if the Macintosh HD isn't mounted. Moreover, your any attempts to fix it may write new data which overwrites the original data on the drive. Thus, to avoid data loss, you're recommended to recover data from the unmountable Mac internal hard drive as the first step.

iBoysoft Mac Data Recovery is one of the best Mac data recovery software which canrecover data from failed internal Mac hard drives, even when your Mac computer fails to boot. Moreover, the program can alsorecover data from formatted drives, recover data from inaccessible drives, andrecover data from unreadable drives, and so on. It's fully compatible withmacOS Catalina 10.15/Mojave 10.14/High Sierra 10.13/10.12 Sierra and OS X 10.11/10.10/10.9/10.8/10.7.

Video Tutorial: How to recover data from unmounted Mac internal hard drive?

Now follow the tutorial below to recover data from unmounted Mac internal hard drive.

Method 1: If you have only one Mac computer

Don't worry. You can still recover data from the unmounted Mac internal hard drive with the help of iBoysoft Mac Data Recovery.

Step 1: Click the Power button to turn on the Mac, and immediately press COMMAND+OPTION+R keys to boot your Mac into Recovery Mode.

Step 2: Open Terminal from the Utilities drop-down menu.

Step 3: Run the following command:

This will launch iBoysoft Mac Data Recovery through iBoysoft Server.

Step 4: After launching iBoysoft Mac Data Recovery, please select the Mac internal hard drive and click the 'Next' button. This program will start scanning for lost files on the drive.

Step 5: Preview the scanning results, and choose the files you want to get back.

Step 6: Click the 'Recover' button. You need to specify a different location to store the recovered files.

You can also refer toHow to run iBoysoft Mac Data Recovery in Recovery Mode.

Method 2: If you have two Mac computers

If you fortunately have another healthy Mac computer, or you can borrow one from your friends, you can create a bootable drive and then recover data from it.

Step 1: Create a bootable drive on the healthy Mac computer.

1. Download, install and launch iBoysoft Mac Data Recovery.

2. Click iBoysoft Data Recovery on menu bar and then select 'Create Boot Drive'.

3. Insert a USB drive into the healthy Mac, and choose it as the media to create a bootable drive on.

4. Click 'Make bootable' button. The creation process will start immediately. Be patient as it could take a while.

Note: This process will erase all data on the USB drive. So please be sure to make a backup if there're important files.

5. When the process completed, you'll see a window showing the next steps to recover data. You can take a note, or take a photo with your phone, of the information. When everything is ready, click the 'Close' button.

Step 2: Recovery data from the unbootable Mac computer.

1. Insert iBoysoft Mac Data Recovery bootable USB drive into the unbootable Mac computer.

2. Reboot your Mac computer and hold down the Option key (⌥) at startup.

3. Select iBoysoft Mac Data Recovery from the boot options. This program will launch when your Mac boots up.

Now you can recover data from the unbootable Mac computer just as above.

iBoysoft Mac Data Recovery can also recover deleted photos, documents, audio, videos, emails from APFS, HFS, HFS+, exFAT, FAT32 formatted drives. Apart from internal hard drive data recovery, iBoysoft Mac Data Recovery also supports recovering data from external hard drives, USB flash drives, SD cards, memory cards, and Pen drives, etc.

How to fix Mac internal hard drive won't mount issue?

After recovering data from the unmountable Mac internal hard drive, you can now try to mount the Macintosh HD via the solutions as below.

Solution 1: Restart the Mac computer

Most of the time, restarting the computer is a feasible way to solve some booting problems. So you can at first try to restart your Mac by holding down the Power button till the Mac turns off. Wait a moment and turn it on. Can the Mac internal hard drive be mounted now?

Solution 2: Repair unmountable Mac internal hard drive via First Aid

Internal Hard Drive For Mac Pro 2009

Disk Utility is desined to repair minor errors on disks. So you can try to fix the unmountable Mac internal hard drive with Disk Utility in Recovery Mode.

Step 1: Boot to Recovery Mode by restarting the Mac computer while pressing and holding down Command and R keys at startup.

Step 2: Select Disk Utility and click Continue.

Step 3: In the sidebar, select the unmountable Mac internal hard drive you wish to repair.

Step 4: Click the First Aid button.

Step 5: Click Repair Disk.

Solution 3: Run FSCK command in Single User Mode

If Disk Utility stopped repairing Macintosh HD, you can then try out FSCK command in Single User Mode, which is helpful in isolating startup related issues.

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: /sbin/fsck -fy.

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 reboot to restart your Mac.

Solution 4: Try Safe Mode

Just like Single User Mode, Safe Mode is able to resolve problems that prevent your Mac from booting up.

Step 1: Shut down your Mac computer.

Step 2: Start the Mac up while holding down Shift. Release the Shift key when you see the login window.

Step 3: If your Mac boots into Safe Mode properly, then try restarting and booting as normal.

Internal Hard Drive For Mac Mini 2011

Solution 5: Erase the unmountable Mac internal hard drive and reinstall macOS

If you still can't mount the internal hard drive on your Mac, there might be serious directory structure or file system corruption in the disk. In this case, your last chance is to reset the Mac so as to make the Mac computer work again. However, this process will erase mac hard drive and reinstall macOS, which is destructive to the data on the drive. Thus, make sure you have recovered data with iBoysoft Mac Data Recovery.

Step 1: Boot your Mac into Recovery Mode.

Step 2: Go to Disk Utility and erase the unmountable Mac internal hard drive.

Step 3: Go back to macOS Utilities screen and select Reinstall macOS. Then, follow the onscreen wizard to reinstall the OS.

Solution 6: Look for help from local data recovery company

If your Mac internal hard drive still can't be fixed through the solutions above, the drive might have hardware problems. You'd better send it to local data recovery company.

Conclusion:

The Mac computer, such as MacBook Pro/Air, boots from the internal hard drive and allows you to access data. However, it's very common that the internal hard drive won't mount on Mac. Once it happens, don't delay to recover data from that unmountable internal hard drive. After recovering data with Mac data recovery software, like iBoysoft Mac Data Recovery, you can troubleshoot the error without worrying about data loss.

Partitioning your hard drive can be a frustrating and daunting task. However, once you understand how the process works, it’s a lot less scary. So why would you want to partition a drive?

Back when I was in college, like many other students, I had a MacBook Pro for ease of use and its minimalist aesthetic. I didn’t think about the fact that some applications that I needed for school were not compatible on Mac. That is when I thought about partitioning my drive so that I could run Windows on Mac.

In addition, I had an external hard drive that I also wanted to be able to use with both OS X and Windows. In this article, I’ll walk you through the steps for partitioning internal and external hard drives on a Mac.

Before you start, you should make sure to backup your entire Mac computer using Time Machine. Even if you don’t mess anything up, the chances are good that the OS will screw up and break your system.

Partition External Drive

If you have a large external hard drive, you can easily partition it so that the entire drive gets utilized. I was using a 1.5 TB external drive with my Mac, but never really used more than 1/4 of the space.

Instead, here’s how I ended up partitioning my drive, which ended up making it much more useful:

• 33%: Mac (Extra Storage) – 500GB
• 33%: Mac (Time Machine Backup) – 500GB
• 33%: Windows (Extra Storage and Backup can go on same partition) – 500GB

As you can see, each partition can have its own file format. If you have an even larger drive, you can create even more partitions for other operating systems like Linux, etc.

To partition the drive, go to Spotlight at the top of your MacBook Screen (Notification Bar) and type in Disk Utility.

On the left hand side, navigate to the tab that says EXTERNAL.

Yours will look a little bit different than mine. Under the External heading on the left hand side, you should have one hard drive instead of 3 (I have already partitioned mine). Navigate to that external hard drive and partition it according to your needs.

NOTE: If your external hard drive is not formatted for the Mac operating system, you may first need to Initialize it and then Erase it. It’s very easy:

• Under the external tab on the left side, select the drive you want to use.
• Then select the Erase option at the top
• Once there, give it a name and format it to Mac OS Extended (Journaled)
• For the Scheme, you can pick from GUID, MBR or Apple. If you’re only using the drive for storage, then it doesn’t really matter which one you pick. However, if you plan to boot from the drive, you should pick MBR for Windows and Linux and GUID for OS X. If you plan to use the drive for Boot Camp, you should also pick GUID.

Note that you can also click on Security Options and choose from different levels of security. By default, OS X will use the fastest method, which not does securely erase the drive. If you move the slider to Most Secure, it will meet the DOD standard for erasing data by overwriting the data 7 times. This will prevent anyone or any software from recovering any previously written data from the drive.

OS X may ask you if you want to use the drive for Time Machine backups, but you should choose Decide Later unless you want to use the entire drive for the backups. Now you’re ready to partition the external drive!

Internal Hard Drives For Macbook Air

Go to the top where it has the options: First Aid, Partition, Erase, Restore, Mount, etc. Select Partition and create the partitions based on your specific needs. In my case, I chose a size of 500 GB, which is one-third of the drive.

4 Tb Internal Hard Drives For Mac

Select how you would like to partition the drive (refer back to my percentages, as that’s what I have used in the screenshots here), select Apply and then click Partition. After this, it will take a few minutes to partition, so be patient!

When completed should see the green check mark next to your drive and it should say Operation Successful. Now select Done and you’re done with the first partition.

Now to partition the rest of the space, you will click on Untitled under External and then click on Partition again.

Give the partition a name, pick a size and choose the format. Since this is going to be for Windows storage, I chose MS-DOS (FAT). You can also choose exFAT if you like as that is compatible with both Windows and Mac.

Partition Internal Drive

Partitioning an internal hard drive is pretty much the same in terms of the procedure you have to follow, but it’s a little bit different in how it gets implemented.

Internal Hard Drives For Mac Pro

Since you already have OS X installed on your internal drive, when you click Partition and choose a size, you’ll notice that you can’t create a partition that is smaller than the amount of space already used on the drive.

My internal drive was already using 359GB of space, so when I typed in 200GB, it automatically changed it to 359GB and put up a message stating that the first volume cannot be removed and the volume could not be split because the resulting volumes would be too small.

So if you want to create an additional partition, the first thing is to create a partition that will include OS X and give you some additional space for installing programs, etc. Below, I left the name as Macintosh HD and made the partition 500GB. That means the partition where OS X is installed with have about 140GB of breathing room for extra data.

Internal Hard Drives For Mac Pro

Basically, we are just shrinking the original partition, which took up the entire disk to something smaller. Then we will partition the free space as we like.

Internal Hard Drive For Mac Mini

As you can see, I have made the original partition 500GB instead of 1TB, which frees up 500GB on the disk for creating other partitions. As with the external hard drive, once the partition has been created, click on Untitled, but this time under the Internal heading and click on Partition.

That’s basically all there is to partitioning drives in OS X. Hopefully, it worked for you. Enjoy!