Written by
Connie YangSummary: Read this post to fix the hard drive not mounting on Mac - com.apple.DiskManagement.disenter error 49180. You can find the causes and solutions of this error here. By the way, since the hard drive is unmountable, rescue the data on it with iBoysoft Data Recovery to escape data loss in the future.
You click the Mount button to try manually mounting the greyed-out exFAT, NTFS, FAT32, HFS+, or APFS disk in Disk Utility, only to get the error message saying: com.apple.DiskManagement.disenter error 49180.
Here's a similar case from the Apple Community:
I connect an SSD to my MacBook, but it is unmounted. When I click the Mount button for the volume, I get the message: Could not mount “MacBook“ (com.apple.DiskManagement.disenter error 49180.). Any advice?
The error 49180 means that the external hard drive not mounting on Mac. But don't worry, you can get the workarounds from this article to fix the disk not mounting - com.apple.DiskManagement.disenter error 49180 and learn about its causes.
Way Overview for fixing com.apple.DiskManagement.disenter error 49180
| Workarounds | Steps |
| Replug the external hard drive | 1. Right-click on the unmountable drive in Disk Utility or the desktop. 2. Choose Eject. 3. Wait a moment and replug the drive to your Mac. |
| Change a cable & try another USB port | 1. Connect the external hard drive to Mac with a new cable. 2. Try connecting the drive to another USB port on Mac. |
| Restart Mac | 1. Completely shut down your Mac. 2. Press the power button to turn on your Mac and meanwhile hit Option - Command - P - R for 20 seconds. 3. Release the key when seeing the startup screen appear twice. |
| Check the drive with First Aid | 1. Open Disk Utility. 2. Select the drive and click First Aid. |
| Use Terminal to mount the drive | 1. Check the disk's identifier in Disk Utility in the Device column. 2. Open Terminal and enter diskutil mount /dev/disk2s2. Replace disk2s2 with your disk's identifier. |
| Recover data and reformat the hard drive | 1. Free download iBoysoft Data Recovery for Mac to recover files from the unmountable drive. 2. Open Disk Utility. 3. Select the drive and click Erase. |
Free download iBoysoft Data Recovery for Mac to help you rescue data from the unmountable hard drive on Mac.
Share the methods to help more people who also encounter this problem.
Why does com.apple.DiskManagement.disenter error 49180 appear?
This com.apple.DiskManagement.disenter error 49180 is a hint to tell you that the hard drive can't be mounted on your Mac with the Mount feature in Disk Utility. The causes that lead to the hard drive even not being mounted by the built-in Disk Utility Mount function include:
- Faulty communication between the external hard drive and Mac.
- The external hard drive is corrupted.
- System errors.
- Incompatible file system of the external drive.
- Software conflicts.
- Glitches from Paragon/Tuxera NTFS for Mac. (You can try iBoysoft NTFS for Mac which has high macOS compatibility)
Rescue data from the external hard drive not mounting on Mac
Note:
Since the external hard drive is not mounting on your Mac, you're recommended to recover files from the hard drive as a priority.
On the one hand, the unmountable drive may experience further corruption in the future, leading to it even not being detected and showing up in Disk Utility. If that happens, only the hard drive repair lab can help you repair the drive and get out the files. And that usually costs a lot.
On the other hand, the unmountable drive is caused by file format corruption to a large extent. In this case, you have to reformat the drive to make it mountable. However, formatting a drive will erase all data on it and reduce the data recovery rate for even data recovery software.
So, get down to restoring data on the unmountable external hard drive with iBoysoft Data Recovery for Mac first. This data recovery program supports recovering data from corrupted, inaccessible, and unmounted SSDs, HDDs, USB drives, and other devices.
Here's how to use iBoysoft Data Recovery for Mac to recover data from the unmountable hard drive on Mac:
- Free download and install iBoysoft Data Recovery for Mac on your Mac.
- Launch the software and select the unmountable drive from the window.
- Click "Search for Lost Data" and let it scan the files on the drive.
- Preview the scanning results and choose your want data, click "Recover" to save it to another external drive or to your Mac.
Share the way to help others recover data from the external hard drive that's not mounting on Mac.
How to fix com.apple.DiskManagement.disenter error 49180?
The com.apple.DiskManagement.disenter error 49180 is a specific error of com.apple.DiskManagement.disenter error. To get rid of it and mount your drive for file access, follow the methods in this part.
Fix 1: Replug the external hard drive
Perhaps, there're certain unknown errors that stop the system from mounting and communicating with the external hard drive. You can safely eject the external drive and wait a moment, then replug the drive to your Mac.
Fix 2: Change a cable and try another port on the Mac
Notably, a faulty cable and USB port can also block your external hard drive from being mounted on a Mac. So, if you also change a cable and replug your drive to another port on your MacBook Pro, Mac Mini, or other models.
Fix 3: Restart your Mac
Restarting Mac can exclude the temporary system errors that cause com.apple.DiskManagement.disenter error 49180 and refresh macOS to let it auto-mount the drive again.
Fix 4: Reset NVRAM/PRAM
NVRAM (non-volatile random-access memory) or earlier PRAM stores the OS-related information to keep the Intel-based Mac running properly. If your Mac feedback you the com.apple.DiskManagement.disenter error 49180 when it can't mount the drive with its Mount functionality, you can reset NVRAM to sweep away the possible corrupted NVRAM settings that cause this problem.
To reset NVRAM/PRAM on an Intel-powered Mac:
- Press the power button for seconds to completely shut down your Mac and wait a moment.
- Press the power to turn on your Mac and meanwhile press down the Option + Command + P + R keys for about 20 seconds.
- Release all the keys until you hear the second startup sound or the Apple logo shows up and disappears twice.
Fix 5: Run Disk Utility First Aid to check the unmountable drive
The First Aid feature in Disk Utility supports checking the file system errors on the drive and repairing tiny ones. It is worth noting that don't do other operations on the drive when First Aid is verifying it. Otherwise, your drive may corrupt. That is why some users say that their drives won't mount after running First Aid.
Here's how to use First Aid to check and fix the unmountable external hard drive:
- Open Disk Utility (Launchpad > Other).
- Click on the unmountable drive from the left sidebar.
- Click First Aid on the top toolbar > Run.
- Wait for First Aid to check and fix the drive.
After First Aid finishes checking, click the Unmount button in Disk Utility to mount the drive again.
Fix 6: Use Terminal to force mount the drive
When the Mount function in Disk Utility is not working, you can run commands in Terminal to force mount the drive.
- Find out the unmountable drive's identifier. Open Disk Utility and click on the unmountable from the left sidebar. Then, you'll find its identifier in the Device column.
- Open Launchpad > Other > Terminal.
- Enter the command below to mount the external hard drive. You need to replace disk2s2 with your unmountable drive's identifier. Then, press Return. diskutil mount /dev/disk2s2
Fix 7: Reformat the unmountable external hard drive
If the above ways fail to fix the com.apple.DiskManagement.disenter error 49180 and mount the external hard drive, it can exclude that the external drive is already corrupted. In that case, you need to format the corrupted external drive to make it workable and mountable.
But it is worth noting that, formatting a hard drive will erase all data on it. So, if you don't want to lose your documents, videos, photos, or other files on the drive, you can use iBoysoft Data Recovery for Mac to rescue your data. Only a data recovery tool can get files off a corrupted and unmountable hard drive.
After data recovery, you can get about formatting the external hard drive on your Mac.
- Open Disk Utility and select the unmountable drive from the sidebar.
- Click Erase.
- Set a name for the drive and choose a format for it.
- Click Erase.
If you think this post helps you solve the com.apple.DiskManagement.disenter error 49180, tell more people.
