![]() If you remove your hard drive before ejecting it from Mac, fsck will automatically scan and repair it the next time you use it. This will command your Mac to restart itself. Step 3.Once the process is complete, type reboot. Once the white text stops appearing, type the following command and hit Return. ![]() Step 2.You’ll know that you’ve successfully booted into Single User Mode when you see a window that looks like the Terminal app. ![]() As soon as it starts to reboot, press and hold the Power button and the CMD + S keys at the same time. To resolve this problem, you can use Mac’s File System Check command or FSCK through Single User Mode. ![]() Your external hard drive may not be mounting because of a file system issue. Method 4: Use the fsck Command in Single User Mode Then, manually mount your hard drive in Disk Utility by selecting your drive or volume in the left sidebar and clicking the Mount button. Step 3.In the dialogue box that appears, click Run. Step 2.Select your drive from the left sidebar, then click the First Aid button at the top of the window. Step 1.Launch Disk Utility (Finder > Applications > Utilities). These may prevent your drive from properly mounting.įortunately, First Aid is a feature of the Disk Utility app, which can recognize unmountable drives or partitions. Method 3: Use First Aid in Disk Utilityįirst Aid is a useful tool that finds and repairs disk errors – specifically, it scans the drive and its partitions for issues related to its structure and formatting. This will automatically close all running apps and reboot the operating system. To get your system going, a simple restart might solve the problem. You may also have a lot of apps running in the background using up the resources macOS needs to properly recognize and mount your drive. Method 2: Restart your MacĪ temporary bug or glitch may have simply gotten macOS stuck while it attempted to recognize your drive. If it works on a PC, then it’s likely a formatting problem – we wrote more about that in the section of this article that covers other common DiskManagement Disenter errors. If it works on another Mac, then your Mac might be experiencing glitches due to a faulty update or other issue. If your drive doesn’t work on other machines, then the problem likely lies with your drive. To figure out which methods to try first, connect your drive to another Mac or even a PC. Method 1: Connect Your Drive to Another Macĭisk Utility errors can be caused by either your drive or your Mac. To set your drive to read only mode, right-click your drive > Get Info and scroll down to Sharing and Permissions. We suggest opening your external hard drive in read only mode and copying your files to a separate storage device or to the cloud. There are several ways to address this specific error code, but most fixes can potentially harm your data. Beyond those common reasons, error 49153 may occur simply due to malware, bugs, issues while resizing partitions and interference from local Time Machine backups.ĭon’t worry – we’ll show you how to get rid of this pesky error in the next section. Or, you may be using a Mac Superdrive while running macOS Catalina. You may have an incompatible file system. Several factors could lead to this problem. In this scenario, you’ll probably encounter an error that says “Could not mount *name of the drive*”( error 49513). If it doesn’t show up there, you should still see it in Disk Utility (Finder > Applications > Utilities) where you can also attempt to mount it.īut there are cases when your external hard drive won’t mount, even using Disk Utility. When you plug in your external hard drive, the system mounts it and makes its contents viewable in Finder. What is DiskManagement Disenter error 49153?
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