Summary: This article analyzes why the WD My Passport for Mac hard drive is not mounting on Mac and how to fix this issue. If you worry about losing data from this hard drive, you can recover lost data with iBoysoft Mac Data Recovery at first.
Overview of WD My Passport for Mac hard drive
The WD My Passport for Mac hard drive is specially designed for Mac mini computers, iMacs and MacBooks. This trusted portable storage always offers quick and easy way to expand the storage space of your computer and to store a massive amount of photos, videos, music and documents. The WD hard drive comes in some amazing features like cloud storage, password protection with hard drive encryption, and compatiblity with Apple's Time Machine backup software. But the problem is that no matter how powerful this hard drive is, it is possible that this WD My Passport for Mac hard drive is not mounting on Mac computer.
Here is one typical case from apple.stackexchange.com:
My WD hard drive (WD My Passport for Mac) didn't mount on my MacBook Air, not even in Disk Utility. I have 1 TB family photos on this hard drive, which are very precious for me. How to fix WD My Passport for Mac hard drive not mounting error? Any data recovery solution? Thanks a lot!
In fact, this is a common annoyance for many WD customers that the hard drive fails to mount in Finder or Disk Utility. If you are confronted with the same issue and haven't got an effective workaround to fix this unmounted drive on your Mac, check this page and learn why it happens and how to address this disk problem.
Why WD My Passport for Mac is not mounting?
This issue may be caused by various factors, such as virus infection, internal file system errors, sudden power failure, sudden power outage, unwanted interruption during transferring data, etc. For all kinds of reasons, your Mac won't recognize this hard drive and thus this external hard drive won't mount. As a result, you can't open this WD hard drive nor access your important files.
How to fix the unmounted WD external hard drive on Mac?
Step 1: Check whether the WD My Passport for Mac hard drive is set to show up on Mac
Go to Finder > Preferences and confirm if the "External Disks" under "Show these items on the desktop" is selected. This will ensure if the external drives connected to this Mac are allowed to show on the desktop.
This operation will show up your WD My Passport drive on the desktop in most cases, but if it failed, you can move to the next point.
Step 2: Check if the WD Mac hard drive is showing up in Disk Utility
You can go to Utility and see if this hard drive appears in the left sidebar. If your WD hard drive for Mac is not mounting but grayed out in Disk Utility, you can right-click and select the "Mount" button to mount it manually. However, if this external hard drive is corrupted, the "Mount" button will not be available.
When these two checks didn't make any difference and the WD My passport for Mac hard drive is not mounting still, you need to check some hardware that get involved in the disk connection. Let's start with the basics by following the steps below.
Step 3: Check the power supply
It's well known that insufficient power supply or damaged USB ports could also lead to hard drive not mounting issue. Therefore, you should make sure the WD My Passport for Mac hard drive is getting the appropriate power. If the drive came with a Y-cable, use both USB connectors. Moreover, do not connect the drive through a USB hub, connect it directly to the Mac. Make sure the power adapter is connected directly to a wall outlet, not to an extension cord.
Step 4: Check the USB cable
Ensure the cable is properly connected to both the drive and computer. Then try connecting your WD My Passport for Mac hard drive with a new USB cable if you can fetch another one.
Step 5: Check the USB port
If the problem still continues, try using a different USB port. Perhaps your Mac has two USB port - the back and front ones. Assuming the external hard drive is plugged in the front USB port, try to insert the drive to the back USB port.
Step 6: Check for driver update
If the hardware seems to be OK, let's check the software that related to this disk problem - the driver. A driver is a software component that allows the operating system and a device to communicate with each other. If your driver files go missing, outdated, or turn corrupted due to any virus invasion or invalid operation, the hard drive attached to your Mac will faile to work, resulting in an external hard drive not mounting on Mac.
Step 1: Click the Apple icon and select "App Store…"
Step 2: Click Update (NOT UPGRADE!) to install a specific update or Update All to install all available updates.
But sometimes, a hard drive is not mounted because of internal disk errors like file system corruption, partition table lost, the directory is corrupted, etc. You WD hard drive will not be recognized by your Mac in these cases. Fortunately, you can fix the hard drive not mounting issue with the native disk repair tool, Disk Utility.
Step 7: Run First Aid to fix WD My Passport for Mac not mounting error
Disk Utility's First Aid is a Mac built-in tool to verify and repair minor problems of a hard disk. Whenever you have troubles with a hard disk, First Aid is your first solution.
Step 1: Go to /Applications/Utilities/Disk Utility/, then click Continue.
Step 2: In the sidebar, select the not mounting WD My Passport for Mac hard drive.
Step 3: Click the "First Aid" button.
Step 4: Click Run.
If Disk Utility reports that the WD My Passport for Mac hard drive appears to be OK or has been repaired, you're done. Otherwise, you have to retrieve as much of your data as possible.
How to fix WD My Passport for Mac hard drive not mounting error without losing data?
However, if First Aid is unable to fix WD My Passport for Mac hard drive not mounting error, the last solutions is to reformat the hard drive. But reformatting will delete all data stored on the hard drive, and most of the time, many important files are stored on the WD My Passport for Mac hard drive. If you haven't backed up important files, it's high time to recover lost data from the unmounted hard drive first.
Step 1: Recover lost data from unmountable hard drive with iBoysoft Mac Data Recovery
As for Mac data recovery, iBoysoft Mac Data Recovery is highly recommended. iBoysoft Mac Data Recovery is a free Mac data recovery software that can easily recover lost data from not mounting WD My Passport for Mac hard drive, recover lost data from unreadable hard drive, recover lost data from unrecognized hard drive, recover lost data from corrupted hard drive, recover lost data from unmountable hard drive, recover lost data from inaccessible hard drive, recover lost data from uninitialized hard drive, etc. on macOS Catalina 10.15/Mojave 10.14/High Sierra 10.13/10.12 Sierra and Mac OS X 10.11/10.10/10.9/10.8/10.7.
Besides, iBoysoft Mac Data Recovery is also best APFS data recovery software that can recover lost data from formatted APFS hard drive, recover lost data from unmountable APFS drive, recover lost data from unreadable APFS hard drive, recover lost data from corrupted APFS drive, recover lost data from encrypted APFS volume, recover deleted/lost APFS partition, etc.
1. Free download and install iBoysoft Mac Data Recovery.
2. Launch iBoysoft Mac Data Recovery and select the unmounted WD My Passport for Mac hard drive.
3. Click "Next" to search for all lost files on this drive.
4. Preview the listed scanning results, choose files we want, and click "Recover" button to get them back.
Step 2: Fix WD hard drive not mounting error by reformatting
After getting lost files back, you can fix WD My Passport for Mac hard drive not mounting error by reformatting without worrying about losing data.
1. Launch Disk Utility from Utilities.
2. Select the unmounted WD My Passport for Mac hard drive on the left part of the window.
3. Click the "Erase" on the top of the Disk Utility window.
4. Complete the related information (name, format, scheme, etc.), then click the "Erase" button.
This article mainly talks about a WD My Passport for Mac hard drive not mounting issue, analyzing why this issue occurs and how to repair this disk error without losing files on this drive. You can also easily recover lost data from external hard drive with iBoysoft Mac Data Recovery if the drive is corrupted due to virus attack, corrupted file system, power failure, etc.
For any questions or suggestions, please email us below. Thanks a lot!