The WD My Passport is one of the most popular external drives in the world. It’s also one of the most common drives I see when something goes wrong. If yours has stopped showing up on your Mac, here’s how to work through it systematically, starting with the cheapest and easiest explanations and ending with what to do when it’s something serious.
Start here: the cable and the port
I know this sounds basic. Do it anyway.
Try a different cable. The USB-C to USB-A or USB-C to USB-C cables that come with My Passport drives fail more often than you’d think. The connector joint (where the cable meets the plug) takes mechanical stress every time you plug and unplug it. A cable can look perfect and still have an intermittent internal break.
Try a different port. If you’re on a MacBook, try a different USB-C port. They’re not always identical in terms of controller assignment, and occasionally a port will have issues that another won’t.
Try a USB hub if you’re using one, or remove the hub if you’re not. Passive USB hubs (the ones without their own power adapter) don’t always supply enough power for bus-powered drives. A My Passport needs up to 900mA. Some hubs don’t deliver that reliably.
If the drive appears after trying the above: problem solved, cheapest fix possible.
Check Disk Utility
Open Disk Utility (Applications → Utilities → Disk Utility, or Spotlight → “Disk Utility”).
In the sidebar, make sure View → Show All Devices is enabled. Without this, Disk Utility sometimes doesn’t show drives that can’t mount.
Look for your drive in the sidebar. There are a few possible states:
It shows up, with a volume you can mount. Click the volume and hit Mount. If it mounts, you’re done. If Mount is grayed out or fails, try First Aid.
It shows up, but grayed out or with a yellow warning icon. The drive is being detected but the file system has an issue. Try First Aid. If First Aid says it can’t repair the volume, we’re in logical recovery territory. The data is likely still there, but the file system metadata is damaged enough that macOS can’t work with it normally.
It doesn’t show up at all. The drive is not being detected at the USB level. This points to a hardware problem: either the drive’s USB controller, the drive itself, or the cable/port (which you already ruled out).
Check System Information
Go to Apple menu → About This Mac → System Report (or System Information), then select USB in the sidebar.
Look for your WD drive in the USB device tree. If it’s there (even if it’s not mounting in Finder) the USB controller is seeing it. That’s actually useful information: it means the drive’s USB hardware is partially functional.
If it’s not in the USB tree at all, the drive is not communicating at the USB level. For a My Passport, this often points to the internal USB bridge controller failing: a controller board inside the enclosure that translates between the drive’s SATA interface and the USB port you’re plugging into.
The enclosure controller issue
Here’s something that saves people a lot of money when they know about it:
The WD My Passport is a regular laptop hard drive inside a custom enclosure. The enclosure has its own circuit board with a USB bridge controller. This controller fails more often than the drive itself.
The complication: WD My Passport drives use a proprietary encrypted controller. The drive’s data is encrypted by the controller board, and you can’t simply remove the drive and connect it directly via SATA. You’ll get garbage data. You need the specific controller board from that specific drive (or a matching one from the same model batch) to decrypt it on the fly.
This is why “just take the drive out of the enclosure” doesn’t work for My Passports the way it does for most other external drives.
What I can do: I have adapters for common WD My Passport controller families. If your drive’s problem is the controller board, I can often bridge around it. If the board is completely dead and I can’t identify the encryption key from it, options become more limited.
When it spins up but doesn’t mount
If you can feel or hear the drive spinning when you plug it in, but it still doesn’t show up: the drive motor is working. That’s good. The problem is either in the USB bridge, the drive’s firmware, or the file system.
Try it on a different computer. Not because a different computer will magically fix it, but because macOS sometimes has a bad interaction with a specific drive state. Windows will often mount a drive that macOS is struggling with, or vice versa. If it shows up on Windows (or in a Windows VM), you have more options.
Listen carefully. Does it spin up normally, or do you hear clicking, grinding, or a motor that sounds like it’s struggling? If it’s making abnormal sounds, stop and read this guide on clicking drives before doing anything else.
When to call it
If you’ve worked through the above steps and your drive:
- Doesn’t appear in System Information at all
- Appears in Disk Utility but First Aid fails with errors
- Makes clicking or grinding sounds
- Spins up inconsistently, or doesn’t spin up at all
…it needs professional evaluation. The longer you keep trying things, the worse a potentially recoverable situation can get.
At that point, power it off, leave it off, and fill out my intake form. Tell me what you’ve tried, what the drive shows in Disk Utility and System Information, and what sounds (if any) it’s making. I’ll assess it and tell you what I think is going on.
Quick summary
| Symptom | Try this first |
|---|---|
| Not showing in Finder | Check Disk Utility, try a different cable |
| Grayed out in Disk Utility | Run First Aid |
| Not in System Information | Suspect cable, port, or USB bridge controller |
| Spinning but not mounting | Try on another computer; listen for abnormal sounds |
| Clicking or grinding sounds | Stop immediately, power off, contact a recovery specialist |
WD My Passport not showing up and you’ve already tried the basics? Start a case and I’ll take a look.