It may not be the hard drive. I’m fairly upset. Open Device Manager > Expand Universal Serial Bus controllers. The only option is to contact the disk manufacturer for help. 1. —Macworld. 2. powered up the little power supply board and plugged in a 120 GB disk. The light still comes on and it doesn't make any clicking noise, but it just doesn't show up on my computer anymore. Otherwise, on a healthier external drive, this option works flawlessly. Seem like a basic design faults to me. Plugging directly into a wall plug resolved the problem. So, based on the process of Mac recognizing a WD hard drive, we need a thorough check to know which part makes the WD hard drive not working on Mac, and then fix it. 1. Or your Mac may give you a message asking whether you would like to format the WD My Passport drive. But it doesn’t need to be. 3. According to the manual these are compatible with Mac OS X versions Mavericks, Yosemite, El Capitan and Sierra. WD external hard drive not recognized Windows 10. Whenever I plug it in my USB 2.0 port, it works fine but in USB 3.0 port, constant white led is there and doesn't blink. Then reconnect the external hard drive … So in my case, both the disk and electronics were kaput! Click Scan. I m having exactly the same issue…but Im connecting the WD 2TB to my dell inspirion Laptop , OS : Win 7, Well tried connecting the WIndow server 2003, No sound that the device is detected, no sound in the hard disk either, .the 2TB is just  5months old and I have recently moved all my documents,movies,pics,music into the 2 TB…so please help  ( P/N number :WDBAAU0020HBK-01). If that does not correct the behavior, and if the drive is also not detected by your computer, the blinking light is probably a symptom of a larger problem. The reason being, there are equal chances of USB Port damage. Tried changing the power cable with another 2TB I have but that didn’t work either. The Free version helps you save 2GB files, so verify the recovery quality of our product before purchase. If it’s still in warranty try calling WD and see if they will send a replacement. I accidentaly dropped the disk, the light is blinking, the device is recognised in bios mode and in device management but i cant see it on my computer. Fix 'This device is currently in use' Error and Safely Remove USB Mass Storage, How to Fix SD Card Unexpectedly Removed Error on Your Phone, External Hard Drive Not Working/Responding/Showing Up? Hi there, I’m having the same problem with a 1tb drive, computer won’t regognise it, light blinks, and i can hear it spin up when it first powers up. Use anti-virus software or CMD to remove the virus or malware on your PC or WD external hard drive first. Here's what to do if your device is not detected in Windows and Mac. Before initiating the process to fix the issues with your hard drive, some external drives have power cables or a physical power switch, which should be ON at all times for you to perform operations on the disk. In addition, the following reasons may also lead to WD My Passport for Mac not showing up or not working. Here you have three options to quickly fix, and repair WD external hard drive with the "light on but not recognized" error: If the WD external hard drive cannot be detected or fails to show up in your PC, please change the USB port (You may try to connect the external hard drive to the motherboard), or connect it with another new USB cable to see whether it shows up in the PC. I just plugged it in again after changing locations (upstairs/downstairs) and the light blink only once or twice - then stops. You can preview the file by double-clicking on it. I used to connect my WD external HD to my laptop and it was easily accessible in my computer as if it is laptops internal drive. Concetta_Gomez November 16, 2015, 3:59am #1. my old hard drive is showing on both mac and windows… now my new hard drive is showing on mac but not showing on windows. Fortunately, there is a solution. I have tried different ports and different laptops with Windows 10 but the problem is still the same. Click View in the device manager > Select Show hidden devices. So, it's essential to make it works fine all the time. Did you try moving the power supply to a different plug not in a surge protector? I was not actively reading or writing to the external hard drive, but it did have a list of directories open (no individual photo files, but just the directory names). The drive works … any help will be appreciated … The flashlight of WD external hard drive continuously blinking when I connect the drive with USB cable. Hello, my name is Mac. There was no fall or energy issues as far as I know. Sometimes, an external hard drive not showing up on Mac just because the USB cable or the USB port on your Mac is bad. 3. If the drive contains absolutely essential data, the best practice is to leave it powered off. Hi I’m having the exact same problem. I was ready to pull my hair out. So, if you notice that external hard drive light is blinking but it is not getting read by the system, then you can try to connect the hard drive to another system and check if it is getting recognized.