USB External Troubleshooter. It appears that you have formatted your external hard drive in Mac OS Extended format, which is not supported in Windows. When it won’t get recognized on multiple devices, try using your cables with another external HDD. I've tried on 2 separate Macbooks, and have tried multiple different cords. If your Seagate hard disk flashes and beeps instead of making normal spinning sound when plugged in, it could be a power issue. MAC Does Not Recognize Seagate External Hard Drive:Faulty USB ports or system failure can be a reason for inaccessible Seagate drive on Mac. Repair external hard drive by using Disk Utility. 5th: Make Sure Support the Drive … ... if you can't get the drive showing up on a Windows PC, try plugging it into a Mac. Why is your Seagate hard drive not showing up? Fix Seagate (External) Hard Drive Not Working, Detected, Recognized. Reason 2 , when you accidentally delete a file you want, then you can bring that file back as well. Seagate Photo Drive. Even though I can't see it at all. If Seagate external hard drive flashing but not showing up then it can be a possibility that all the ports of your Mac/Windows are not working, that is why you should use connect external drive into another Mac or windows. Although it can be challenging to get your hard drive to mount to Mac correctly, it is usually a solvable problem. The issue I am seeing that I can't boot so I decided to go to recovery mode. This has been an issue on my MacBook Pro for a while and I’m getting frustrated now. However, the Utility Disk tool doesn't show my main hard drive only 1 disk0 with size of 1.39GB. You can update macOS by going to the System Preferences under the Apple menu . ; Try plugging the drive into a different … This software can recover data from all Mac OS X including High Sierra, macOS Sierra, El Capitan, Yosemite, etc. first off - thank you for your time (: my seagate hard drive (1 tb) flashes and lights up when i connect it to my macbook (2012 model) but it doesnt show up on my computer! Why External Hard Drive Not Showing up on Mac. When your Mac is not recognizing the external hard drive, use Disk Utility to mount and repair the unrecognized external drive. 1. Read Also: How to Factory Reset MacBook Pro. Using Our External Hard Drive. Step 1: Open Device Manager and select the category of the driver. Seagate hard drive not showing up on Mac? Seagate external hard drive detected but not showing up might be the result of pending updates. It was perfectly working fine and all of a sudden it stopped working and it does not appear on the finders. When your Seagate hard drive not working, it is usually about external hard disk not detected, not recognized, or not showing up. a. Connect the external hard drive to your Mac and copy the important data to the Mac PC. So if anything happens to your Mac you can restore your entire Mac from a Time Machine backup. External Hard Drive Not Showing Up Issue. here is the list of disks I have when I run diskutil list. If we were to pick one, Disk Drill seems to be the most well-rounded, offering plenty of customizations and power in an easy-to-use interface. My WD Hard Drive has always worked fine. Get your Windows computer connected to seagate external drive or WD passport. USB port troubles. If none of these steps worked, the issue is likely with the drive itself. Final Verdict: External Hard Drive Not Showing Up on Mac. 4th: Using Another Mac/Windows. P.S. For people who were using Mac and found that your Mac couldn’t recognize Seagate external hard drive, please follow up below steps to fix it with ease. Above are the top 10 situations as well as the solutions for new hard drive not showing up/external hard drive not showing up. If the USB port on your computer is not able to provide sufficient power to spin up the drive, it could cause the Seagate hard drive beeping. The USB port is not working. If you have any questions or better suggestions, let us know by tying them in the comment section below. I have a 1TB Seagate Backup Plus external hard drive, and it won’t show up in my Mac Pro. After checking your USB and cable connections, the following fixes can typically resolve the problem with an external hard drive not getting recognized. Try some basic routine checks. If your Seagate external hard drive has only one partition that is recognized, you can use This PC. As we are trying to connect Seagate hard drive to the computer, we will choose the Universal Serial Bus Controller category. What to Do When Your External Hard Drive Won't Show Up. If you can't see the external hard drive on Mac, you can get Finder to locate the external hard drive. If the hard drive has more than one partition or the partitions are not showing up, try using Hard Disk Drive to scan the entire disk. Make sure the Seagate External Hard Drive is connected well by re-plug it. Some external hard disks get power from computer through data cable. I have turned my computer on and off and unplugged the external hard drive. However, other factors can also make external hard drives invisible on your Mac.