Faulty connections such as the wobbly USB port and broken USB cable.The external drive is encrypted or password-protected, especially for Seagate Backup Plus Ultra Touch hard drive.A recent macOS update or software update could cause many types of incompatibility.What may render Seagate Backup not showing up on Mac are as follows: There are various reasons that may cause a Seagate Portable drive not to show up on Mac, and here are the common ones. And sometimes the external hard drive even greyed out in Disk Utility. Why is Seagate Backup Plus not showing up on Mac?Īctually, it's common to see Seagate Backup Plus Portable Drive for Mac not working, Seagate Backup Plus Ultra Touch not recognized, or other Mac Seagate external hard drive not showing up. Check if the Seagate Backup Plus drive is showing up in Disk Utility Show Seagate Backup Plus drive in Finder and on Mac desktop Basic troubleshooting for Seagate Backup Plus drive not working on Mac Why is Seagate Backup Plus not showing up on Mac? Guide to Seagate Backup Plus not showing up on Mac: So, it's important to know why and how to fix when the Seagate Backup Plus drive is not showing up on Mac. If you also experience Seagate Backup not working on Mac, you can't see files on the external hard drive or access them at all.

I searched for all day but no Seagate firmware update available (attempt to update shows it to be current) and no other help available from Seagate 'support.' Can anybody help me cuz I'm really in need of the files on this drive? I can see the light on HD so I am sure it is getting power. Since I upgrade to Yosemite (maybe coincidental?), I find the Seagate hard drive light on but not detected on Mac. I use a Seagate 2TB Backup Plus Portable HD as my Time Machine backups drive and it had been working fine. However, many users have reported issues such as Seagate Backup Plus drive not working on Mac, Seagate Backup Plus Slim not detected, or the external hard drive not showing up on Mac. And they have several options like Ultra Touch, Slim, and Portable. Seagate Backup Plus drives are great external hard drives for Mac and PC.

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