MBP won't recognize ext HDD in finder

[ben824]

My late 2011 13" MBP running Sierra won't recognize my Seagate external HDD in finder. It shows up in Disk Utility and I plugged it into one of our windows computers here at work and it showed up. I have only ever used this drive with my MacBook and it worked perfectly when I first got it but I was running El Capitan back then. I tried using the first aid feature in Disk Utility and it did nothing. I tried to mount the drive and it did nothing as well. I am not sure what to do next.

 

[Fishrrman]

I realize this may seem like a dumb question, but did you check your Finder preferences (general pane) to be sure that "external disks" are indicated to show on the desktop…?

 

[ben824]

I realize this may seem like a dumb question, but did you check your Finder preferences (general pane) to be sure that "external disks" are indicated to show on the desktop…?

I checked and it wasn't so I made sure it was but it didn't fix it. Apparently now you need a special driver program that allows a Mac to recognize a Seagate Ext. HDD in Finder