Drive external hard drive does not appear under "devices."

Hello

I just updated my OS to Sierra of MacOS. I have connected my external hard drive (HDD) and it does not appear under "Devices" in my Finder window. It worked fine before the update.

I use a MacBook Pro (end of 2013), currently running MacOS Sierra (Version 10.12). My external HARD drive is a SeaGate Slim SL Media (500 GB).

The external HARD disk appears in disk utility application. He also appears on the about this Mac > system report > USB. I don't know what the problem is, the external HARD disk is identified but does not appear for use in the Finder window.

I read that it could possibly be in mode 'sleep' and putting the MacBook to sleep (while it is plugged into the external HARD drive) and it to wake up again should solve the problem. However, it did not work. No more restarting my MacBook. It was mentioned in another post that it may require extra power, so I attached power adapter and again, without success.

I do not want to clear the contents of the external HARD drive.

Is there a way to get my external HARD drive works as expected with my MacBook?

Thank you much in advance.

I also have this problem.

My camera is Macbook Pro 13 "retina 2015 and Seagate Backup more 1 TB (NTFS - Paragon NTFS)

* Edit *.

My HDD show in report system > hardware > USB

but it does not show in Finder or Desktop.

Tags: Notebooks

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