External hard drives do not mount after macOS Sierra Upgrade I just upgraded to macos sierra, and my hard drive (USB) is not editing (which still appear in disk utility).   Any ideas?

It is an NTFS drive and needs a driver from Seagate.

See: http://www.seagate.com/gb/en/support/downloads/item/ntfs-driver-for-mac-os-maste r - dl /

Tags: Mac OS & System Software

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