Hello There
Really upset by this problem. After sleep Time of my Imac 27 with Mac Sierra 10.12.1 I’m not able to work with my “Passport USB 2 To for Mac”. I have this (error code 50) when I want to create a Directory, When I want to put a file, when I want to access everything on this External Hard Drive.
I tried everything from checked the option “sleep drive when possible” in Mac Parameter . . . The only solution is to unmount the drive, unplugg it and replug after sleep time …
Any clue ?