Error Code 50 after Sleep Time Mac Sierra

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 ?

Hello,

See if this helps
https://support.apple.com/kb/TA20831?locale=en_US

Sadly not … It’s simplier than copy file, after sleep time I cannot read/create or copy any file without force unmount :frowning: