USB drives are ejected and mounted constantly

petalino

macrumors regular
Original poster
Nov 21, 2010
203
12
Hello.

I have this annoying problem:
OS Yosemite
27 inch Imac Late, 2013

I have 4 USB drives connected to the Mac via a self powered Belkin hub.

During daily use (I never switch it off overnight), all USB drives are being ejected and remounted several times during the day, as I am working.

I also get a message: "disk not ejected properly".

Any ideas why this might be happening?
Is this in any way harmful to the drives? Its been happening for almost one year now.
 

Ebenezum

macrumors 6502a
Mar 31, 2015
782
259
I had problems with external USB drives with Yosemite, 10.10.4 or 10.10.5 fixed those issues and I don't use hub so I am not certain if its related to your case.

Have you contacted Belkin support for any potential issues with Yosemite?
 

petalino

macrumors regular
Original poster
Nov 21, 2010
203
12
Thanks.
I should have mentioned that I am using WD MyBook Drives