I find Disk Utility to be quite useful, in its limited way, but if the disk misbehaves I think it can send misleading information to the system which can fool Disk Utility.
I use Disk Warrior as my next step in diagnosis and rectification, but if the drive is more than around 3 years old I give up and buy a new one.
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Dear Jude,?
Sorry to say this but the apple disk utility is pretty near to useless. Ask other guys here for advice. Maybe drive genius? Harvey & Chris can advise you better here I think
John
On Friday, 6 December 2019, 11:48:00 GMT, Judith Hall <
glenidol@...> wrote:
The drive passes the Apple Disk Utility First aid - says its ok. And I downloaded WD own utilities and it passes that.
So as I have repeated messages it can't back up to "Time Machine".....and also the thing has basically gone to sleep when the Mac goes to sleep and hasn't woken up. I truly think the discussion on the link above really is the answer as to why its not been behaving since I put it on the iMac Pro with Mojave.
My remedies would seem to be wipe this drive and make it a Carbon Copy Clone.... or (b) buy a different brand drive to set up as a TM - one that is compatible.
I am dealing with a WD support person who did answer my support request very quickly but it seemed obvious to me she knew little about Macs and Tm -- but I have sent all the snapshots she has asked for and I await her conclusions.
Jude
zuiko