When the Mac wakes after sleeping for an hour or so, the external drive spins up and the partitions are shown in the finder, but they can’t be read/written to and Time Machine backups fail. How can I fix it? Thanks

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Hello, I have same thing with mine. After MAcbook goes to sleep mode drive does not respond, although it is seen, the light is lit, no blinking. does not respond. I have to pull out the cable to restart. WD doctor utility did not find any issues. Regards

I have a 3 tb WD My Book. It’s not accessible after the Mac sleeps. The only way to use it is to restart the computer again. I have tried 1) firmware update, 2) uninstalling WD software, 3) changing the sleep setting so the drive doesn’t sleep and 4) changing the system preferences so it does not…

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WD My Book after sleeping not working on iMac

Portable Drives My Passport

jebusx April 18, 2019, 2:58pm 4

Read this post, 4TB My Book Unable to access after sleep Mac
It might have something to do with WD software if you have it install in your system.

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WD My Book after sleeping not working on iMac

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