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setting up external hard drive for Time Machine

I bought a Western DIgital 4TB 'My Passport for Mac' '2629 Media' 'Time Machine Ready' hard drive to use for Time Machine but the routine setting up wouldn't work.

So, I looked up the problem in Communities 'Help' and followed the advice - go to to 'Apps' - 'Disc Utility' - Mac OS Extended (journaled) and GUID partition map - click 'erase'.

But no joy.

Could anyone suggest what I'm doing wrong and how to do it right?

I'm on macOS Big Sur version11.4

Thanks

iMac 27″, macOS 11.4

Posted on Jul 4, 2021 9:04 AM

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Posted on Jul 4, 2021 11:49 AM

For TM using 11 & up it needs to be APFS format & GUID.

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setting up external hard drive for Time Machine

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