reinstall Mac OS after erasing hard disk on Mac mini

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reinstall Mac OS after erasing hard disk on Mac mini

I followed instructions for erasing my HD on my Mac mini, using Disk Utilities (as I'm trading it in). When I tried to reinstall macOS Mojave, I got the error message: 'the disc is not formatted as Mac OS Extended (journaled). Use disk utility to enable journaling or reformat the disk'. However, in Disk Utilities there are no options to reformat the Base System and I don't know what 'journaling' means. Can you help please?

Mac mini, macOS 10.14

Posted on Apr 27, 2020 8:33 AM

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Answer 1

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leroydouglas

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Apr 27, 2020 9:10 AM in response to ssobd

Disk Utility>View>Show All Devices

erase/reformat the parent drive reinstall the macOS from Internet Recovery.

The OS X Base System is a recovery partition

How to reinstall macOS from macOS Recovery - https://support.apple.com/en-us/HT204904

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Answer 2

ssobd Author

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Apr 28, 2020 2:38 AM in response to leroydouglas

Thanks for the response. Using 'show all devices' in Disk Utility I can now see the Apple HDD parent drive. However, the 'erase' and 'restore' options are greyed out. I want to erase all my data prior to reinstalling macOS as I'm trading the MacMini in. Please could you advise further?

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Answer 3

ssobd Author

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May 5, 2020 7:08 AM in response to ssobd

Thank very much. I realised that starting in Internet Recovery was what I had failed to do. When I did that I could follow the instructions easily. 😉

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reinstall Mac OS after erasing hard disk on Mac mini

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