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I have x3 Macintosh HD's since Catalinas Upgrade (How can I delete them)

Since upgrading - macOS Catalina crashed on the upgrade and started again leaving me with two Macintosh HD

it then crashed again and left me with x3 Macintosh HD's and Macintosh Data x3

I now have Catalina and would like to reverse back to Mojave but don't have any space now because my disk is full of upgrades...... that I don't want


If I use Utility and hit erase then delete then reappear.... they are not partitions


Posted on Oct 20, 2019 11:11 AM

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Posted on Oct 20, 2019 11:18 AM

You do not say what exact Mac /model /year /size /retina /touchbar is this

or

what exact macOS you were currently running before the upgrade?




If it were me I would boot to Internet Recovery or a bootable installer and use the Disk Utility to reformat the parent drive.


DiskUtility>View>Show All Devices. This will wipe the drive in total. Reformat as GUID/apfs and then quit Disk Utility.


From this same Revovery you can reinstall the macOS as new then restore your user data from Setup assistant or from a TimeMAchine backup.



Recovery: https://support.apple.com/en-us/HT204904

How to use Time Machine to back up or restore your Mac: https://support.apple.com/en-us/HT201250

Boot clone https://discussions.apple.com/docs/DOC-10081


1 reply
Question marked as Best reply

Oct 20, 2019 11:18 AM in response to 22spoons

You do not say what exact Mac /model /year /size /retina /touchbar is this

or

what exact macOS you were currently running before the upgrade?




If it were me I would boot to Internet Recovery or a bootable installer and use the Disk Utility to reformat the parent drive.


DiskUtility>View>Show All Devices. This will wipe the drive in total. Reformat as GUID/apfs and then quit Disk Utility.


From this same Revovery you can reinstall the macOS as new then restore your user data from Setup assistant or from a TimeMAchine backup.



Recovery: https://support.apple.com/en-us/HT204904

How to use Time Machine to back up or restore your Mac: https://support.apple.com/en-us/HT201250

Boot clone https://discussions.apple.com/docs/DOC-10081


I have x3 Macintosh HD's since Catalinas Upgrade (How can I delete them)

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