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Macintosh HD disappeared from disk utility! Please help.. it’s a new MacBook Pro M1 2020. This happened when I tried to restore the laptop to factory settings and reinstall macOS Big Sur
MacBook Pro 13″, macOS 11.0
While booted to the macOS installer (Recovery Mode or bootable USB installer) make sure to launch Disk Utility. Within Disk Utility click on "View" and select "Show All Devices" so that the physical drive appears on the left pane of Disk Utility. Then select the physical drive and erase it. I haven't had enough time to explore my M1 Mac yet so I'm not entirely sure what partition layout it uses, but you do want to select APFS (top option) for the file system. I did find this post with a different method of erasing the M1 SSD (first post):
https://forums.macrumors.com/threads/looking-to-reformat-or-erase-your-m1-mac.2272484/
Otherwise you may need to "Restore" the firmware, but you will need access to another Mac:
While booted to the macOS installer (Recovery Mode or bootable USB installer) make sure to launch Disk Utility. Within Disk Utility click on "View" and select "Show All Devices" so that the physical drive appears on the left pane of Disk Utility. Then select the physical drive and erase it. I haven't had enough time to explore my M1 Mac yet so I'm not entirely sure what partition layout it uses, but you do want to select APFS (top option) for the file system. I did find this post with a different method of erasing the M1 SSD (first post):
https://forums.macrumors.com/threads/looking-to-reformat-or-erase-your-m1-mac.2272484/
Otherwise you may need to "Restore" the firmware, but you will need access to another Mac:
Macintosh HD disappeared from disk utility! Please help..
