Trying to reinstall Catalina - Macintosh HD is unmounted & can't be unlocked

[AVR2]

So I've got myself into a mess trying to do a completely clean reinstall of Catalina on a 2019 MBP 16".

I've managed to engineer a situation where "Macintosh HD" is unmounted and won't mount. I also can't run First Aid on it.

Every time I try, I get an error saying "A problem was detected with the disk that prevented it from being unlocked".

Genuinely don't know where to go from here.

 

[dsemf]

So I've got myself into a mess trying to do a completely clean reinstall of Catalina on a 2019 MBP 16".

I've managed to engineer a situation where "Macintosh HD" is unmounted and won't mount. I also can't run First Aid on it.

Every time I try, I get an error saying "A problem was detected with the disk that prevented it from being unlocked".

Genuinely don't know where to go from here.

View attachment 1672576

If you are really doing a clean install, erase the disk drive which will remove any volumes. Click on View and select Show All Devices. Select the top level and click on Erase.

DS

 

[AVR2]

Thanks! That worked.