You need to erase/format/initialize the ' parent' Drive level not the Container or 'child' Volume level. ref: Internet Recovery: Mac startup key combinations This is the issue- it was an incomplete initialization of the Parent drive as GUID/apfsįrom Internet Recovery or external bootable source> proceed to Disk Utility> View>Show All Devices> the parent Drive.
I'm going to erase all this and start over back in touch tomorrow, as my work schedule won't let me be here long enough today. But after installing Catalina I ended up with system folders on both volumes. I erased the SSD, the difference being that it was SSD and SSD - Data, instead of Macintosh HD and Macintosh HD - Data.
