Can’t see Macintosh HD in Disk Utility or Recovery
I can’t see Macintosh HD in either Disk Utility or in the Recovery Assistant. I’ve been using an external hard drive as startup for the past few months, and now want to erase my Macintosh HD (assuming this is what the built-in internal drive is called), but it doesn’t show up. I can see all other external drives but no internal drive whatsoever. What is wrong?
iMac 27", macOS 10.15