Trying to use Knoppix to examine troubled MacbookPro hard disk, won't let me use a different startup disk
Following onto the discussion at "Recovery stuck on "examining volumes" , I've tried to follow all the steps HWTech outlines to have Knoppix allow a look at the hard drive.
I got as far as opening the EPI drive, but the computer says I can't use a different startup hard drive without going into Recovery mode first. Of course, I have the endless "examining volumes" problem that led me to Knoppix in the first place, so that is not an option.
I do see an option to connect to another Mac using a Thunderbolt cable, and setting up the Macbook Pro as a target disk, but my older Mac Mini doesn't have the Thunderbolt 3 or 4 style of connector.
Any ideas? Thanks in advance.
MacBook Pro 16″, macOS 11.6