crwdns2934241:0crwdne2934241:0 mayer

crwdns2934249:0crwdne2934249:0:

This most likely happened when you upgraded to High Sierra.  The problem is most likely with your SSD as Apple doesn’t like you doing 3rd party upgrades and has tried to imposed APFS formatting to the SSD drive.

I would pull that drive reformat it GUID and only take the machine as high as Sierra.

crwdns2915684:0crwdne2915684:0:

open