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blacka4

macrumors 6502
Original poster
Sep 28, 2009
424
49
Pittsburgh
Guys so I think I messed up big time. I bought a Samsung ssd and tried to install Big Sur using a online guide from high serria but now I’m trying to just go back to original and start over. I missed the whole needed APFS stuff.

Also no matter what I did I can’t get to boot on it’s own and get past the gray do not enter symbol.

The only way I can get it to boot is to Hold down the option button but I get this error when I old down the option button and can’t seem to make it go away

Just trying to get back to a stable high serria install on a platter drive (currently restoring from time machine to this drive) to be able to normal boot and attempt a upgrade to Catalina

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