Okay, so, not working. I got through the point where it is installing, but it freezes at the typical 2 minutes left mark. Restart, but I wasn't sure which drive to boot from: The preboot install, or the install from disk (NOT the install from USB anymore). I tried either, and with either I get to the installing bar point but it gets maybe 10% through, and does not progress further. Have tried restarting again, with same issue of getting maybe 10% of the way through the install on the black screen with the white apple logo and progress bar. EFI folder posting time, or is this a typical issue people have for which there's a different fix?