looking for some help:
i have an early 2009 macmini 3,1. I had previously patched it to work with macos High sierra, and then patched it again to work with macos mojave, both times using the dosdude1 patch. both patches worked fine.
Yesterday, however, I restarted my macmini and it did not boot correctly: it would run the preboot apfs patch, then show the prohibited sign. After many wipes and installs, repatching, updating preboot, I have gotten nowhere.
I was able to successfully reinstall and boot el capitan, but when I tried to reinstall macos high sierra via patch tool i encountered the preboot patch then prohibited screen. The preboot patch did provide an error however: “cannot find apfs system volume” then it would restart and boot into my usb patch volume. Ive tried installing as mac os extended journaled as well as apfs and both ways I get the prohibited screen.
Does anyone have any advice?