It would be useful to add some information after booting with "-v" boot parameter (verbose mode), but what you describe may just be a kernel panic. I had the same thing after upgrading. The update finished, but then I couldn't boot my Mac anymore. After booting into single user mode (-s), I...
This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
By continuing to use this site, you are consenting to our use of cookies.