When a Mac boots up, and you get the "No Smoking" (circle with a slash
through it), what exactly does that mean?
A client of mine has been seeing occasional booting failures if their
software is installed. It is a boot time kext with OSBundleRequired
set to Root. Is it possible for a kext to cause this kind of boot
failure? I figured that error was coming from EFI before the kernel
even started to boot.
Also, any suggestions on how to debug the issue? If I enable verbose
boot, it all boots fine.
FWIW, this problem seems to be hardware specific, meaning they have a
bunch of machines (allegedly these are the same hardware and OS). The
problem always seems to manifest itself on the same machines, i.e.
there are some machines that never exhibit the problem.
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