Useful when your PIT timer is totally broken. Do APIC timer calibration using the pmtimer. Useful when this option was auto selected, but doesn't work.Īpicpmtimer=1 Either set to 0 or 1. Noapicmaintimer = Don't do time keeping using the APIC timer. This is useful when the PIT/HPET interrupts are unreliable. This can work around problems with incorrect timer initialization on some boards.Īpicmaintimer = Run time keeping from the local APIC timer instead of using the PIT/HPET interrupt for this. No_timer_check = Don't check the IO-APIC timer. Noapictimer = Don't set up the APIC timer Nolapic = Don't use the local APIC (alias for i386 compatibility) Default is 1Ģ: SIGBUS or log uncorrected errors, log corrected errorsģ: never panic or SIGBUS, log all errors (for testing only) Mce= tolerancelevel (number from list below)Ġ: always panic on uncorrected errors, log corrected errorsġ: panic or SIGBUS on uncorrected errors, log corrected errors. Mce=nobootlog = Disable boot machine check logging. On Intel systems it is enabled by default. If your BIOS does not do that it's a good idea to enable this log to make sure you log every machine check event that result in a reboot. Mce=bootlog = Enable logging of machine checks left over from booting.ĭisabled by default on AMD because some BIOS leave bogus logs. Once more info is gathered They will be categorized into the lists above This list needs extensive testing & feedback but most of these flags do work in OSX. This list is mostly AMD specific boot options & for 64bit CPU's.
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