If you are seeking a list of boot arguments for use systems that are capable of running Apple’s Operating System, I would say look no further, but this is only what I have used personally over the years, so I may miss some new or have that is depreciated.
sudo nvram boot-arg="ADD BOOT ARGUMENTS HERE"
ketxlog-0xffff
Enables Debugging of Kernel Extensions.maxmem=4096
Limits the amount of RAM that is detected to boot OS X-s
Enables Single User Mode.-v
Enables Verbose Mode.-x
Enables Safe Mode.Don’t forget that sudo nvra -d boot-args will clear the NVRAM (non-volatile random-access memory), which is helpful when it becomes filled with arguments that you no longer need or cause undesired results.
