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2answers
3k views

Mac Pro can't safe boot

I've been trying to solve the issue seen here: http://www.princeton.edu/~jcjb/docs/osx_error_fix/ The recommended solution is to do a safe boot which clears various caches etc, however I'm unable ...
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0answers
18 views

Does system integrity protection prevent nvram(8) from setting -x as a boot argument for safe mode?

When pre-release macOS Sierra is in safe mode with -x as a boot argument in NVRAM, the following command works as expected: sudo nvram boot-args="-v" When Sierra is booted in normal mode, the ...
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0answers
141 views

Gray screen of death when booting

I know this has been brought up many times before here, and I know there has been many answers and suggestions to this problem, but so far nothing seems to be helping me in my situation, so I thought ...
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0answers
254 views

Macbook pro crashed after loss of power. Fixed a few problems, but still cannot boot

We have a 2010 Macbook Pro, and a few days ago he had it off the power connection, and it lost battery power. It shut down, and when we hooked the cable back up, it would show the apple logo, and have ...
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0answers
24 views

Can't boot after graphic error

Specs: MBP 15-in late 2011 running Yosemite 10.10.3 Background I have an external monitor that I've been using for about a year, but recently the Thunderbolt-to-HDMI adapter I have has been giving ...