195 Results for

nvram

Article

Q&A: MacFixIt Answers

Readers ask about the power usage of memory upgrades, and more.

By June 28, 2013

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What to do when a Mac won't boot to Safe Mode

If your system hangs when going into Safe Mode, or will not load into Safe Mode at all, there are a couple of things you can do to fix the situation.

By March 11, 2013

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How to manage OS X boot options with wireless keyboards

If you have a Bluetooth keyboard, OS X may ignore keystrokes at startup for booting into Safe mode and other optional boot environments.

By February 21, 2013

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Tackle clamshell mode issues with Apple laptops

A quick PRAM reset or settings change may help a stubborn MacBook that refuses to enter clamshell mode.

By January 24, 2013

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Check a used Mac's condition before purchasing

If you are considering purchasing a used Mac, here are some ways to find out if its hardware is running properly.

By November 26, 2012

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Use the Calculator to reveal a Mac's firmware password

In Mac systems prior to 2011, you can uncover the Mac's firmware password using the Calculator's ability to manipulate binary numbers.

By September 27, 2012

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What to do when a Mac always boots to verbose or single-user modes

Apple supplies various alternate boot modes for OS X, but sometimes systems get stuck in them.

By August 22, 2012

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Tackling Macs that always boot to Safe Mode

Safe Mode in OS X is a great troubleshooting option, but on rare occasions, a system might always boot to Safe Mode.

By March 8, 2012

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Boot argument options in OS X

The OS X boot arguments are useful for troubleshooting problems with system startup and how the system behaves when running.

By February 7, 2012

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Gray progress bar showing at start-up

If you always see a gray progress bar at start-up when booting OS X, there are a few things you can do to correct the situation.

By May 24, 2011