195 Results for

nvram

Article

Leopard Graphics Update 1.0 (#3): Zap NVRAM/PRAM for numerous issues; freezes

More fixes for this surprisingly problematic update.

By Feb. 19, 2008

Article

Thawing some deep freezes: Zapping PRAM/NVRAM

Zapping PRAM/NVRAM has only a few uses and this is one of them.

By Jul. 17, 2007

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Margin Note: Why are three chimes recommended for a PRAM/NVRAM reset?

Margin Note: Why are three chimes recommended for a PRAM/NVRAM reset?

By Jul. 18, 2006

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Troubleshooting Mac OS X 10.2.4: Resetting NVRAM for sleep problems

Troubleshooting Mac OS X 10.2.4: Resetting NVRAM for sleep problems

By Mar. 5, 2003

Article

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 Feb. 7, 2012

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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 Feb. 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 Jan. 24, 2013

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How to boot to Safe Mode in OS X

Often when troubleshooting problems in OS X, booting to Safe Mode is one step to minimize the boot environment. Here are some options for how to do this.

By Apr. 13, 2011

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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 Aug. 22, 2012

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Q&A: MacFixIt Answers

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

By Jun. 28, 2013