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Make an Intel Mac Boot Directly to Startup Manager

Feb 26, 2021 - 14 Comments
Terminal in macOS

If you have an Intel Mac, you can make it boot directly into the boot disk options startup manager by issuing an nvram terminal command. This could be helpful for advanced users in particular whether they’re troubleshooting, have dual boot situations with multiple versions of macOS, macOS and Windows 10 in Boot Camp, macOS and … Read More

How to Run 64-Bit Only Mode Mac OS

Apr 4, 2018 - 9 Comments
How to run MacOS in 64-bit only mode

Advanced Mac users, administrators, and developers who wish to test Mac OS in 64-bit mode can do so with the help of a terminal command. Essentially this will only allow 64-bit applications and processes to run on the Mac, which can be helpful for discovering what (if any) apps, tasks, components, processes, and items may … Read More

Make a SuperDrive Work on Unsupported Macs? It’s Possible!

Mar 17, 2018 - 50 Comments
SuperDrive on a Mac

The Apple SuperDrive is an external CD / DVD drive that reads and writes to optical discs, and while it works great with many Macs, there are some Mac models where the SuperDrive doesn’t work, like any Mac that happened to come with a built-in optical drive. For the computers that do not support the … Read More

Where’s the Startup Boot Sound on New iMac & MacBook Pro?

Jul 14, 2017 - 82 Comments

The Mac startup boot chime has been around for decades, and is one of the most notable features defining a booting Mac. Nonetheless, the latest MacBook Pro and iMac models (from late 2016 onward) are quiet and perform no startup boot sound, meaning the Mac boots up completely silently instead of making the traditional chime … Read More

How to Disable Boot on Lid Open on MacBook Pro (2016 & Later Models)

Jan 19, 2017 - 32 Comments
New MacBook Pro boots automatically when lid is opened

The newest MacBook Pro models default to automatically powering on when the laptops lid is opened, or when the Mac is connected to power. This may be desirable to some users, but not everyone may be pleased with an automatically booting MacBook just when the display lid is lifted open. With a visit to the … Read More

How to View & Clear the Mac NVRAM Contents from Terminal in Mac OS X

Dec 16, 2015 - 4 Comments
Terminal in macOS

Advanced Mac users may find it necessary to view or directly manipulate firmware variables found within NVRAM on the computer. Typically the NVRAM contains specific system data about things like the system audio level, startup disk details, an active user name, screen backlighting and resolution, and other technical details. While most users have no business … Read More

How to Enable Safe Mode from Command Line on Mac

Sep 4, 2014 - 4 Comments
Terminal in macOS

Troubleshooting complex issues on a Mac can be challenging as is, and if you’re ever confronted with some complex situations you may find the command line to lend a major hand. In this case, advanced users can boot a Mac into safe mode through the usage of the nvram utility, a tool which allows users … Read More

How to Disable the Mac Boot Chime Completely

Nov 4, 2012 - 71 Comments
Disable the Mac boot chime

If you’re a Mac owner you know that every time the Mac reboots or starts up it makes a startup chime sound. Though you can temporarily mute the chime by holding down the Mute key on any Mac keyboard, you can also choose to disable it completely by turning to the command line. To be … Read More

How to Reset PRAM on a Mac

Nov 15, 2010 - 51 Comments
Finder icon on the Mac

Resetting your PRAM (or NVRAM) is a common troubleshooting technique when a Mac is misbehaving. We’ll cover how to reset PRAM on any Mac, as well as providing some additional information about PRAM and what it is to better help you understand when and why you’d want to reset it.

How to Always Boot Mac OS X in Verbose Mode

Mar 25, 2007 - 30 Comments
Terminal in macOS

Booting Mac OS X as usual shows the Apple logo and eventually you’ll wind up at a login screen or desktop, that’s attractive and all, but some users would prefer to see what’s going on behind the scenes. That’s what Verbose Boot Mode does, it shows you what is really happening during system startup on … Read More

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