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Osx Fedora Dual Boot Mbp 2017 Mac From Properly

You may get a sad Mac face, an audible beep, or another ailment keeping your Mac from properly booting.

When this happens, you can troubleshoot your Mac by using boot options to run an Apple Hardware Test, or booting with extensions disabled.

Sometimes, launching your Mac this way can help save you a trip to the Apple Store.

Instead, turn to this guide in which we explain all of the various boot options in OS X that may help return your Mac to normal.

Osx Fedora Dual Boot Mbp 2017 Mac OS X Or

Press C During Startup Booting from a CD You can hold down the C key on your keyboard to instantly boot to a Mac OS X or other bootable disc in your Mac.

Press D During Startup Apples Hardware Test utility is usually run by booting from a disc that came with your computer.

With the introduction of Intel-based Macs, however, Apple has built the AHT utility right into your Mac.

Simply hold down the D key while starting up your Mac to boot into the Apple Hardware Test.

Press Option Command P R Sometimes on a Mac, the PRAM (parameter RAM) and NVRAM (non-volatile RAM) can become corrupt and cause various problems.

These two memory areas store settings and information that is not cleared whenever you turn off your Macs power.

To do this, youll want to turn off your Mac, and then turn it back on while holding down the Command Option P R keys.

Hold the keys down until the computer restarts and you hear the startup sound for the second time.

The PRAM will be reset.

Press Option During Startup Holding down the Option key during startup will show you a boot screen with all bootable devices listed.

You can use the mouse or the keyboard to select a device to boot into.

This is great for those times when your main installation of OS X isnt working correctly and you need to boot into a bootable mirror of your OS X install.

Press Eject, F12, or Hold Down MouseTrackpad Button Sometimes discs can get stuck in your optical drive.

When you cannot seem to get them out, you may panic, but just try restarting while holding down either the Eject key, F12 key, or your mouse or trackpad button.

Your disc will be ejected in a flash after doing this.

Press N During Startup If your setup includes a compatible network server (NetBoot), you can hold down the N key during startup to attempt a network boot.

You can optionally use the Option N keys during startup to start from a NetBoot server using the default boot image provided.

Press T During Startup Target Disk Mode is a great way to retrieve your files from your Mac if your machine refuses to boot properly.

Sometimes its best to just retrieve those files and start fresh with a clean copy of OS X.

Press Shift During Startup OS X includes a boot option called Safe Mode.

Start up your machine while holding down the Shift key to have OS X only load required kernel extensions and login items.

It will disable all non system fonts, all startup items, and login items.

This Safe Mode feature is a great way to troubleshoot OS X applications and extensions that arent working properly.

Check out this article for more information about booting into Safe Mode.

Press Command V During Startup Command V boots your Mac into what is called Verbose Mode.

Using this key combination will cause your Mac to become very verbose on startup and will show a terminal-like interface while booting.

It will contain information important to startup, allowing you to diagnose startup problems by seeing any errors that may be occurring during startup.

Verbose mode exits automatically when the computers startup process progresses sufficiently and the blue screen appears.

Press Command S During Startup Holding down Command S during startup will boot your Mac into Single User Mode.

This is a terminal interface that allows you to login and interact with your computer via text input only.

This mode is good for when you need to troubleshoot a startup issue, or modify a file or application that is preventing proper startup.

Press Command R During Startup If your system contains Mac OS X Lion, then youre in luck because it has all of the necessary restore features built right in.