Start up from an OS X startup volume when the Mac would otherwise start up from a non-OS X startup volume.Įject (⏏), F12, mouse button, or trackpad buttonĮject removable media, such as an optical disc. Release the keys after you hear the startup sound again. Start up from OS X Recovery over the Internet. These keyboard shortcuts let you interrupt your Mac's normal boot process and can even change the way macOS behaves when you log in. Start up from a NetBoot server using the default boot image. If you want to put your Mac into recovery mode, boot from a USB stick, or start testing your hardware using Apple's diagnostic tools, you'll need to use the right combination of startup keys. Start up from a compatible NetBoot server. You can use Disk Utility and Apple Diagnostics from your Mac to do so. Start up to either Apple Hardware Test or Apple Diagnostics over the Internet. There are a few ways to test a hard drive when you cant get your Mac to boot properly. Whatever your needs, you can boot your Mac in a variety of modes to complete a task before startup all you need to do is press some keys down and wait. A list of languages appears highlight the language you need, then click the blue OK button.
Sometimes you need to boot in Recovery Mode to reinstall an OS or recover your hard drive via the internet. Press and hold Command ( ) D until the Mac restarts and the Diagnostics Loader menu appears in the menu bar.
Start up to either Apple Hardware Test or Apple Diagnostics, depending on which Mac you’re using. Sometimes your Mac isn't running correctly, so you need to reset the NVRAM and PRAM.
#Mac startup keys diagnostics install
Start up from a bootable CD, DVD, or USB thumb drive (such as OS X install media). There must be an option somewhere in Settings or Control Panel, but Ill be dipped if I can find it.
#Mac startup keys diagnostics windows 7
These combinations work with Intel-based Mac computers. Once you boot in diagnostic mode, MSCONFIG will no longer run so how does one turn this option back OFF Bear in mind that Im asking about this for a dual boot system with Windows 7 and 10 so some of the F keys (like e.g. Keep holding until the described behavior occurs. Some Mac features are available by holding down certain keys during startup.Press and hold the keys immediately after you turn on your Mac and hear the startup sound.