- Startup key combination is very important to boot the system while reimaging and repairing the current os but a lot of MAC users not aware of the startup keys. Below mentioned key combination will work as per the description. Keep holding while startup. To use any of these key combinations, press and hold the keys immediately after pressing the.
- Startup Key Combinations. Startup key combinations are invoked immediately following the startup chime, and before the grey Apple logo appears in the middle of the screen, when you power-on your Mac. The object of these key combinations is to perform different functions, many of which are useful in the maintenance of Macs.
Mac Os Boot Command Keys
Startup Manager/Boot From USB: Option. Apple's startup manager prevents your Mac from booting. What are all the Startup key combinations for Power Mac? These combinations work with Intel-based Mac computers.That is not the answer we want, we are asking about Power Macs (PowerPC Based Macintosh.). This question was asked before in the v10.7 Lion (Intel) community, and hopefully we may have better luck posting here in the Power Mac community. Shift: Starts your Mac in safe mode. This helps you troubleshoot because it only loads the minimum.
Referenced from: https://support.apple.com/en-us/HT201255
Mac Boot Into Recovery Mode
To use any of these key combinations, press and hold the keys immediately after pressing the power button to turn on your Mac, or after your Mac begins to restart. Keep holding until the described behavior occurs.
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Startup Key Combinations For Mac
- Command (⌘)-R: Start up from the built-in macOS Recovery system. Or use Option-Command-R or Shift-Option-Command-R to start up from macOS Recovery over the Internet. macOS Recovery installs different versions of macOS, depending on the key combination you use while starting up. If your Mac is using a firmware password, you're prompted to enter the password.
- Option (⌥) or Alt: Start up to Startup Manager, which allows you to choose other available startup disks or volumes. If your Mac is using a firmware password, you're prompted to enter the password.
- Option-Command-P-R:Reset NVRAM or PRAM. If your Mac is using a firmware password, it ignores this key combination or starts up from macOS Recovery.
- Shift (⇧): Start up in safe mode. Disabled when using a firmware password.
- D: Start up to the Apple Diagnostics utility. Or use Option-Dto start up to this utility over the Internet. Disabled when using a firmware password.
- N: Start up from a NetBoot server, if your Mac supports network startup volumes. To use the default boot image on the server, hold down Option-N instead. Disabled when using a firmware password.
- Command-S: Start up in single-user mode. Disabled in macOS Mojave or later, or when using a firmware password.
- T: Start up in target disk mode. Disabled when using a firmware password.
- Command-V: Start up in verbose mode. Disabled when using a firmware password.
- Eject (⏏) or F12 or mouse button or trackpad button: Eject removable media, such as an optical disc. Disabled when using a firmware password.