What does the no symbol on a Mac mean?

What does the no symbol on a Mac mean?

prohibitory symbol
A prohibitory symbol, which looks like a circle with a line or slash through it, means that your startup disk contains a Mac operating system, but it’s not a version or build of macOS that your Mac can use. If Disk Utility found no errors or repaired all errors, reinstall macOS.

How do I boot my MacBook Pro into recovery mode?

Reboot your Mac. Hold down Option/Alt-Command-R or Shift-Option/Alt-Command-R to force your Mac to boot into macOS Recovery Mode over the internet. This should boot the Mac into Recovery Mode.

What does a prohibitory symbol on a MacBook Pro mean?

A prohibitory symbol, which looks like a circle with a line or slash through it, means that your startup disk contains a Mac operating system, but it’s not a version or build of macOS that your Mac can use. Press and hold the power button on your Mac for up to 10 seconds, until your Mac turns off.

What does the lock icon on my MacBook Pro mean?

Lock icon. If your Mac is using a firmware password, the lock icon appears when you try to start up from another disk or volume, such as an external drive or macOS Recovery. Enter the firmware password to continue.

What does it mean when a Mac starts up to a blank screen?

Learn what to do if your Mac starts up to a blank screen, such as an empty gray, black, or blue screen. Learn what to do if your Mac starts up to an Apple logo or progress bar. A globe with an exclamation point means that your Mac tried to start up from macOS Recovery over the Internet, but couldn’t.

Why do I get a spinning globe on my MacBook Pro?

Spinning globe. If you see a spinning globe instead of an Apple logo, it means your Mac is starting from a network-based startup disk like Netboot or Internet Recovery instead of a connected or built-in startup disk. If you didn’t mean for your Mac to start this way, press and hold the power key to turn off your Mac.