Hold during startup | Description |
---|---|
Shift (⇧) | Start up in safe mode. |
Option (⌥) | Start up to Startup Manager, which allows you to choose other startup disks, if available. If your Mac is using a firmware password, you’re asked to enter the password first. |
D | Start up from the built-in Apple Hardware Test or Apple Diagnosticsutility, depending on your Mac model. Or use Option-D to start up from this utility over the Internet. |
N | Start up from a compatible NetBoot server, if available. To use the default boot image on the NetBoot server, hold down Option-N instead. iMac Pro doesn’t support this startup key. |
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. |
Option-Command (⌘)-P-R | Reset NVRAM (or PRAM). If your Mac is using a firmware password, this combination causes your Mac to start up from macOS Recovery instead. Turn off the firmware password from macOS Recovery, then restart and reset NVRAM. |
Command-S | Start up in single-user mode. |
T | Start up in target disk mode. |
Command-V | Start up in verbose mode. |
Eject (⏏), F12, mouse button, or trackpad button | Eject removable media, such as an optical |