Key Combination |
Effect |
|
On machines with a power key |
power |
Bring up dialog for shutdown, sleep or restart (see next table) |
cmd-ctrl-power |
Unconditionally reboot (sometimes referred to as “control flower power” to easily remember) (dirty reboot - may corrupt disk) |
ctrl-cmd-opt-power |
Fast shutdown |
cmd-power |
Bring up debugger (if debugger installed). Really old macs (mac ii era) needed Paul Mercer’s debugger init to do this, then it got folded into the firmware, around 040 timeframe. |
cmd-opt-power |
Put late model PowerBooks & Desktops to sleep |
cmd-opt-ctrl-power |
(PowerBook 500) Reset Power Manager |
shift-fn-ctrl-power |
(PowerBook G3, G4) Reset Power Manager |
|
On machines without a power key |
ctrl-eject |
Bring up dialog for shutdown, sleep or restart (see next table) |
cmd-ctrl-eject |
Unconditionally reboot |
ctrl-cmd-opt-eject |
Fast shutdown |
cmd-eject |
Bring up debugger (if debugger installed). Really old macs (mac ii era) needed Paul Mercer’s debugger init to do this, then it got folded into the firmware, around 040 timeframe. |
cmd-opt-eject |
Put late model PowerBooks & Desktops to sleep |
|
On all machines |
cmd-opt-esc |
Force quit current app |
cmd-shift-0 |
Put late model PowerBooks & Desktops to sleep No longer work in OS X. On Macs with three floppy drives (Mac SE) they eject the third floppy disk. |
cmd-shift-1 or 2 |
Eject internal or external floppy. Not sure which is which on dual floppy machines (Mac SE, Mac II, etc.) |
cmd-shift-3 |
Screen shot |
cmd-shift-4 |
Abstract user defined area screen shot (hold control while selecting to direct it to the clipboard on Mac OS 9) |
cmd-shift-capslock-4 |
(Classic only) User selectable window screen shot |
cmd-ctl-shift-3 |
Screen shot to clipboard |
cmd-ctl-shift-4 |
Abstract user defined area screen shot to clipboard |
cmd-ctl-shift-capslock-4 |
(Classic only) User selectable window screen shot to clipboard (classic only) |
cmd-tab |
Switch apps (possible to change key in Mac OS 8-9) |
cmd-shift-tab |
Switch apps in reverse order |
cmd-space |
Switch keyboards/script systems (if more than one is installed) |
cmd-opt-space |
switch through all keyboards in keyboards menu |
opt-f3, opt-f4 or opt-f5 |
bring up the system preferences (Mac OS X only - maybe powerbooks only? only if system preferences isn’t already running) |
cmd-f1 |
toggle between video mirroring and extended desktop mode (works on Ti Powerbooks) |
opt-f1 |
open the displays preference (10.2 and later) |
cmd-f2 |
auto-detect a newly-connected display (works on Ti Powerbooks) |
opt-f2 |
open the displays preference (10.2 and later) |
opt-f3, f4, or f5 |
open the Sounds preference (10.2 and later) |
opt-f8, f9, or f10 |
open the Keyboard and Mouse preference (10.2 and later) |
f12 |
Eject CD/DVD (must be held down on 10.1.2 or later). If the device can be dismounted, it is. If not, nothing happens. |
f14 |
dim display (cubes/g4 iMacs/others?) |
f15 |
brighten display (cubes/g4 iMacs/others?) |
cmd-ctl-shift-0 |
Spin down HD (when possible) on machines running OS 9 |
cmd-` |
cycle through current application’s windows (Mac OS X 10.2 only?) |
cmd-~ |
cycle through current application’s windows (reverse order) (Mac OS X 10.2 only?) |
opt-"Empty Trash" |
Emptry trash without locked file or contents summary alert. Empties locked items, as well |
cmd-opt-D |
(Mac OS X only) toggle dock |
cmd-opt (when opening chooser) |
(Mac OS 9 only) rebuild chooser cache of printer driver information |
|
(See Universal Access System Preference for more on following) |
cmd-opt-ctl-8 |
(Mac OS X, 10.2 or later) Turn on "Inverse Mode" via accessbility. |
cmd-opt-8 |
(Mac OS X, 10.2 or later) Turn on "Zoom Mode" via accessbility. |
cmd-opt-plus |
(Mac OS X, 10.2 or later) Zoom In via accessbility. |
cmd-opt-minus |
(Mac OS X, 10.2 or later) Zoom Out via accessbility. |