How to use the Mac’s mysterious startup keyboard combos

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startup keyboard combos
Holding down the right key when you start up your Mac can fix all kinds of problems.
Photo: Charlie Sorrel/Cult of Mac

If your Mac is sick, the first step is to restart it. But did you know that there are several tricks you can perform while your Mac is starting up?

Many of these are advanced Mac diagnostic tools, which shouldn’t be used unless you really know what you’re doing. But some not-so-secret startup keyboard combos will remove a stuck disk (if your Mac is old enough to even have a disk inside), let you boot your Mac from a USB drive, or to turn your entire computer into one big storage disk to connect to another computer.

IconToggles Tweak Brings 16 Different Actions To Your Home Screen [Jailbreak]

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The quickest way to toggle settings on your iPhone.
The quickest way to toggle settings on your iPhone.

It’s not difficult to open up the Settings app and activate or deactivate things like Wi-Fi, Bluetooth, or Airplane Mode. But it could be a whole lot quicker. Wouldn’t it be nice if you could have an icon on your home screen that allows you to toggle these things instantly — without having to navigate the Settings app? Thanks to IconToggles, you can.