How to manage OS X boot options with wireless keyboards. Have just bought a new aluminium wired keyboard for my 17" iMac Core 2, running Leopard. Next select Controller or iBridge in the sidebar. Seems the Option key does not work during the boot process. One problem though, I cannot boot into windows. … MacOS boot volume not in windows partition. Wait 10 seconds. erased hard drive and installed Sierra. This is a real sweet keyboard and I love it. Wait for the chimes and let go. was running Mojave. I just installed Windows with boot camp. It works when I use my old wired Apple keyboard. When your Mac powers up, it normally uses the system on its internal hard drive unless you change this behavior by choosing System Preferences@@→Startup Disk. Another thing worth keeping in mind is ensuring that the keyboard is not faulty. key board works fine on iMac. The problem arises when I load into windows 10 and it can't boot back into the Mac portion because windows can't load the Mac OS boot volume. Mac Pro mid 2012 quad core intel xeon. Ensure That The Keyboard is Not Faulty. Now, I can't even restart to change boot camp. I have to actually shut down. Holding down the Option key during startup will show you a boot screen with all bootable devices listed. I have a Razer Deathstalker as my regular keyboard, but OSX stopped recognizing the option key at startup, so I had to plug in the default mac keyboard as well for just the option key. Option key not working for switching in bootcamp. reset SMC. ... (On some Mac keyboards the Option key will be named Alt). If done correctly, and assuming a firmware password is not set, you should see your internal hard drive show up on the display. Power on your Mac while holding the option key on your keyboard. Print these boot option keys, because they’re particularly helpful to have […] Option key not working at boot up. I just installed BootCamp on my 2013 Mac Pro and the option key doesn't seem to work when booting up. I'm using a Logitech MX Keys w/ wireless USB receiver. If you have a Bluetooth keyboard, OS X may ignore keystrokes at startup for booting into Safe mode and other optional boot environments. You can also change what your Mac does by holding down the following keys or key combinations during startup. reboot and tap caps lock, cap light did not come on until late in boot up. I am still having this same issue. Shut down your Mac and hold down Command-Option-P-R during boot. If you DO have a firmware password set then you will be prompted to enter the password before moving on. reset Pram. You can use the mouse or the keyboard to select a device to boot into. Now, press and hold the Option key and select System Information. 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