These key combinations apply only to Mac computers with an Intel processor, not Mac computers with Apple silicon.
To use any of these key combinations, press and hold the keys immediately after pressing the power button to turn on your Mac, or after your Mac begins to restart. Keep holding until the described behavior occurs.
- 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. If your Mac is using a firmware password, you're prompted to enter the password.
- Option (⌥) or Alt: Start up to Startup Manager, which allows you to choose other available startup disks or volumes. If your Mac is using a firmware password, you're prompted to enter the password.
- Option-Command-P-R:Reset NVRAM or PRAM. If your Mac is using a firmware password, it ignores this key combination or starts up from macOS Recovery.
- Shift (⇧): Start up in safe mode. Disabled when using a firmware password.
- D: Start up to the Apple Diagnostics utility. Or use Option-Dto start up to this utility over the Internet. Disabled when using a firmware password.
- N: Start up from a NetBoot server, if your Mac supports network startup volumes. To use the default boot image on the server, hold down Option-N instead. Disabled when using a firmware password.
- Command-S: Start up in single-user mode. Disabled in macOS Mojave or later, or when using a firmware password.
- T: Start up in target disk mode. Disabled when using a firmware password.
- Command-V: Start up in verbose mode. Disabled when using a firmware password.
- Eject (⏏) or F12 or mouse button or trackpad button: Eject removable media, such as an optical disc. Disabled when using a firmware password.
Mac OS Big Sur's version number is 11.0, signaling an end to the 20-plus-year-old OS X versions. This makes sense, as this version of Mac OS will consist of overhauls to almost every part of the. The iPad doesn't get hot like the Mac does. It's basically an emulated environment that the apps run in — separate from the operating system. It's definitely a solution, but it comes.
If a key combination doesn't work
If a key combination doesn't work at startup, one of these solutions might help:
- Press and hold all keys in the combination together, not one at a time.
- Shut down your Mac. Then press the power button to turn on your Mac. Then press and hold the keys as your Mac starts up.
- Wait a few seconds before pressing the keys, to give your Mac more time to recognize the keyboard as it starts up. Some keyboards have a light that flashes briefly at startup, indicating that the keyboard is recognized and ready for use.
- If you're using a wireless keyboard, plug it into your Mac, if possible. Or use your built-in keyboard or a wired keyboard. If you're using a keyboard made for a PC, such as a keyboard with a Windows logo, try a keyboard made for Mac.
- If you're using Boot Camp to start up from Microsoft Windows, set Startup Disk preferences to start up from macOS instead. Then shut down or restart and try again.
Remember that some key combinations are disabled when your Mac is using a firmware password.
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Wherearemyarms Mac Os Catalina
- Keyboard shortcuts that you can use after your Mac has started up.
Whenever you upgrade your operating system (OS), you will need to CAC-enable (i.e. Public Key Enable) the system all over again. You should refer to the instructions and downloads available from the web pages under Getting Started for End Users (Mac) on DISA's Information Assurance Support Environment (IASE) website. You will need middleware to use your CAC on OS X. The instructions on IASE will direct you to Smartcard Services (middleware) downloads from Mac OS forge. Smartcard Services will work for most CACs and readers, however, if you do not see your CAC keychain in the Keychain Access.app after installing the Smartcard Services package and inserting your CAC in the card reader, then I recommend using another free middleware called Centrify Express.
Whenever you upgrade your operating system (OS), you will need to CAC-enable (i.e. Public Key Enable) the system all over again. You should refer to the instructions and downloads available from the web pages under Getting Started for End Users (Mac) on DISA's Information Assurance Support Environment (IASE) website. You will need middleware to use your CAC on OS X. The instructions on IASE will direct you to Smartcard Services (middleware) downloads from Mac OS forge. Smartcard Services will work for most CACs and readers, however, if you do not see your CAC keychain in the Keychain Access.app after installing the Smartcard Services package and inserting your CAC in the card reader, then I recommend using another free middleware called Centrify Express.
Aside from installing middleware, you need to download and import the DoD Root and Intermediate Certificates in your Keychain Access. Most of the DoD certificates are available if you add the 'SystemCACertificates' keychain using the File > Add Keychain option and navigating through the folders to Macintosh HD > System > Library > Keychains. You need to download and import a few certificates into the 'login' keychain, such as DOD ROOT CA 2 (3 certificates total), DOD ROOT CA 3, and any intermediate certificates that issued the certificates on your CAC, which are greater than DOD CA-30 (such as DOD CA-31, DOD EMAIL CA-31, DOD CA-32, DOD EMAIL CA-32, DOD ID CA-33, DOD EMAIL CA-33, DOD ID CA-34, DOD EMAIL CA-34, etc.). Go to the Cross-Certificate Chaining Issue page to download two zip files (i.e.Certificates_PKCS7_v4.1u4_DoD.zip and unclass-irca1_dodroot_ca2.zip, then use the File > Import Certificate option to add the certificates to the 'login' keychain. All DoD Intermediate Certificates are available for download (one-by-one) from the DoD PKI Management website at https://crl.gds.disa.mil/ (download the Certificate Authority Certificate, not the Certificate Revocation List, i.e. CRL) for each certificate.
Mac On Arm
Apple Arm Mac
Company: Southwest I.T. Solutions
Mar 13, 2016 9:22 PM
