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  2. Restart the computer and close programs on Mac - AOL Help

    help.aol.com/articles/restart-the-computer-and...

    1. Click the Apple menu, and then click Shut Down.. Note: Wait for 20 seconds, and then turn on the computer. 2. On the keyboard, hold down the Command and Option keys, and then tap the esc key.

  3. Power-on self-test - Wikipedia

    en.wikipedia.org/wiki/Power-on_self-test

    The first memory location the CPU tries to execute is known as the reset vector. In the case of a hard reboot, the northbridge will direct a code fetch request to the BIOS located on the system flash memory. For a warm boot, the BIOS will be located in the proper place in RAM and the northbridge will direct the reset vector call to the RAM. In ...

  4. Apple certification programs - Wikipedia

    en.wikipedia.org/wiki/Apple_certification_programs

    These certifications are designed for IT professionals who support Mac OS X or who perform Mac OS X desktop support and troubleshooting, such as help desk staff, system administrators, service technicians, and service desk personnel. Each certification is specific to the version of OS X it relates to; an administrator who was qualified as ACTC ...

  5. OS X El Capitan - Wikipedia

    en.wikipedia.org/wiki/OS_X_El_Capitan

    Mac Mini (Early 2009 or later) Mac Pro (Early 2008 or later) Xserve (Early 2009) Of these computers, the following models were equipped with 1 GB RAM as the standard option on the base model when they were shipped originally. They can only run OS X El Capitan if they have at least 2 GB of RAM. iMac (Mid 2007 - Early 2008) Mac Mini (Early 2009)

  6. FileVault - Wikipedia

    en.wikipedia.org/wiki/FileVault

    Mac OS X 10.5 Leopard and Mac OS X 10.6 Snow Leopard use more modern sparse bundle disk images [2] which spread the data over 8 MB files (called bands) within a bundle. Apple refers to this original iteration of FileVault as "legacy FileVault". [3] OS X 10.7 Lion and newer versions offer FileVault 2, [3] which is a significant redesign. This ...

  7. Function key - Wikipedia

    en.wikipedia.org/wiki/Function_key

    Mac: The classic Mac OS supported system extensions known generally as FKEYS which could be installed in the System file and could be accessed with a Command-Shift-(number) keystroke combination (Command-Shift-3 was the screen capture function included with the system, and was installed as an FKEY); however, early Macintosh keyboards did not support numbered function keys in the normal sense.

  8. iOS 9 - Wikipedia

    en.wikipedia.org/wiki/IOS_9

    Night Shift is a display mode introduced in iOS 9.3. The mode shifts the colors of the device's display to be warmer, similar to F.lux, a popular program for Microsoft Windows and Apple macOS computers. [30] [31] When enabled, it uses the device's clock and geographic location to determine when to turn the feature on or off. Optionally, the ...

  9. Plug-in (computing) - Wikipedia

    en.wikipedia.org/wiki/Plug-in_(computing)

    Example Plug-In Framework. The host application provides services which the plug-in can use, including a way for plug-ins to register themselves with the host application and a protocol for the exchange of data with plug-ins. Plug-ins depend on the services provided by the host application and do not usually work by themselves.