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  2. Macintosh startup - Wikipedia

    en.wikipedia.org/wiki/Macintosh_startup

    The Mac OS X startup screen from versions 10.2 to 10.9, ... if the user presses the command and power keys before the boot screen is displayed, only the Chimes of ...

  3. launchd - Wikipedia

    en.wikipedia.org/wiki/Launchd

    launchd has two main tasks. The first is to boot the system, and the second is to load and maintain services.. Here is a simplified view of the Mac OS X Tiger system startup on a PowerPC Mac (on an Intel Mac, EFI replaces Open Firmware and boot.efi replaces BootX):

  4. Option key - Wikipedia

    en.wikipedia.org/wiki/Option_key

    Startup Disk – Holding the Option Key at boot time activates a boot manager built into the firmware, where the user may choose from which drive/partition to boot the computer from, including Mac OS and Mac OS X partitions or drives on PowerPC-based Macs, and Mac OS X and Microsoft Windows partitions or drives on Intel-based Macs (running Mac ...

  5. Macintosh Classic - Wikipedia

    en.wikipedia.org/wiki/Macintosh_Classic

    The Mac Classic can be booted into System 6.0.3 by holding down the ⌘ Command+⌥ Option+X+O keys during boot. [ 20 ] Some dealers included a software bundle called Smartbundle with the Classic. [ 21 ]

  6. Target Disk Mode - Wikipedia

    en.wikipedia.org/wiki/Target_Disk_Mode

    On Classic Mac OS, this means FireWire 2.3.3 or later and Mac OS 8.6 or later are required to use a FireWire target. [1] The host computer may run Microsoft Windows, but with some possible shortcomings: to read a Mac's HFS-formatted partitions, extra drivers such as MacDrive, TransMac, MacDisk, or HFSExplorer are necessary. Users also must ...

  7. Old World ROM - Wikipedia

    en.wikipedia.org/wiki/Old_World_ROM

    Once Toolbox is running, PPC machines can boot into Mac OS directly. On all Old World ROM machines, once Toolbox is loaded, the boot procedure is the same. Toolbox executes a memory test, enumerates Mac OS devices it knows about (this varies from model to model), and either starts the on-board video (if present) or the option ROM on a NuBus or ...

  8. macOS - Wikipedia

    en.wikipedia.org/wiki/MacOS

    The first version of Mac OS X, Mac OS X Server 1.0, was a transitional product, featuring an interface resembling the classic Mac OS, though it was not compatible with software designed for the older system. Consumer releases of Mac OS X included more backward compatibility.

  9. Apple–Intel architecture - Wikipedia

    en.wikipedia.org/wiki/Apple–Intel_architecture

    Booting to non-Mac operating systems is possible by holding the option key while booting to select an operating system other than macOS to which the user would like to boot. [ 4 ] [ 5 ] On April 5, 2006, Apple made available for download a public beta version of Boot Camp , a collection of technologies that allows users of Intel-based Macs to ...