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2. Macintosh startup - Wikipedia

   en.wikipedia.org/wiki/Macintosh_startup

   A Happy Mac is the normal bootup (startup) icon of an Apple Macintosh computer running older versions of the Mac operating system. It was designed by Susan Kare in the 1980s, drawing inspiration from the design of the Compact Macintosh series and from the Batman character Two-Face . [ 10 ]

3. Old World ROM - Wikipedia

   en.wikipedia.org/wiki/Old_World_ROM

   Toolbox then checks for a disk in the floppy drive, and scans all SCSI buses for a disk with a valid System Folder, giving preference to whatever disk is set as the startup disk in the parameter RAM. If a bootable disk is found, the Happy Mac logo is displayed, and control is handed over to the Mac OS.

4. Boot Camp (software) - Wikipedia

   en.wikipedia.org/wiki/Boot_Camp_(software)

   8 GB USB storage device, or external drive formatted as MS-DOS for installation of Windows drivers for Mac hardware; 20 GB free hard disk space for a first-time installation or 40 GB for an upgrade from a previous version of Windows; A full version of one of the following operating systems:

5. Macintosh 128K - Wikipedia

   en.wikipedia.org/wiki/Macintosh_128K

   The Macintosh contained a single 400 KB, single-sided 3 + 1 ⁄ 2-inch floppy disk drive, with no option to add any further internal storage, like a hard drive or additional floppy disk drive. The system software (Mac OS) was disk-based from the beginning, as RAM had to be conserved, but this "Startup Disk" could still be temporarily ejected.

6. Boot disk - Wikipedia

   en.wikipedia.org/wiki/Boot_disk

   A boot disk is a removable digital data storage medium from which a computer can load and run an operating system or utility program. [1] The computer must have a built-in program which will load and execute a program from a boot disk meeting certain standards.

7. Macintosh Toolbox - Wikipedia

   en.wikipedia.org/wiki/Macintosh_Toolbox

   Although the "Classic Mac OS" boot process is convoluted and largely undocumented, it is not more limited than an IBM PC compatible BIOS. Like a PC's master boot record, a ROM-based Mac reads and executes code from the first blocks ("boot blocks") of the disk partition selected as the boot device. The boot blocks then verify that a suitable ...

8. Target Disk Mode - Wikipedia

   en.wikipedia.org/wiki/Target_Disk_Mode

   Target Disk Mode (sometimes referred to as TDM or Target Mode) is a boot mode unique to Macintosh computers. When a Mac that supports Target Disk Mode [1] is started with the 'T' key held down, its operating system does not boot. Instead, the Mac's firmware enables its drives to behave as a SCSI, FireWire, Thunderbolt, or USB-C external mass ...

9. Hard Disk 20 - Wikipedia

   en.wikipedia.org/wiki/Hard_Disk_20

   In fact, even for the Macintosh 512K to use the drive, it requires an additional file in the System Folder on a special startup disk which adds additional code into memory during startup. A startup routine also allows the Mac to check for the presence of a System file on the Hard Disk, switch over to it and eject the startup disk.