Mac os x 10.0 10.11 timeline mac os#

The first Macs to display color or grayscale Happy Mac icons during startup were the PowerBook Duo 2300c and PowerBook 5300 series, released in August 1995. In early Open Firmware Macs ( OF version 1.0.5 to 2.0), which were still considered 'Old World', the monochrome icon and Toolbox were stored within an OF device within the ROMs. A monochrome floppy icon with question mark is also stored in there for when the system file cannot be found. On most Old World ROM Macs, the Happy Mac image is a monochrome icon stored in the Macintosh Toolbox ROM. The icon was part of a set designed by Susan Kare of the original Macintosh development team for the launch of the first Macintosh 128K in 1984. After the system has completed loading, the Finder will normally be launched by default and the desktop will appear. In classic Mac OS, icons of loaded extensions and control panels may be displayed at the bottom.

Mac os x 10.0 10.11 timeline mac os#

Once a bootable system file is found, a Happy Mac icon will appear, followed by the welcome or startup screen of the version of Mac OS that is being loaded. If diagnostics do not fail, but the computer cannot immediately locate a bootable system file (whether from an internal hard drive or floppy disk), a blinking floppy (or folder) icon with a question mark will be displayed until such a disk is inserted or mounted. If the diagnostics fail, a Sad Mac icon will appear, indicating a problem in the boot sequence. After the ROM is loaded and diagnostics are completed, the screen will turn gray as the computer looks for a bootable operating system. The lack of a beep or chime would indicate an electrical or mechanical problem. When a Macintosh computer is turned on, it should make a startup beep or chime as the ROM is loaded.

Mac os x 10.0-10.11 timeline