Happy Mac

The Macintosh startup sequence behaviors include the startup chime, Happy Mac, Sad Mac and Chimes of Death.

The Macintosh startup chime is a single note or chord simply known as "the startup sound". The sound used differs depending on the ROM, which greatly varies depending on model type. This short sound is played when an Apple Macintosh computer is turned on. The sound indicates that diagnostic tests run immediately at startup have found no hardware or fundamental software problems.

Mark Lentczner created the code for the arpeggiated chord used on the Macintosh II. Variations of this sound were used until Jim Reekes created the startup chime used for the Quadra 700 through the Quadra 800. Reekes said, "The startup sound was done in my home studio on a Korg Wavestation. It's a C major chord, played with both hands stretched out as wide as possible (with 3rd at the top, if I recall)." He was also the creator of the iconic (or "earconic", as he calls it) "bong" startup chime used in most Macintoshes since the Quadra 840AV. A slightly lower-pitched version of this chime was used on all PCI-based Power Macs until the iMac G3. The Macintosh LC, LC II, and Macintosh Classic II do not use the Reekes chime, instead using an F major chord that just produces a "ding" sound. The first generation of Power Macintosh computers also do not use the Reekes chime, instead using a chord strummed on a Yamaha 12-string acoustic guitar by jazz guitarist Stanley Jordan. Further, the Power Macintosh 5200–6300 computers (excluding the 5400 and 5500, which still had the "bong" chime) used an exclusive chime not used on any other Macintosh model, and the 20th Anniversary Macintosh also used a special startup chime as well, exclusive to this particular Macintosh.

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