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# Macintosh startup sound

![https://github.com/seanpm2001/WacOS/blob/master/Graphics/Splash-Screen/Mac-OS-8/Mac_os_8_splash_screen.png](https://github.com/seanpm2001/WacOS/blob/master/Graphics/Splash-Screen/Mac-OS-8/Mac_os_8_splash_screen.png)

The Macintosh startup chime is played on power-up, before trying to boot an operating system. The sound indicates that diagnostic tests run immediately at startup have found no hardware or fundamental software problems. The specific sound differs depending on the ROM, which greatly varies depending on Macintosh model. The first sound version in the first three Macintosh models is a simple square-wave "beep", and all subsequent sounds are various chords.

Mark Lentczner created the software that plays the arpeggiated chord in the Macintosh II. Variations of this sound were deployed until Jim Reekes created the startup chime in the Quadra 700 through the Quadra 800. Reekes said, "The startup sound was done in my home studio on a Korg Wavestation EX. 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 created the sound as he was annoyed with the tri-tone startup chimes because they were too associated with the death chimes and the computer crashes. He recalls that Apple did not give him permission to change the sound but that he secretly snuck the sound into the computers with the help of engineers who were in charge of the ROM chips. When Apple discovered this, he refused to change it, using various claims in order to keep the new sound intact. He is also the creator of the iconic (or "earconic", as he calls it) "bong" startup chime in most Macintoshes since the Quadra 840AV. A slightly lower-pitched version of this chime is in 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 have the "bong" chime like the one in the PCI-based Power Macs) use a unique chime, which is also in the television commercials for the Power Macintosh and PowerBook series from 1995 until 1998, and the 20th Anniversary Macintosh uses another unique sound.

For models built prior to the introduction of the Power Macintosh in 1994, the failure of initial self-diagnostic tests results in a Sad Mac icon, an error code, and distinctive Chimes of Death sounds.

The chime for all Mac computers from 1998 to 2016 is the same chime used first in the iMac G3. The chord is a F-sharp major chord, and was produced by pitch-shifting the 840AV's sound. The Mac startup chime is now a registered trademark in the United States, and is featured in the 2008 Pixar film WALL-E when the titular robot character is fully recharged by solar panels as well as in the 2007 Brad Paisley song "Online".

Starting with the 2016 MacBook Pro, all new Macs were shipped without a startup chime, with the Macs silently booting when powered on. In 2020, the startup chime would be added to these models with the release of macOS Big Sur, which allows it to be enabled or disabled in System Preferences. On the macOS Big Sur 11.0.1 beta, it was discovered that the new lower pitched chime was brought to all older supported Macs. In a firmware update included in the macOS Catalina 2020-001 Security Update, and the macOS Mojave 2020-007 Security Update, the new startup chime in Big Sur is brought to all Big Sur-supported Macs including the unsupported 2013 iMac.

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## TODO

Needed improvements:

* Sound samples

* Full history of startup sound

* More images of startup

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## Sources

[Wikipedia - Macintosh startup](https://en.wikipedia.org/wiki/Macintosh_startup#Startup_chime)

Other sources are needed, and this article needs LOTS of improvement and original work to prevent it from being half a copy and paste from Wikipedia.

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## Article info

**Written on:** `2021 Tuesday September 28th at 4:05 pm`

**Last revised on:** `2021 Tuesday September 28th at 4:05 pm`

**File format** `Markdown document (*.md *.mkd *.markdown)`

**Line count (including blank lines and compiler line):** `61`

**Article version:** `1 (2021 Tuesday September 28th at 4:05 pm)`

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