The first sound version in the first three Macintosh models is a simple square-wave 'beep', and all subsequent sounds are various chords. The specific sound differs depending on the ROM, which greatly varies depending on Macintosh model. The sound indicates that diagnostic tests run immediately at startup have found no hardware or fundamental software problems. The Macintosh startup chime is played on power-up, before trying to boot an operating system. Startup chime The startup chime heard on all Macintosh models made from 1998 to 2016. On Macs running macOS Big Sur or later the startup sound is enabled by default, but can be disabled by the user within System Preferences ( Big Sur or Monterey) or System Settings ( Ventura).
The classic Macintosh startup sequence includes hardware tests which may trigger the startup chime, Happy Mac, Sad Mac, and Chimes of Death. JSTOR ( November 2011) ( Learn how and when to remove this template message).Unsourced material may be challenged and removed.įind sources: 'Macintosh startup' – news
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