The classic Macintosh startup sequence includes hardware tests which may trigger the startup chime, Happy Mac, Sad Mac, and Chimes of Death. 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
Big Sur () is a rugged and mountainous section of the Central Coast of California between Carmel and San Simeon, where the Santa Lucia Mountains rise abruptly from the Pacific Ocean. It is frequently praised for its dramatic scenery. Big Sur ha ...
or
Monterey) or System Settings (
Ventura).
Startup chime
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
chord
Chord may refer to:
* Chord (music), an aggregate of musical pitches sounded simultaneously
** Guitar chord a chord played on a guitar, which has a particular tuning
* Chord (geometry), a line segment joining two points on a curve
* Chord ( ...
s.
Mark Lentczner created the software that plays the
arpeggiated chord in the
Macintosh II. Variations of this sound were deployed until
Jim Reekes
Sosumi is an alert sound introduced by Jim Reekes in Apple Inc.'s Macintosh System 7 operating system in 1991. The name is derived from the phrase "so, sue me!" because of a long running court battle with Apple Corps, the similarly named music com ...
created the startup chime in the
Quadra 700
The Macintosh Quadra 700 was a personal computer designed, manufactured and sold by Apple Computer from October 1991 to March 1993. It was introduced alongside the Macintosh Quadra 900, Quadra 900 as the first computers in the Macintosh Quadra, ...
through the
Quadra 800
The Macintosh Quadra 800 (also sold with bundled server software as the Apple Workgroup Server 80) is a personal computer that is a part of Apple Computer's Quadra series of Macintosh computers.
Introduced in February 1993 alongside the first ...
.
[Whitwell, Tom (May 26, 2005]
"Tiny Music Makers: Pt 4: The Mac Startup Sound"
''Music Thing'' 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
The Macintosh Quadra 840AV is a personal computer designed, manufactured, and sold by Apple Computer from July 1993 to July 1994. It was introduced alongside the Centris 660AV
The Macintosh Quadra 660AV, originally sold as the Macintosh Ce ...
. 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
A twelve-string guitar (or 12-string guitar) is a steel-string guitar with 12 strings in six courses, which produces a thicker, more ringing tone than a standard six-string guitar. Typically, the strings of the lower four courses are tuned in o ...
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
The Twentieth Anniversary Macintosh (or "TAM") is a limited-edition personal computer released in 1997 to mark Apple's 20th birthday. The machine was a technological showcase of the day, boasting a number of features beyond simple computing, a ...
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 early 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. Since 2012, the Mac startup chime is 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 panel
A solar cell panel, solar electric panel, photo-voltaic (PV) module, PV panel or solar panel is an assembly of photovoltaic solar cells mounted in a (usually rectangular) frame, and a neatly organised collection of PV panels is called a photo ...
s 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.
Happy Mac
A Happy Mac is the normal
bootup
In computing, booting is the process of starting a computer as initiated via hardware such as a button or by a software command. After it is switched on, a computer's central processing unit (CPU) has no software in its main memory, so so ...
(startup)
icon of an
Apple Macintosh computer running older versions of the Mac
operating system. It was designed by
Susan Kare
Susan Kare ( "care"; born February 5, 1954) is an American artist and graphic designer best known for her interface elements and typeface contributions to the first Apple Macintosh from 1983 to 1986. She was employee #10 and Creative Director at ...
in the 1980s, drawing inspiration from the design of the
Compact Macintosh series and from the
''Batman'' character
Two-Face.
The icon remained unchanged until the introduction of
New World ROM
New World ROM computers are Macintosh models that do not use a Macintosh Toolbox ROM on the logic board. Due to Mac OS X not requiring the availability of the Toolbox, this allowed ROM sizes to shrink dramatically (typically from to ), and facilit ...
Macs, when it was updated to 8-bit color. The Happy Mac indicates that booting has successfully begun, whereas a
Sad Mac (along with the "Chimes of Death" melody or one or more beeps) indicates a hardware problem.
When a Macintosh boots into the
classic Mac OS
Mac OS (originally System Software; retronym: Classic Mac OS) is the series of operating systems developed for the Macintosh family of personal computers by Apple Computer from 1984 to 2001, starting with System 1 and ending with Mac OS 9. The ...
(
Mac OS 9
Mac OS 9 is the ninth major release of Apple Inc., Apple's classic Mac OS operating system which was succeeded by macOS, Mac OS X (renamed to OS X in 2011 and macOS in 2016) in 2001. Introduced on October 23, 1999, it was promoted by Apple as "T ...
or lower), the system will play its startup chime, the screen will turn gray, and the Happy Mac icon will appear, followed by the Mac OS
splash screen (or the small "Welcome to Macintosh" screen in
System 7.5
System 7, codenamed "Big Bang", and also known as Mac OS 7, is a graphical user interface-based operating system for Macintosh computers and is part of the classic Mac OS series of operating systems. It was introduced on May 13, 1991, by Apple Co ...
and earlier), which underwent several stylistic changes. Mac OS versions 8.6 and later also includes the version number in this splash screen (for example, "Welcome to Mac OS 8.6").
On early Macs without an internal
hard drive, the computer boots up to a point where it needs to load the
operating system from a
floppy disk
A floppy disk or floppy diskette (casually referred to as a floppy, or a diskette) is an obsolescent type of disk storage composed of a thin and flexible disk of a magnetic storage medium in a square or nearly square plastic enclosure lined w ...
. Until the user inserts the correct disk, the Mac displays a floppy icon with a blinking question mark. In later Macs, a folder icon with a question mark that repeatedly changes to the
Finder icon is shown if a
System Folder or boot loader file cannot be found on the startup disk.
With
Mac OS X 10.1
Mac OS X 10.1 ( code named Puma) is the second major release of macOS, Apple's desktop and server operating system. It superseded Mac OS X 10.0 and preceded Mac OS X Jaguar. Mac OS X 10.1 was released on September 25, 2001, as a free update ...
, a new Happy Mac was included. This is also the last version with a Happy Mac icon; in
version 10.2, the Happy Mac symbol was replaced with the Apple logo. In
OS X Lion 10.7, the Apple logo was slightly shrunk and a drop-in shadow was added. In
OS X Yosemite 10.10, the white screen with a gray Apple logo was replaced with a black screen with a white Apple logo and the spinning wheel was replaced with a loading bar. However, this only applies to Macs from 2013 and later, including the 2012 Retina MacBook Pros, and requires a firmware update to be applied. All earlier Macs still use the old screen. The shadow on the Apple logo was removed in
OS X El Capitan 10.11. In 2016 and later Macs (excluding the Early 2016 MacBook), the Apple logo appears immediately when the screen turns on.
The
Face ID logo for the
iPhone X was based on the Happy Mac.
Bomb screen

With the introduction of
Mac OS X, in addition to the blinking system folder icon, a
prohibition icon was added to show an incorrect OS version is found. The
bomb screen in the classic Mac OS was replaced with a
kernel panic
A kernel panic (sometimes abbreviated as KP) is a safety measure taken by an operating system's kernel upon detecting an internal fatal error in which either it is unable to safely recover or continuing to run the system would have a higher ...
, which was originally colored white but was changed to black in
version 10.3.
Sad Mac

A Sad Mac is a symbol in older-generation
Apple Macintosh computers (hardware using the
Old World ROM and not
Open Firmware, which are those predating onboard USB), starting with the original 128K Macintosh and ending with the last
NuBus-based Power Macintosh models (including the first-generation
6100,
7100,
8100, as well as the
PowerBook 5300
The PowerBook 5300 is the first generation of PowerBook laptops manufactured by Apple Computer to use the PowerPC processor. Released in August 1995, these PowerBooks were notable for being the first to feature hot-swappable expansion module ...
and
1400
Year 1400 ( MCD) was a leap year starting on Thursday (link will display the full calendar) of the Julian calendar. The year 1400 was not a leap year in the Proleptic Gregorian calendar.
Events
January–December
* Henry IV of England ...
),
to indicate a severe hardware or software problem that prevented startup from occurring successfully. The Sad Mac icon is displayed, along with a set of
hexadecimal
In mathematics and computing, the hexadecimal (also base-16 or simply hex) numeral system is a positional numeral system that represents numbers using a radix (base) of 16. Unlike the decimal system representing numbers using 10 symbols, hexa ...
codes that indicate the type of problem at startup. Different codes are for different errors. This is in place of the normal
Happy Mac icon, which indicates that the startup-time hardware tests were successful. In 68k models made after the
Macintosh II, the Chimes of Death are played.
Models prior to the
Macintosh II crash silently and display the Sad Mac, without playing any tone.
PowerPC
PowerPC (with the backronym Performance Optimization With Enhanced RISC – Performance Computing, sometimes abbreviated as PPC) is a reduced instruction set computer (RISC) instruction set architecture (ISA) created by the 1991 Apple Inc., App ...
Macs play a sound effect of a car crash, and computers equipped with the
PowerPC
PowerPC (with the backronym Performance Optimization With Enhanced RISC – Performance Computing, sometimes abbreviated as PPC) is a reduced instruction set computer (RISC) instruction set architecture (ISA) created by the 1991 Apple Inc., App ...
upgrade card use the three note brass fanfare death chime (A, E-natural, and E-flat), followed by the sound of a drum, same as the
Macintosh Performa 6200 and
Macintosh Performa 6300
The Power Macintosh 6200 (also sold under variations of the name Performa 6200, Performa 6300 and Power Macintosh 6300) is a series of personal computers designed, manufactured, and sold by Apple Computer from May 1995 to July 1997. The 6200 is ...
.
A Sad Mac may be deliberately generated at startup by pressing the
interrupt switch on
Macintosh computers that had one installed, or by pressing Command and Power keys shortly after the startup chime. On some Macintoshes such as PowerBook 540c, if the user presses the command and power keys before the boot screen displays, it will play the "chimes of death". The chimes are a fraction of normal speed and there is no Sad Mac displayed.
Old World ROM
Power Macintosh and
PowerBook
The PowerBook (known as Macintosh PowerBook before 1997) is a family of Macintosh laptop computers designed, manufactured and sold by Apple Computer from 1991 to 2006. During its lifetime, the PowerBook went through several major revisions and r ...
models based on the
PCI
PCI may refer to:
Business and economics
* Payment card industry, businesses associated with debit, credit, and other payment cards
** Payment Card Industry Data Security Standard, a set of security requirements for credit card processors
* Pro ...
architecture do not use a Sad Mac icon and will instead only play the error/car-crash sound on a hardware failure (such as missing or bad memory, unusable CPU, or similar).
Mac OS X 10.2 Jaguar
Mac OS X Jaguar (version 10.2) is the third major release of macOS, Apple's desktop and server operating system. It superseded Mac OS X 10.1 and preceded Mac OS X Panther. The operating system was released on August 23, 2002 either for single ...
and later instead use the
Universal "no" symbol to denote a hardware or software error that renders the computer non-bootable.
Chimes of Death
The Chimes of Death are the
Macintosh equivalent of a
beep code on
IBM PC compatibles. On all Macintosh models predating the adoption of
PCI
PCI may refer to:
Business and economics
* Payment card industry, businesses associated with debit, credit, and other payment cards
** Payment Card Industry Data Security Standard, a set of security requirements for credit card processors
* Pro ...
and
Open Firmware, the Chimes of Death are often accompanied by a Sad Mac icon in the middle of the screen.
Different Macintosh series have different death
chimes. The Macintosh II is the first to use the death chimes, a loud and eerie upward major
arpeggio
A broken chord is a chord broken into a sequence of notes. A broken chord may repeat some of the notes from the chord and span one or more octaves.
An arpeggio () is a type of broken chord, in which the notes that compose a chord are played ...
, with different chimes on many models. The
Macintosh Quadra,
Centris,
Performa
The Macintosh Performa is a family of personal computers designed, manufactured and sold by Apple Inc., Apple Computer, Inc. from 1992 to 1997. The Performa brand re-used models from Apple's Macintosh Quadra, Quadra, Macintosh Centris, Centri ...
(including the 6200 and 6300, which were also Power Macintosh models, only occurring after the screen lights up),
LC, and the
Macintosh Classic II play a generally softer and lower pitched version of the upward major arpeggio, followed by three or four notes, with slight variation depending on the model of the Macintosh. The
PowerBook
The PowerBook (known as Macintosh PowerBook before 1997) is a family of Macintosh laptop computers designed, manufactured and sold by Apple Computer from 1991 to 2006. During its lifetime, the PowerBook went through several major revisions and r ...
5300, 190, and 1400 use the second half of the 8-note arpeggio as found on the Quadra and Centris models, or the entire death chime if the error occurs before the screen lights up. The Macintosh Quadra 660AV and Centris 660AV use a sound of a single pass of
Roland D-50's "Digital Native Dance" sample loop, and the
NuBus based
Power Macintosh models (including 6100,
7100, and 8100) series use a car crash sound. The
Power Macintosh and
Performa
The Macintosh Performa is a family of personal computers designed, manufactured and sold by Apple Inc., Apple Computer, Inc. from 1992 to 1997. The Performa brand re-used models from Apple's Macintosh Quadra, Quadra, Macintosh Centris, Centri ...
6200 and 6300 series, before the screen comes on for these models, along with the
Power Macintosh upgrade card, use an eerily dramatic 3-note
brass fanfare with a rhythm of drums and cymbals; the former plays the 8-note arpeggio instead when the screen is on. The pre-G3 PCI Power Macs, the beige G3 Power Macs, the G3 All-In-One, and the PowerBook 2400, 3400, and G3 all use a sound of glass shattering; these models do not display a Sad Mac icon. Since the introduction of the
iMac in 1998, the Chimes of Death are no longer used in favor of a series of tones to indicate hardware errors.
See also
*
Booting
In computing, booting is the process of starting a computer as initiated via hardware such as a button or by a software command. After it is switched on, a computer's central processing unit (CPU) has no software in its main memory, so som ...
*
Power-on self-test
*
Screens of Death
In computing, a screen of death is an informal term for a type of computer operating system error message displayed onscreen when the system has experienced a fatal system error. Computer users have dubbed these messages "screens of death" because ...
*
Floppy Disk
A floppy disk or floppy diskette (casually referred to as a floppy, or a diskette) is an obsolescent type of disk storage composed of a thin and flexible disk of a magnetic storage medium in a square or nearly square plastic enclosure lined w ...
References
External links
The Original Macintosh: Boot Beep– Folklore.org
{{error messages
Booting
Sound trademarks
Macintosh firmware
Macintosh operating systems