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Mac OS X Public Beta

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Year released:
[www].se [ftp].se [mirror].us [mirror].de
ZM691-2794-A.toast_.sit (393.63 MB)
MD5: fcf3d621b95ff50fd4bf82dfaee5c246
For Mac OS X
[www].se [ftp].se [mirror].us [mirror].de
ZM691-2858-A.toast_.sit (335.30 MB)
MD5: e5066dfc9307b46983d1f72a7095e4e6
For Mac OS X
[www].se [ftp].se [mirror].us [mirror].de
Z693-3135.toast_.sit (133.23 MB)
MD5: 229717fe4ffe43da97bb334537c5822a
For Mac OS X
[www].se [ftp].se [mirror].us [mirror].de
Z693-3135_oct_2000.toast_.sit (132.07 MB)
MD5: 22810d768a4d040c41c3343efe9a455b
For Mac OS X
[www].se [ftp].se [mirror].us [mirror].de
Guides on emulating older applications

    The Mac OS X Public Beta (internally codenamed "Kodiak") was an early beta version of Apple Computer's Mac OS X operating system Cheetah. It was released to the public on September 13, 2000 for US$29.95. It allowed software developers and early adopters to test a preview of the upcoming operating system and develop software for the forthcoming operating system before its final release. It had a build number of 1H39.

    The Public Beta succeeded Mac OS X Server 1.0, the first public release of Apple's new NeXT OpenStep-based operating system, which used a variant of the classic Mac OS' "Platinum" user interface look and feel. The Public Beta introduced the Aqua user interface to the world. Fundamental user interface changes were revealed with respect to fonts, the Dock, the menu bar (with an Apple logo at the center which was later repositioned, due to public request). System icons were much larger and more detailed, and new interface eye candy was prevalent.

    -- Wikipedia

Download 1: Mac OS X Public Beta 1H39 (ZM691-2794-A)
Download 2: Mac OS X Public Beta 2E14 (ZM691-2858-A)

Download 3, 4: Public Beta Developer Tools (Z693-3135) out of which one is also marked October 2000.

The Public Beta expired on May 15 2001, so you will need to set the clock back to a suitable date to install and run.

There were two Public Beta builds. 1H39 was for sale in the US, while 2E14 was the International version (with extended international support).

Architecture: PPC (Carbonized)

System requirements (circa 2000 or earlier G3 & G4 Macs):


MikeTomTom's picture
by MikeTomTom - 2021, January 26 - 1:29am

@larbob: Thanks for the timebomb patch.

I was unable to see your "Sucess!" screenshot. If possible could you either add it to the screenshots above or use the MG's free Image hosting service. Thanks.

larbob's picture
by larbob - 2021, January 23 - 1:57am

Some notes on the timebomb:
* It seems to be enforced by
* from DP4 and Cheetah don't work on Public Beta
* In my testing, it seems that once it's been tripped even if you set the date back again it still won't let you log in
* The timebomb being tripped doesn't stop you from logging in over Telnet/FTP/etc. if those services are enabled

Thankfully, it's relatively easy to bypass. Move /System/Library/CoreServices/ to something like /System/Library/CoreServices/

You can then replace it with a script like the following:

/System/Library/CoreServices/pbs &
sleep 2
/System/Library/CoreServices/ &

Make sure you mark this as executable by running chmod +x /System/Library/CoreServices/ as root.

This will get you a fully functioning desktop logged in as root. Notably it seems like regular users aren't allowed to talk to the window server unless they've actually logged in and a desktop has been started so this method leaves you as root, but it's not like OS X Public Beta is secure anyway!


vlad557776's picture
by vlad557776 - 2019, July 14 - 9:01pm

There's an issue with all PB ISOs I have seen: they're making an unbootable partition after some number of installs.

eisnerguy1's picture
by eisnerguy1 - 2019, March 27 - 6:04am

semvalidade2006, I'll try and write up something in the next few days. It's kinda in-depth.

semvalidade2006's picture
by semvalidade2006 - 2019, March 27 - 5:23am

eisnerguy1, what is the qemu setup you used to run the beta?

eisnerguy1's picture
by eisnerguy1 - 2019, March 27 - 1:08am

os9er, I've been running this in Qemu. Been working pretty well. The only issue are internet and sound not working entirely.

os9er's picture
by os9er - 2019, March 27 - 1:02am

I wish I still had the machine so I could test that; it ceased to function awhile back, so I got rid of it... xP

If I ever obtain another one, though, I'll be sure to try it...

IIGS_User's picture
by IIGS_User - 2019, March 19 - 7:07pm

I also own this PowerBook G3, with 400 MHz, 384 MB of RAM, replaced myself the internal 30GB hard disk drive with an IDE-to-SD card converter, inserted a 128GB SD card and it works well.

Have you already tested the external VGA display port with 3D accelerated games?
My experience so far, the external VGA port does not display 3D graphics.

A preferential point to the external VGA connector is:
The screen output can be forwarded to a VGA-to-HDMI converter.

os9er's picture
by os9er - 2017, July 7 - 7:54pm

Successfully installed onto a recently acquired PowerBook G3 500 MHz "Pismo" with 768 MB RAM and a 40 GB HDD. It's very interesting, some of the functionality is quite different than in the final version of 10.0.

muttztfz's picture
by muttztfz - 2015, January 25 - 5:13pm

That's an interesting view back in history. I just installed it once again on my Power Mac G4 AGP Graphics. For a beta version, it really feels quite stable and looks not bad at all. Yes, there are some issues (sluggish window action) but other than that: good quality! I don't see any performance issues (mentioned in press articles of that time) and I tested on a Single-450 MHz G4 with 512 MB memory, ATI Rage AGP, 80 GB HDD as the only (IDE master) HDD.

By the way, the included preview videos (movie commercials) are awful! Not one of these movies is still a highlight today…

Working with the Mac OS X Public Beta, I found myself with one thought after the initial euphoria: what should I work with? Internet Explorer is not usable anymore, there is literally no software compatible with Mac OS X 10.0 – so what is it good for?!?

There are also hardware issues: it works only on a very limited selection of Apple hardware of that time: an ATI Rage 128 is good, but I doubt it will run on any newer Radeon or nVidia card.

So, since it's installed: what software is still available (for download) that runs on the Public Beta?

os9er's picture
by os9er - 2014, March 18 - 8:34pm

Iʻve never seen the Public Beta before. Looks cooler than most other versions Smile