The easiest way to have a computer that could run the early OS X 10.0, would be to buy one.
•Introduced May 2001
Discontinued October 2001
Model Identifier PowerBook4,1
Model Number --
Order Number M7698LL/A (CD-ROM), M7692LL/A (DVD), M8520LL/A (Combo)
Initial Price $1299 (CD) $1499 (DVD) $1599 (CD-RW) $1799 (Combo)
•Original OS Mac OS 9.1
Later OS Mac OS 9.1 and Mac OS X (4P13)
Maximum OS Mac OS X 10.4.11
Hardware Test AHT (iBook) 1.2, 1.2.1, 1.2.2, 1.2.3, 1.2.4
•Bundled Software Mac OS 9.1, Mac OS X, QuickTime, iMovie 2, iTunes, AppleWorks, Microsoft
Internet Explorer, Microsoft Outlook Express, Netscape Communicator, Palm Desktop, FAXstf,
Cro-Mag Rally, Bugdom, Nanosaur, and Acrobat Reader software; Apple Hardware Test CD.
An iBook G3 (Dual USB) white polycarbonate model that looks like the later iBook G4, is
about the only model that can run OS X 10.0 Cheetah, and since the early White G3 is a
dual-boot model, these have the ability to also start the computer from original Mac OS9.1.
The included CD installers would do that.
There is no practical or possible way to be able to run a system that pre-dates the hardware
you'd hope to run it on, by so many years, & with other technical faults in the idea of doing so.
I've owned the first model iBook G3 500MHz 12" (Dual USB) also the last model iBook G4 1.33GHz 12"
and found some good characteristic of each end of that mult-facted series. Also have a PowerBook G4
12" 1.5GHz aluminum - needs logic board fixed & DC-in board; & have first-model MacBook 13" coreduo.
Other old model G3 Macintosh computers of correct build era specs, may be able to run Cheetah 10.0
but there isn't any practical software and almost no connectivity to anything, except an equally old Mac
that uses hard to get vintage/obsolete cables and ancient software. Mostly offline or local network.
For older systems, the Tiger 10.4.11 was probably the best, in the supported PPC hardware of the day;
and for later best systems, Snow Leopard 10.6.8 was best in Intel-based hardware, for several reasons.
However it is best to locate the correct hardware version computer for any of the operating systems that
could run in them, usually best if you find the computer which includes the correct vintage Mac OS discs.
Your other question, in a different topic thread, suggests you need to understand more about Mac OS &
also the more recent versions & changes across operating systems, hardware change, to modern specs.
There is a fair aggregate or compilation of information across many years of models with corresponding
operating systems, versions that work within the specified hardware of their era, in such sources online
as http://everymac.com and http://lowendmac.com plus depending on your newest Mac/PC, you may be
be able to get and use the download of offline database specifications from http://mactracker.ca.
In any event... to expand your point of reference and knowledge base to get the best use of vintage Macs.
Good luck & happy computing! 🙂