This is a great comprehensive article on the "why" and there are good YouTube videos on the "how." What the article is missing that makes it even better is putting an SSD in which makes it even faster of course. You can get an untested Mac mini G4 for about $60 on eBay and the rest of the parts (SSD, PATA-mSATA adapter, RAM if less than 1 GB, power adapter, any missing screws, clock battery, etc.) will run you another $60 to make the ultimate Mac OS 9 machine. If you're comfortable taking things apart and putting them back together it's not too bad.<p>A quick tip: be sure to reset the PRAM with command-alt-p-r holding down during restart until you hear 3 chimes. Then while the machine is booting hold down command-alt-o-f and type "reset-nvram" and then "set-defaults" and then "reset-all" (all of this is in open firmware) before installing Mac OS 9 to make sure firmware is in its original state.<p>I came across this idea of SSD upgrading and installing Mac OS 9 in April 2024 and bought three broken ones to build one for my son. [0] When the first one worked, I ended up figuring, why not just finish the other two and sell them on eBay?<p>That led me into a hobby business. I've now cleaned, upgraded with SSDs, and sold about 70 of them. The "business" basically breaks even, so it truly is a hobby. In fact I invested so much in inventory buying 90 of them in a lot at the end of 2024 that I am negative right now. I will probably turn a slight profit in 2025. But it's fun and if you want you can buy one from me at:
<a href="https://os9.shop" rel="nofollow">https://os9.shop</a><p>Sorry for the self-promotion, but very relevant!<p>0: <a href="https://x.com/davekopec/status/1795872492386398683" rel="nofollow">https://x.com/davekopec/status/1795872492386398683</a>