BTW, did you know that OS9.2.2 can handle large, as in 1TB+, drives? With Mac OS ROM version 9.5.1, my blue & white G3 has no trouble with its pair of terabyte Seagates under OS 9. Apple obviously added LBA48-bit addressing very late in the game.

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I've been collecting these high version number Mac OS ROM files for this very reason. I think the highest they went was 10.2.1, which I haven't managed to find. I do have the 9.8.1 one though which apparently will get some of the early classic-only iMacs booting native OS9.