Investigate Macintosh Classic ROM booting

[Lucas-mother3]

A neat easter egg in the Macintosh Classic was the ability to boot from ROM. The function could be access by holding ⌘ Cmd-⌥ Opt-X-O when booting up. This then loads up System 6.0.3 off from that. Naturally, this is read only (it's in the name after all), but it's interesting.

Mini vMac already has support for the model, but I was considering checking it out in Infinite Mac, but I'm thinking about skipping the whole keyboard shortcut (as I struggle with pressing the quite unusual keybind), and directly boot to ROM as a custom instance. Granted it'll be hard, but if somehow, there's a way to copy the contents (I hear that debugging tools are stored in RAM) to a disk image, using something like Disk Copy, then it'll reduce some frustrations. That, or adding the ability to automatically press the combination in that instance on boot.

Here's a screenshot of the easter egg: