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Installing OS 10.2 on Beige G3
Authored by: Niru on May 30, '03 02:58:33PM

Bah. Spoke too soon.

I was building up my system, installing the updates incrementally, drivers, etc, and noticed a lot of crashes (finder) and applications failing to launch, etc. I assumed my OS was compromised, because I had installed it with the flaky battery.

So I went back and reinstalled 10.1, and the 10.2 upgrade. 10.1 went fine.

10.2 hung.

My theory:
My understanding of the OS X boot process isn't very detailed, but I believe that when you tell OS X to boot off of a certain drive, it attempts to load a new nvramrc file from that device, which is a FORTH script for Open Firmware to run at boot time, to configure your devices appropriately for that OS's drivers.

I believe that the 10.2 ROM (nvram FORTH script) must have some kind of bug, which, when applied to a Beige, causes some kind of IO hang. Or possibly, it causes the hang if the hardware isn't fully up to snuff (while the hang would not otherwise occur under 10.1). Since I do not have access to low-level debugging equipment, nor do I have much knowledge of FORTH, or how the OS X boot up process works in detail, I can't really say this for sure.

But it's my hunch. I've eliminated pretty much every other possible cause.

In the latest case, the HANG occurs during the copy, (wrting files), and the screen is still up, and mouse cursor moves, but nothing on the screen responds to clicks.
In other cases, I've seen the screen just go black, and all IO cease.

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