Replying from memory:

On Mon, 10 Jan 2011 19:42:32 +0100
Jasper Valentijn <jasper.valent...@gmail.com> wrote:

> 2011/1/10 Super Biscuit <super_bisq...@yahoo.com>
> >
> > http://lowendmac.com/imacs/rev-d-imac-g3-333-mhz.html
> >
> > Read a few paragraphs down.  If the internal drive in question does not
> work, then find a compatible replacement. You're also looking at the fact that
> the rom is OldWorld and may need a few tweaks and twerps to get it going.

I think Super Biscuit is using "OldWorld" in a different sense here.

They were left officially left out in the cold on the generation step 
from Mac OS X 10.3 to 10.4, which sort of makes them an older world, but 
not "oldworld" when we are talking about how to boot a non-Mac OS.

iMac and iBook were NewWorld with respect to the ROM being actually not ROM.

Early iMacs do have some odd issues, though.

> Not sure if this is what you mean: "Tray-loading iMacs cannot boot
> from USB drives (see Apple Knowledge Base Article #58430, USB Info and
> Benefits of Dual-Channel USB)."
> If not please quote the relevant part please.
> 
> From Apple Knowledge Base Article #58430: "Bootable USB drives: A
> storage device such as a SuperDisk, Zip disk, or other USB storage
> drive can be used to hold a valid system folder and used at startup."

A common bit of old "knowledge" that may be lost in the shuffle, 
basically, iBooks that didn't have a Firewire port could not boot 
Mac OS X from any external drive. HD or CD/DVD was it. (Unless you 
did hardware hacks like hanging a PATA to SATA converter off the 
internal PATA ports, which isn't really getting around the problem.)

However, that was assuming you were booting Mac OS X and choosing the 
system to boot via the Mac OS X drive selector. Booting from open 
firmware was generally considered a separate subject. I have a vague 
memory that some of the G3s had firmware that was complete enough to 
see and boot from the USB port even though they couldn't bless the 
system folder via the Mac OS X boot selector.

My memory is also that some of the later G3s with firewire ports were 
even able to boot Mac OS X from the USB port the usual way.

> Basically my question to you is: "Did you try it?"

I have booted Mac OS X on G4 iBooks and Minis from the USB port, and 
I'm pretty sure it's part of the spec on all G4s, so it should just 
be a matter of getting the name of the USB port right.

Booting openbsd from USB on G3s, I'll defer to others on.

-- 
Joel Rees <joel_r...@sannet.ne.jp>

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