Glad you got it working!! 

Thanks!
If you're copying over the System folder, there's a chance it's not being "Blessed". If that's the case there's a terminal command you can run to bless the OS9 system folder from OSX.

As long as the Mac OS 9 disk drivers are installed the rest of your setup sounds good.

Can you please try these ROMs. If you place them in the OS9 System Folder it should eliminate the need to run those Open Firmware commands. I modified the iMic ROM to run the OFW command as part of the boot script.

Test ROM

Use this ROM if the above works:
Screamer ROM

If you don't get any crashes with those ROMS, then I would suspect it's something to do with the System Folder being unblessed or partitioning issues.
If your system does crash, reboot and hold the alt key and boot from OSX, then restore the original Mac OS ROM.

iMac G3s are a pain with multi-partition SSDs and I had a lot of trouble with this. The G4 may be similar. This page may also be helpful: iMac G3 Dual Bootable SSD Setup/

interesting. mbox1. made in china. 2002.

try and find a grace design lunatec v1/2/3 from the same time and you will never look back. the mbox1 cant hold its water.

You could put a switch in the jumper to activate standalone mode

Facetime

Hi all,
My G4 MDD's power button on the tower itself practically never works (maybe once or twice it worked out of many hundreds of tries, extremely rare). This is even after replacing the PSU with a verified working refurb from eBay. However, the power button on my connected 15" ADC Studio Display works every time. Graphics card is the stock Radeon 9000 Pro. Resetting the PMU did not help.

What would cause this behavior? Maybe a graphics card problem? Asking because I would like to connect a DVI monitor of some kind and not rely on the ADC display (which has a broken stand, as so many of them do) but that is currently not an option if it won't boot using the tower's power button.

Thanks in advance!

Have only briefly scanned that mod link — but wonder if the jumper
might also include a small “switchable” switch for reversing the mod?

Still an interesting idea. Thanks.

Well, thanks.
That’s enough for me to only include portions of entire serial numbers.

And pretty funny at that, too.

https://zachpoff.com/resources/digidesign-mbox-1-standalone-mod/

We can conclude that digidesign made focusrite design a USB powered Preamplifier with A/D conversion, but that option was never revealed.

Some say the Pre are atrocious, but still, is a Pre.

For guys that started with an M-Box and jumped to a TDM is a gift. Even on 16 bits 888 the SPDIF is 24 bits, and you have your first Pre, ready.

And that only with a harddrive jumper. 

I read somewhere that a real serial was needed for an Apple ID or iChat or some Mac OS or Apple Store.

A user gave a G3 serial, they laught but they allowed that thing.

Sorry, can´t remember more details.