mattkubaNov 10
Rairii   
low level emulated imac g3
hfs standard formatted partition
system folder from 7.6 chrp copied over
mac os rom fron imac 8.1 copied in
and... it just boots???

#MacOS #ClassicMacOS #CHRP
Nov 9 at 11:34pmWeb
Show threadArnanNov 9
@Rairii magic!
Show threadaramyaNov 9
@Rairii how would dingusppc compare to qemu-system-ppc at its current state?
Show threadRyNov 10
@Rairii it would be super cool if this ended up allowing 7.6 to boot on other new world macs
Show threadfinkNov 10
@Rairii aha! I was poking at those ISOs and was musing that they might be able to work on the 1st gen iMac. Very cool.
Show threadMac84 🍏Nov 10

@Rairii Interesting, I just tried it on my iMac G3 (Rev A) with the original CD-Rs. All three discs fail to boot, either by selecting it as a Startup CD, holding down C at startup, or via 'mac-boot' in Open Firmware. 🤔

The iMac is running 8.6 from the hard drive, but I'm unsure if that would prevent it.

Show threadRairii   Nov 10
@mac84tv yeah, the original media won't work:
- 7.6 needs a tbxi for imac g3 to boot it (and under emulation the one from 8.1 imac works fine)
- 8.0's tbxi only supports hydra, so it errors on imac g3 because the interrupt controller is unsupported
Show threadMac84 🍏Nov 10

@Rairii Interesting, I’ll try an installed folder on the iMac G3 and see… now to find a spare IDE drive or adapter 😅

Anything else I should modify to give it the best shot?

FYI - When trying an installed folder on a beige G3 it tries to boot but errors out.

Show threadRairii   Nov 10
@mac84tv for me under emulation it just worked when putting the 8.1 tbxi in, remember to use hfs standard and not hfs+
Show threadMac84 🍏Nov 10

@Rairii thank you! Sorry, I’m not familiar with the term “tbxi”, is this a hidden file in the System Folder or a ROM file? I recognize it from Open Firmware tinkering ages ago but my brain is not making the connection.

I have my iMac G3 here so I’m curious to get the same results you have on real hardware 👍 thanks!

Show threadRairii   Nov 10
@mac84tv the Mac OS ROM file in the system folder
Show threadRairii   Nov 10
@mac84tv btw someone tried it on real hardware and it worked (usb hid worked too)
Show threadMac84 🍏Nov 10

@Rairii cool!

Hm, what version was your OS ROM and was it sourced from an iMac restore/install CD or from an installed 8.1 system folder on an iMac?

I tried both, ROMs were v1.1 and 1.6, and they just stopped at the “startup disk won’t work” error. 🤔

I’m probably missing something simple 😅

Show threadMac84 🍏Nov 10
@Rairii oops, meant to attack this photo
Show threadRairii   Nov 10
@mac84tv it wont boot from an HFS Extended partition, you need to reformat as HFS Standard
Show threadMac84 🍏Nov 10

@Rairii yes, the HD is formatted as Mac OS Standard / HFS. It has multiple partitions but they are all HFS, hm.

If I install OS 8.1 it boots fine, interesting.