Hy there, just curious, is there a special reason to use the OpenFirmware to boot the .iso instead to use the built in boot manager ?
Last tested with a MacMini G4 and the 6.9 .iso (yes, it has a built in drive but the external USB SuperDrive was available to at this time and IIRC as I had troubles booting burned DVD medias using a external Teac optical drive - it should work, see below). You can boot a optical media using hold c or use the option (left alt) key at boot instead of entering the OpenFirmware. But that expects, that the drive is supported, you write the .iso correctly and the used media is supported correctly (the OP provides no derails about that). As above mentioned, got it to work correctly only using good old CD-R medias. For boot after install or autoboot see the link above in the conversation. As far as I know and and as discussed at misc@ the .iso is no dual image, thats the reason why the amd64 (and other) platforms provides a .iso and a .img Regards, Christoph Christoph R. Winter > Am 13.06.2021 um 13:08 schrieb Navan Carson <na...@airpost.net>: > > > >> On Jun 10, 2021, at 8:04 AM, Samuel VISCAPI <samuel.visc...@no-log.org> >> wrote: >> Dear all, >> First post on this mailing-list :) >> I attempted yesterday to install OpenBSD 6.9 on an iBook G4 / PowerBook >> 6,7 (currently running MorphOS) with an USB drive. I downloaded this >> image: https://cdn.openbsd.org/pub/OpenBSD/6.9/macppc/install69.iso and >> dd'ed it on GNU/Linux Debian 11 x86_64 to a working USB drive with the >> following command: >> dd if=/path/to/install69.iso of=/dev/sda >> Once the image properly copied to the USB > > Do the .iso files work when written to a USB drive? Other architectures have > .img files for that.