Installation, Debian 12, iMac G5, USB thumb drive => “Your installation media couldn’t be mounted. “

Joe Flowers <[email protected]>
Newsgroups gmane.linux.debian.ports.powerpc
Message-ID <CA+4=ZEP2KWsJ=vR6F17tbGjfXT_mjM4SSFnS3XWq6WgvEm-v1Q@mail.gmail.com>
On the “Detect and mount installation media” step, I get, “Your
installation media couldn’t be mounted. “

I burned debian-12.0.0-ppc64-NETINST-1.iso on a 4GB USB drive with
rufus-4.9p.exe. Rufus said it had to use the dd method.

When the iMac G5 is booted up with Mac OS X Version 10.5.8, I can see and
browse the USB drive and read text files on it.

I can boot to the USB drive with Federico Vaga’s excellent post (
https://lists.debian.org/debian-powerpc/2024/02/msg00007.html => boot
usb0/disk@1:,\boot\grub\powerpc.elf), and the Debian installation seems to
proceed fine until I get to this error.

“Your installation media couldn’t be mounted... “ “Retry mounting
installation media?”

I have not been able to get the Built-in Ethernet port nor a USB to
Ethernet dongle to work when booted in Mac OS X, but I was hoping the
Debian installation media could work with either of those two Ethernet
hardware options. I do not have a WiFi card in this iMac G5, apparently.

Any ideas, please?

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debian-12.0.0-ppc64-NETINST-1.iso
SHA256: 1483ae25b215e69cbd2268b4aa58b23bc7f5522f6fc5697213af39cee6704c50

rufus-4.9p.exe
SHA256: 497f796e6d076d4855d697965c04626e6d3624658fce3eca82ab14f7414eede2

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