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

I would try to manually mount the USB to /cdrom by using a console 
(CTRL-Alt-F2, CTRL-Alt-F3, Alt-F2, Alt-F3)

Something like

mount /dev/sdb1 /cdrom

I don’t know the device name, so sdb1 could be something else.

Regards,
Jeroen


Joe Flowers schreef op 2025-08-28 18:53:
> 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?
> 
> ---
> 
> debian-12.0.0-ppc64-NETINST-1.iso
> SHA256:
> 1483ae25b215e69cbd2268b4aa58b23bc7f5522f6fc5697213af39cee6704c50
> 
> rufus-4.9p.exe
> SHA256:
> 497f796e6d076d4855d697965c04626e6d3624658fce3eca82ab14f7414eede2
> 
> ---