Re: Installation media couldn't be mounted

[Jeroen Diederen <jjhdiederen@zonnet.nl>]

Hi,

I have a lot of experience of booting from USB on PPC based Macs. It is 
possible. You have to dd the image into the stick:

Flashing USB sticks is quite easy under OSX or Linux with the following 
command:
dd if=/path/to/debian.iso of=/dev/sdx
(x being a number, sdx is the device name of the stick).
Do not use a partition on the stick, so only the whole device.

Success
Jeroen

John Paul Adrian Glaubitz schreef op 2020-10-20 15:14:
> Hi Thomas!
>
> On 10/20/20 3:07 PM, Thomas Schmitt wrote:
> > Rufus' "dd" mode is known to be suitable.
> > The displayed size of /dev/sdb1 matches what i would expect from a 
> > correct
> > plain copy.
> > So i think this part succeeded.
>
> That might be the case. But I cannot provide support for that at the 
> moment.
>
> If someone wants to deviate from the tested standard way, they're on 
> their own.
>
> >   
> > https://cdimage.debian.org/cdimage/ports/snapshots/2019-07-03/debian-10.0-powerpc-NETINST-1.iso
> > was made by genisoimage with the old layout:
> > - CHRP partition in MBR (size 363810 KiB) starting at LBA 0,
> > - a single Apple partition (size 363802 KiB) with HFS (not HFS+),
> > - APM block size is 512 (i.e. the HFS might be mountable by Linux).
> >
> > Can the installed system mount the 10.0.0 ISO from USB stick partition 
> > 1 ?
>
> I know that the ISO images work fine when burnt to CD. I also think
> there were reports
> from users who copied the images onto USB drives with "dd", but I'm not 
> sure.
>
> I've personally not really tested USB booting and installation on 
> PowerMacs.
>
> Adrian