Re: Performing installer tests on PowerMac with USB sticks

["S.G.A. Hubers" <shubers79@gmail.com>]

Hello all,

In response to the booting G4 from USB...

I booted my iBook G4 (A1134 2005 model with 1,42 GHz cpu and 1GB DDR) with the string :

boot usb0/disk@1:2,\\yaboot

Going straight into the second partition on the USB, where all the boot information is stored. Some use the third partition (replace the 2 with a 3 in the command), however; the third partition contains the live boot. You want the second partition to get the command-line environment.

Next I started the install with ‘install32’ and loaded Linux onto my hard disk.

After finishing, I made the yaboot load with flags:

radeon.modeset=0 radeon.agpmode=-1 radeonfb=1024x768-32

Since my iBook G4 has an old Radeon 9600 GPU in it. Hence the flags.

I don’t know how this would translate to loading GRUB and booting Linux on G4’s, but I thought this might be of considerable help.

Kindest regards,

Stephan Hubers

Verstuurd vanaf mijn iPhone

Op 30 apr. 2019 om 18:07 heeft Steve Burkhart <benzguy1197@gmail.com> het volgende geschreven:

This has worked for me on every ibook / powerbook I have tried it on.
First check to see where your usb stick is located. You would do

dev usb0

ls

dev usb1

ls

etc.. until you find the one that has @disk1

this is the one that you want to tell OF to boot from. So, lets say
your usb stick is at usb0. You would do

boot usb0/disk@1:,\\yaboot



On 4/30/19, Karl <mpc7500v2@gmail.com> wrote:

Last Gen of Powerbook G4 12“ doesn’t boot from USB also.

Am 30.04.2019 um 16:08 schrieb John Paul Adrian Glaubitz

<glaubitz@physik.fu-berlin.de>:

On 4/30/19 3:49 PM, aggaz wrote:

(snip)

I find the documentation from NetBSD be the best companion to exploit

OpenFirmware, in case of problems I suggest to take a look at it [1,2].

[1] https://www.netbsd.org/ports/macppc/faq.html

[2] https://cdn.netbsd.org/pub/NetBSD/NetBSD-8.0/macppc/INSTALL.html

Thanks. That's extensive enough.

P.S: Are ISO images capable to boot with GRUB instead of yaboot already

available for the masses? If so I would like to try to boot one.

No, I haven't created any test images yet. Building a bootable image with

GRUB is quite complicated and I expect the first rounds of the image to

be completely broken, so there wouldn't be much sense to publish

anything.

Adrian

--

.''`.  John Paul Adrian Glaubitz

: :' :  Debian Developer - glaubitz@debian.org

`. `'   Freie Universitaet Berlin - glaubitz@physik.fu-berlin.de

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