Hello ,

I have one computer where the cd drive is faulty so id like to boot off firwire 
drvi externally. It is a powermac g5.

Does someone know how to do this?


Normally i boot into open firmware and type there

Boot cd:\install\yaboot

Von meinem iPad gesendet

Am 22.10.2017 um 07:05 schrieb Mark Balantzyan <mark.balantz...@gmail.com>:

> It may also be worthwhile to consider (force-)booting from Optical Drive on 
> PMacs/ppc64 as selectable from the GRUB menu. The (former) Yaboot has this 
> option. Discs of a Linux-nature may or may not be detected from OF, I have 
> found.
> 
> It’s probably quite lofty already to consider FireWire and USB-booting from 
> the GRUB, but maybe optical/super-drive-booting as a minimum?
> 
> Thank you,
> MB
> 
> 
>> On Oct 21, 2017, at 5:59 PM, Mark Balantzyan <mark.balantz...@gmail.com> 
>> wrote:
>> 
>> My bad, correction on my last reply-all:
>> 
>>> P.S. I understand that the new GRUB is likely not going to replace 
>>> OpenFirmware, so I am requesting just to be able to still boot from USB + 
>>> Firewire on the G5 Quad and USB on the G5 Dual 2.0 from the bootloader, and 
>>> not have to manually drill into OF to do that.
>> 
>> 
>> I meant still boot from USB + FW on the Quad and still boot from FireWire on 
>> the G5 Dual 2.0, not still boot from USB on the G5 Dual! Arr, so confusing. 
>> Sorry. Thanks.
>> 
>> Mark
>> 
>> 
>> 
>>> On Oct 21, 2017, at 5:53 PM, Mark Balantzyan <mark.balantz...@gmail.com> 
>>> wrote:
>>> 
>>> Hello everyone,
>>> 
>>> Long time no…erm.
>>> 
>>> "We are actually working on making GRUB the default bootloader for Debian
>>> powerpc and ppc64. It is already the default bootloader when installing
>>> on PREP/CHRP PowerPC machines.
>>> 
>>> There is still some work to do for Apple NewWorld machines though but
>>> I am confident that this will be finished within the next few weeks.”
>>> 
>>> For added compatibility, I would please like to put forward that my 
>>> (NewWorld?) G5 PMacs, have not been designed to be able to boot from USB. 
>>> Firewire yes, but not USB. Most definitely one of them, that’s for sure. 
>>> Therefore, this may affect OpenFirmware awareness(es) required for 
>>> implementation in the new GRUB code. Namely, I would like to say please 
>>> implement whatever’s needed to allow say, a G5 Pmac Quad to still boot from 
>>> USB + Firewire, and a G5 Pmac Dual 2.0 to still boot from firewire from 
>>> both bootloader and OF (open firmware).
>>> 
>>> I would like to clarify that I haven’t tried any of the installer images 
>>> yet, so this is not a report of the project’s current functionality, but of 
>>> stuff as recent as a stuffed-up wheezy Jessie combo installation that I 
>>> still have (not under use).
>>> 
>>> P.S. I understand that the new GRUB is likely not going to replace 
>>> OpenFirmware, so I am requesting just to be able to still boot from USB + 
>>> Firewire on the G5 Quad and USB on the G5 Dual 2.0 from the bootloader, and 
>>> not have to manually drill into OF to do that.
>>> 
>>> Thanks,
>>> Mark 
>>> 
>>> 
>>>> On Oct 21, 2017, at 12:03 PM, John Ogness <powe...@ogness.net> wrote:
>>>> 
>>>> On 2017-10-21, Tony Breeds <t...@bakeyournoodle.com> wrote:
>>>>>> This reverts commit f7a364631f2a8975ecca56668a19ee0a66c1ddcd.
>>>>>> 
>>>>>> An iBook G4 (PowerBook6,5) was unable to boot when linking to the
>>>>>> lower address. Revert back to 2MB.
>>>>>> 
>>>>>> Signed-off-by: John Ogness <powe...@ogness.net>
>>>>>> ---
>>>>>> I could not find any references about _why_ yaboot was moved
>>>>>> from 2MB to 1MB. I did not bother to see how low I could get
>>>>>> it on my iBook. If 2MB is too high for some machine, I can
>>>>>> investigate to see how low I can go.
>>>>> 
>>>>> This was done as 'large' kernels couldn't be loaded as the RMA was too
>>>>> fragmented.  Moveing it down to 1MB reclaimed just enough that we were
>>>>> fine.
>>>>> 
>>>>> I assume that the yaboot-mainline and 1.3.17-4 tests we made with the
>>>>> same kernel/intrd combination.
>>>> 
>>>> Yes. From Debian/sid, linux-image-4.13.0-1-powerpc version 4.13.4-2.
>>>> 
>>>>> Can you get me a dump of your RMA memory properties and sizes of the
>>>>> kernel and initrd?
>>>> 
>>>> I'm not sure what you mean by "RMA memory properties" or how best to
>>>> "dump" them. Here is some information retrieved from OpenFirmware...
>>>> 
>>>> excerpt from 'printenv':
>>>> real-mode? false
>>>> real-base -1
>>>> real-size -1
>>>> load-base 0x800000
>>>> virt-base -1
>>>> virt-size -1
>>>> ram-size 0x30000000
>>>> 
>>>> excerpt from 'dev /memory' '.properties':
>>>> available 00003000 2fbed000
>>>> 
>>>> The initrd.img is 18,543,719 bytes.
>>>> The decompressed initrd.img is 48,723,456 bytes.
>>>> The vmlinux is 11,868,000 bytes.
>>>> 
>>>> John Ogness
>>>> 
>>>> 
>>> 
>> 
> 

Reply via email to