MacOSX update wiped out Yaboot?

[Eric D.]

I dug up an e-mail that I have in my "Hints & Tips" folder (I file e-mails &
threads that I've used... saves having to ask the list after failing to find
the answer in the Google (not) search engine... which is strange b/c I find
that for regular web searches Google is by far the fastest and also brings
up the most useful collection of links).

The short story to set yaboot as startup (see below for full, detailed
story):

setenv boot_device hd:9,ofboot.b

Eric.

on 25/4/02 13:04, wmkruse at wmkruse@charter.net wrote:

> Ah yes... the finger cramping combination.  Yes it worked, thanks!  It
> appears that I must use this method to initiate Yaboot each time I want
> to boot into YDL, unless I reinstall the Yaboot?  I tried rebooting a
> couple of times and each time it went directly to MacOS.
> 
> On Thu, 2002-04-25 at 11:18, Eric D. wrote:
>> It's command-option-o-f & I _know_ it works on a B&W G3 ;)
>> 
>> Then type the:
>> boot hd:9,yaboot command (or whatever ID # is relevant)


----------
From: "Eric D." <liriodendron@mac.com>
Date: Sat, 16 Mar 2002 14:10:52 -0500
To: <liriodendron@mac.com>
Subject: Open Firmware, "blessing" partitions, setting boot disk, yaboot

Eric's summary of the Open FirmWare commands.
To set boot device: setenv boot_device hd:9,ofboot.b
To boot a device temporarily: boot hd:9,ofboot.b  boot hd:9,yaboot

From: Ben Stanley <bds02@uow.edu.au>
Date: Tue, 05 Mar 2002 14:59:40 +1100
Subject: Re: Open Firmware, "blessing" partitions & restarting

The yaboot documentation says that the boot partition should not ever be
mounted, especially by OS X, becuase it 'un-blesses' it.

You should boot Linux off the CD (see the engineer's notes at the bottom
of the Yellow Dog installation instruction page) and then re-run ybin to
fix this.

And, btw, I've had problems with the yaboot that comes with ydl 2.1. I
recently upgraded to the more recent one in the yellow dog updates
directory, and the problems went away. (One of my problems was with
ext3, but I don't know what caused the other problems.)

And as for mounting hfs partitions from Linux, I don't recommend that -
the kernel hfs implementation has suffered bit-rot. Use hfsutils instead.

Ben.

on 4/3/02 22:49, Eric D. at liriodendron@mac.com wrote:

> Hello ya'll, I've run into a little bit of a problem here. Somewhere in
> booting an OS X installer disk (to do a verify), booting Norton Systemworks CD
> & defragging the two Mac partitions I've lost the boot loader.
> 
> One interesting side-effect of Norton Disk Doctoring the OS X partition was
> that OS X now sees the "boot" partition on its desktop. Can the "boot"
> partition be used to transfer files back-and-forth between OS X & Linux & is
> it a dangerous idea to do so? (I'll find out soon enough if it's easy to
> access boot on the Linux side (provided I get Linux back up and running)).
> 
> L8r, Eric.
> 
> on 28/2/02 9:08, Jonathan Singer at jsinger@genome.wi.mit.edu wrote:
> 
>>> (6) If I set a Mac OS partition as a startup disk I lose the ability to boot
>>> the Linux partition. How can I reset the Linux parition as a startup
>>> partition (with yaboot... don't quite understand how that works but I
>>> presume it's the boot loader).
>> 
>> I have this too. (It has to do with "blessing" of partitions.) My fix is to
>> boot into Open Firmware (cmd-opt-O-F) and do a 'boot hd:x,yaboot' where x is
>> your root partition number. (Or is the boot partition number? I forget.) Run
>> ybin as root once you've logged in.
>> 
>> Is there a better method? The real answer is to create separate OS 9 and OS X
>> partitions and use yaboot to pick one or the other. For space reasons, I
>> don't want to do that.