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Dr. N.R. Helps
Medical Research Council Protein Phosphorylation Unit
College of Life Sciences
MSI/WTB/JBC Complex
University of Dundee
Dundee
DD1 5EH
Scotland

t: 44 (0)1382 384745 (office)
t: 44 (0)1382 388019 (lab)
f: 44 (0)1382 388729
e: [EMAIL PROTECTED]
w: http://www.dnaseq.co.uk/
w: http://www.dundee.ac.uk/lifesciences/mrcppu/

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>>> Nicholas Helps 11/15/07 3:24 PM >>> 

Hello all,

I have been working with Debian for quite a few years now and using powermac G3 
machines with extra network cards in them as routers and firewalls, etc. These 
machines were set up back in the days of Woody and have been kept uptodate with 
security updates, but otherwise pretty much left untouched. Due to the issues 
around the firmware in these machines and because it was useful, I always set 
them up to boot initially into mac OS9 then use BootX to hand over the Debian. 
This worked a treat.

However, I thought it would be good come up to date by installing Etch instead. 
I used a free machine that was not actually in use and ran the install using 
the current network install ISO. Things have changed since the days of woody 
and it now seems that floppy images (boot image and root image) are no longer 
used. Hence, I copied the initrd.gz file over to the mac HD and set that as the 
ram disk for the install. I also copied across the linux kernel and put that 
into the kernels folder in the system folder. Using that allows me to boot into 
the installer and using the installer I deleted the previous linux partition 
(hda7) and swap (hda8) and made new ones. Then installed the base system, 
etc,etc all the way through to where it runs tasksel. I just leave that at the 
basic system for now. Following on some more, finally we get to the point of 
trying to install Quik (which I don't need) and it gives an error anyway, since 
I have selected ext3 file system that is not supported in quik. I therefore say 
to carry on without a boot loader. Everything goes fine all the way to 
rebooting into the new system. However, when I do that, OS9 will not boot up. I 
just get the flashing disk symbol with a question mark on it. Popping the OS9 
CD and booting off that and then running disk setup shows me that the HD has 
somehow been altered so it is not recognised properly as a mac HD. During the 
partitioning step, I did not alter anything other than hda7 and 8.

I have found that I can reinstall the apple hard disk driver onto the disk and 
this then gets OS9 up and working. However, I cannot then boot into Debian, 
since the boot process gets a little way in and then I get a kernel panic at 
the point where it tries to mount the file system (error about no file system 
at /dev/hda7).

I have done this several times now and the same thing happens every time. The 
install goes fine but then I end up with a completely unusable machine.

I am wondering if I am going about the install process wrongly (ie using the 
initrd.gz file). I can't find anything really useful in the install manual or 
using Google. I will probably end up looking really stupid when someone points 
out an obvious mistake I have made, but I can live with that.

If anyone has got etch installed on the beige g3 (its a 266 mhz machine, but I 
can't tell you the firmware version, etc. Would need to find out how to get at 
this) and can share their expertise, it would be most appreciated.

Thanks in advance,

Nick.

So, here is the way I got it to work....

First off, I have to thank Rick for a very helpful discussion about this. 
Without his help, I would not have been able to get this baby working!

I have OS9.2 on a circa 500 meg HFS+ partition, leaving the rest for debian. I 
use BootX as a boot loader. I used the netinstall CD for Etch.

First boot into OS9 with the Etch CD in the CD drive. Copy the vmlinux kernel 
from the CD install directory and put it into the kernels folder in the system 
folder. Copy the initrd.gz image to the BootX folder. Select the BootX 
application and tell it to use the vmlinux kernel and set the RAM disk to 
initrd.gz image. In the additional kernel arguments box, type 
"DEBCONF_PRIORITY=low" (no quotes). Boot into linux.

The installer will start. Go through this answering questions. When you get to 
the partitioning section, Partman will run. You should choose "manual" as your 
partitioning method. Select the free space and make a linux partition with Ext3 
format and choose to mount "/" on it. On my machine this then becomes 
/dev/hda7/. Also make a swap partition (/dev/hda8). The sizes of these will 
depend on your HD size. You can also obviously choose to split up your file 
system so that not everything is under the root (/). I also named my /dev/hda7/ 
as "debian". Probably makes no difference, but I did notice that the HFS+ 
partition (/dev/hda6) was called "untitled" as was /dev/hda7/ and did not think 
this a good idea.

Once you are happy with how the partitions look, write out the partition table. 
This will destroy the apple driver partition, but don't worry, you can recover 
from this providing you have your OS9 CD. More of this later...

Continue with the installation and install the base system and whatever else 
you want.

Despite being in the "expert" install mode, after install of the base system, 
the installer went straight into trying to install quik as the boot loader 
without giving me the option to avoid this. However, since quik only works with 
ext2 file systems, it bombed out with an error and allowed me to continue. I go 
all the way through to the point where it says the install is finished and 
wants me to remove the install CD and then select reboot. We stop at this point 
and swap to a new console (alt right arrow).

In here we can access the newly installed file system *and* the mac HFS+ 
partition. At the prompt, type "cd /" to make sure you are in the root of the 
file system. On my system, there was a folder at the root called "mnt" that 
contained nothing. I therefore typed in:

mount -t hfsplus /dev/hda7 /mnt

This mounted the mac HFS+ partition under "mnt". You could use another 
directory, since mount just takes over the directory and then will give it back 
when you "umount", but I prefer to use an empty directory just in case.

Now you can cd to mnt and you should see your mac HD.

cd to /target/boot/ and cp whatever is symlinked to vmlinux and initrd (do a 
"ls -l" on the directory to see the details) over the mac HD.

Now "umount /mnt", change back into the installer console (alt left arrow) and 
remove the netinstall CD from the drive. Pop in your OS9 CD, because you will 
need it.

Reboot by selecting that option in the installer.

Your machine will boot into the OS9 installer (even without you holding down 
the "C" key). If you get a flashing disk symbol with a question mark in it, you 
have not got your OS9 CD in the drive. Remember that the partitioning  has 
trashed the mac hard disk driver partition so your mac does not know what to do.

Once the OS9 installer disk has booted and you are at the window where you can 
choose to install OS9, go to the utilities folder and select drive setup. Once 
this has found the drives on your machine, select the one at the top (on mine 
it said "not mounted") and then select from the drop down menu at the top of 
the screen to "update apple hard disk driver". Once you do this, you get a 
message saying you need to reboot. Do this.

Now we can get back into OS9 on the hard drive.

Once in OS9, move the vmlinux kernel you copied above into the kernel images 
folder in your system folder. Put the initrd image anywhere you want.

Select the BootX application.

Select the linux kernel you just moved. Select "use specified ram disk" and 
choose the initrd image you copied above. Now in the additional kernel 
arguments box, enter "root=/dev/hda7" (without the quotes). Obviously your root 
file system might not be hda7, so change that appropriately. Save these 
settings to the defaults. You may want/have to enter other kernel arguments (eg 
for video), but I did not have to.

Now boot into linux.

BootX should hand over to linux and your new install will boot up. At least it 
did for me ;-)

If you upgrade to a new kernel / initrd image, you will need to mount the HFS+ 
drive and copy these over to it so that you can specify these in the BootX app.

Hope this has been of some use to someone.

Best of luck,

Nick.

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