On Sun, 18 Jun 2006, Chris Tribo wrote:

> Iain Dooley wrote:
>> Hi, i'm trying to boot netbsd 3.0 from a CD created on a FreeBSD 6.0 
>> machine using cdrecord from the file macppccd-3.0.iso that i obtained from 
>> the netbsd ftp site.
>
> That ISO image is probably an ISO/HFS hybrid which will not boot on 
> OpenFirmware before 3.x. You need to copy all the files off of the CD and 
> make a "pure" ISO9660 image following directions here:
>
> http://mail-index.netbsd.org/port-macppc/2005/11/18/0001.html

i did the following:

%mkisofs -A "NetBSD 3.0 macppc unofficial" -N -L -l -o 
macppc_unofficial.iso -P "Unofficial Unsupported" -p "Unofficial 
Unsupported" -R -r -V "NetBSD macppc 3.0 unofficial" macppccd-3.0.iso
mkisofs: The option '-L' is reserved by POSIX.1-2001.
mkisofs: The option '-L' means 'follow all symbolic links'.
mkisofs: Mkisofs-2.02 will introduce POSIX semantics for '-L'.
mkisofs: Use -allow-leading-dots in future to get old mkisofs behavior.
mkisofs: The option '-P' is reserved by POSIX.1-2001.
mkisofs: The option '-P' means 'do not follow symbolic links'.
mkisofs: Mkisofs-2.02 will introduce POSIX semantics for '-P'.
mkisofs: Use -publisher in future to get old mkisofs behavior.
Warning: creating filesystem that does not conform to ISO-9660.

the thing that concerns me is that it specifcally warns me that the cd 
will not conform to ISO-9660, which is the problem in the first place!

> [...]
> 
>> from following instructions on the install page, i have managed to boot 
>> into open firmware, and ascertained that scsi-int/sd@3:0 should be bootable 
>> (using the 'words' command), but when i type:
>> 
>> boot scsi-int/sd@3:0 NETBSD.MACPPC
>
> Assuming the CD-ROM is at SCSI ID 3, you are close, except for you are 
> missing a comma, and you can't boot the kernel directly from the CD. You need 
> to load ofwboot.xcf which in turn loads the kernel.
>
> boot device/address@ID:partition,file
>
> boot scsi-int/sd@3:0,OFWBOOT.XCF is probably what you want.
>
>
>> it says that it cannot open it. also, if i do:
>> 
>> dev scsi-int/sd@3 ok
>> dir
>
> You aren't specifying a partition number, and because it's a hybrid cd, which 
> OF won't understand. At least not with the method we're currently generating 
> CDs with.

this stuff still didn't work, but presumably because the filesystem on the 
cd was not 'pure iso9660'.