Can't find hard disk on ibook G4 when use Yaboot as a Temporary Bootloader

[Klarke Lee <klarke@gmail.com>]

Hi, everybody,

I want to install debian on my ibook G4.
(Hardware: ibook G4, 512M DDR-RAM, 30G Fujitsu-MHT2030AT,
                CD:@f2000000, ATA-3
                HD:@f4000000, ATA-6)

So, I followed en Français's popular instruction -- "Installing Debian
3.0 onto an Apple iBook", I chosed Debain + MacOsX solution.
yaboot from: http://http.us.debian.org/debian/dists/woody/main/disks-powerpc/current/new-powermac/(version:
1.3.6 seems old)
yaboot.conf: 
image=/linux.bin
	label=install
	initrd=/root.bin
	initrd-size=8192
	append="disksize=2.88"

image=/linux.bin
	label=install-safe
	initrd=/root.bin
	initrd-size=8192
	append="disksize=2.88 video=ofonly"

put them(linux.bin, boot, yaboot.conf, root.bin) on the HD's first
partition(named debian).
(My HD's partition table under MacOsX:
    /dev/disk0s3:  /volume/debian      "MacOS Extended" (HFS+)    
    /dev/disk0s5:  /                           "MacOS Extended" (HFS+)  )

enter Openfirmware
o> boot hd:3,yaboot

got the warning message: first boot partition is: "Apple_HFS"
                                       should be: "Apple_Bootstrap"

then got the boot prompt:

boot:>
 
whatever I chose "install" or "install-safe"

Yaboot could boot my ibook without load hard disk.
instead, the system recognise the CD-ROM as /dev/hda

Could anybody help me?
Sincerely thanks to you all.

BTW: I have try CD:"debian-30r2-powerpc-binary-1"
o>boot cd:,\install\powermac\yaboot
boot:>install24-safe
also can boot system. but got the same problem(Can't find hard disk).

with my best regards,
klarke