harddisk inacessible in G4PowerBook

[Bernhard Lang <bernhard@chiphy.unige.ch>]

hello all

I'm a new list member but not at all new to Linux (using a G3PowerBook
with LinuxPPC since 2000). I just bought a new G4 15'' and got stuck
during Linux installation (actually, just after the starting point):

Booting my G4 PowerBook (model 5.2, PPC G4 1.1 1GHz, boot rom 4.71f1) the
harddisk remains invisible to Linux, while the Combo CD-RW/DVD-R is
accessible.

System Profile (OSX 10.3)
ATA-3 Bus: MATSHITA CD-RW CW-8122
ATA-6 Bus: FUJITSU MHT2060AT (=55GB hard disk)

dmesg:

---snip---
Linux version 2.4.18-newpmac (root@voltaire) (gcc version 2.95.4. \
   200110002 (Debian prerelease)) #1 Thu Mar 14 22:44:49 EST 2002

[... a lot ...]

Uniform Multi-Platform E-IDE driver Revision: 6.31
ide: Assuming 33MHz system bus speed for PIO modes; override with idebus=xx
IN from bad port c000 at c00f56ac
IN from bad port c100 at c00f56ac

[... some lines for cn00 n=2,...,e ...]

IN from bad port cf00 at c00f56ac
pmac_ide: enabling IDE bus ID 0
hda: MATSHITACD-RW CW-8122, ATAPI CD/DVD-ROM drive
ide0 at 0xf4194000-0xf4194007,0xf4104160 in irq 24
hda: Enabling MultiWord DMA 2
ide_pmac: MDMA, cycleTime: 120, accessTime: 90, recTime: 30
ide_pmac: Set MDMA timing for mode 2, reg: 0x00011d26
hda: ATAPI 24X DVD-ROM CD-R/RW drive, 2048 Cache, (U)DMA
Uniform CD-ROM driver Revision: 3.12
---snap---

so it looks like that ide_pmac does not detect my harddisk. I've tried
several kernel boot parameters. But as I don't have much experience with
this, I'm not really able to test systematically.

Does anyone have an idea what might be going on, or where I could find
further information?

Thanks in advance
Bernhard