>=3B After 'insmod ata'=2C loading of further modules typically fail=
s because 
>=3B the drive in the 'prefix' variable is no longer valid.=

>=3B The following works for me:
>=3B
>=3B # Load needed mo=
dules first
>=3B insmod hdparm
>=3B
>=3B # Switch to ATA dri=
ver and load ATA pass-through support
>=3B # (this invalidates prefix)=

>=3B insmod ata_pthru
>=3B  
>=3B # Turn APM off
>=3B =
hdparm -B 255 (ata0)
>=3B
>=3B -- 
>=3B Regards=2C
>=3B=
 Christian Franke

Thanks Christian :-) that works now. I now underst=
and that the last module
I have to load is ata_pthru That's great. So cu=
rrently I can turn off APM
and got rid of the clunking. Next step is to =
make OSX load.

I'm now using 

insmod hfsplus
set root=3D(h=
d0=2C1)
multiboot /boot

I moved 'insmod hfsplus' *before* 'insmod=
 ata_pthru' and
changed set 'root=3D(hd0=2C1)' to 'set root=3D(ata0=2C1)=
'

Problem seems to be that after loading ata_pthru it
has some pr=
oblems with the prefix and still wants to
/boot in (hd0=2C1)

I ha=
ve also tried 

search --file --set=3Droot /boot
multiboot /boot
Thanks for any help