I can't install YDL

[yellowdog-general@lists.terrasoftsolutions.com]

Hi,

I can't install YDL 3.0 or Mandrake Linux 9.1 PPC on my Macs (iBook, 
Cube, Dual PowerMac G4).
I can't install directly form CD so I try install via Apple Open 
Firmware.
I start Apple Open Firmware, type "boot cd:\\yaboot" or "boot 
cd:2,\\yaboot" but installation process end with this message :
load-site=0 addler32=1
LOAD-SIZE too small
What's wrong ?
How can I install YDL 3.0 on my Macs ?

Please, help.

Miro.