Linux installation on Apple iBook G4
Based on instructions from:
• http://people.debian.org/~branden/ibook.html 
Download files from http://http.us.debian.org/debian/dists/testing/main/installer‑powerpc/current/images/powerpc/netboot/  (except mini.iso) by alt+clink on filenames and put it in root folder of first HFS+ partition.
My df output follows:
mac:~ apollo$ df
Filesystem              512-blocks     Used    Avail Capacity  Mounted on
/dev/disk0s3              18612224 16109544  2316560    87%    /
devfs                          195      195        0   100%    /dev
fdesc                            2        2        0   100%    /dev
<volfs>                       1024     1024        0   100%    /.vol
/dev/disk0s5              79199360 46155456 33043904    58%    /Volumes/ko3moc
automount -nsl [201]             0        0        0   100%    /Network
automount -fstab [206]           0        0        0   100%    /automount/Servers
automount -static [206]          0        0        0   100%    /automount/static