I just downloaded and burned the PowerPC Netinst CD and did an
install with it.
Specifically,
http://cdimage.debian.org/cdimage/daily-builds/sid_d-i/arch-latest/powerpc/iso-cd/debian-testing-powerpc-netinst.iso
Daily build #3 for powerpc, using installer build from sid
This build finished at Fri Aug 17 09:39:24 UTC 2012.
The first problem noted in bug#684265 is still there -- the
installer still does not put the existing root partitions into the
generated yaboot.conf.
When I installed os-prober and ran it on the installed system, it
found and listed the existing root partitions, as expected. So the
problem is in the installer, not os-prober...
Attached is a (hopefully) relevant extract from the installation
syslog file.
Enjoy!
Rick
<syslog.extract>