Hi Adrian, On 2017-10-11, John Paul Adrian Glaubitz <glaub...@physik.fu-berlin.de> wrote: >> Today I downloaded the latest powerpc/sid netinst iso[0] in order to >> revive my iBookG4 (and hopefully help bring PowerPC back to >> Debian/testing). Unfortunately the ISO image (burned to CD) would not >> boot, causing various errors such as "Decrementer exception". Using >> qemu, I can boot the CD medium, so the CD should be fine. Also, if I >> use older yaboot-based ISO images, such as jessie or the openSUSE ISO >> image mentioned (below), I have no problems. Searching around I found >> multiple sites that claim the yaboot version 1.3.17 is to blame. > > No changes were made to the CD generation process in this regard.
This was my first try using yaboot 1.3.17. So that version probably never worked on my iBook. > Before we go start digging into the sources, please make sure your > CD-ROM drive is working properly and the CD you burnt is ok. The CD and drive are fine. The problem is yaboot 1.3.17. Rather than create a new sid netinst iso with an older yaboot, I decided to just use the yaboot 1.3.16 from the latest jessie netinst iso to springboard into the sid installer. In case anyone is interested, the procedure was: 1. download jessie powerpc netinst iso[1] and dd it to a USB stick 2. boot into open firmware 3. start yaboot 1.3.16 from jessie usb stick boot usb0/disk@1:2,\install\yaboot 4. from yaboot 1.3.16, switch to sid netinst (CD-ROM) conf device=cd file=/install/yaboot.conf 5. run installer install32 This allowed me to install sid on my iBook/G4. I'll see if I can bisect where yaboot broke on my iBook. >> 1. Can someone point me to some documentation (or scripts or anything) >> so I can look into building my own powerpc/netinst for sid using an >> older yaboot? I need some way to effectively debug this issue. > > https://parisc.wiki.kernel.org/index.php/How_to_create_Debian_unstable_iso_images Thanks! I'll start getting this setup. I'll document my procedure in case anyone else is interested. John Ogness [0] http://jenkins.kfreebsd.eu/jenkins/view/cd/job/debian-cd_sid_powerpc/ws/build/debian-unofficial-powerpc-NETINST-1.iso [1] https://cdimage.debian.org/cdimage/archive/8.9.0/powerpc/iso-cd/debian-8.9.0-powerpc-netinst.iso
