I can update yaboot from wheezy to sid without any issue. $ cat /etc/yaboot.conf ## yaboot.conf generated by debian-installer ## ## run: "man yaboot.conf" for details. Do not make changes until you have!! ## see also: /usr/share/doc/yaboot/examples for example configurations. ## ## For a dual-boot menu, add one or more of: ## bsd=/dev/hdaX, macos=/dev/hdaY, macosx=/dev/hdaZ
boot="/dev/disk/by-id/ata-WDC_WD800BEVE-00A0HT0_WD-WXR1EB0SNY82-part2" device=/pci@f4000000/ata-6@d/@0 partition=3 root="UUID=67bd7a8f-23f7-4d32-867a-d2baa6b74edf" timeout=50 install=/usr/lib/yaboot/yaboot magicboot=/usr/lib/yaboot/ofboot enablecdboot image=/boot/vmlinux label=Linux read-only initrd=/boot/initrd.img image=/boot/vmlinux.old label=old read-only initrd=/boot/initrd.img.old $ ls -al /dev/disk/by-id/ata-WDC_WD800BEVE-00A0HT0_WD-WXR1EB0SNY82-part2 lrwxrwxrwx 1 root root 10 May 29 14:50 /dev/disk/by-id/ata-WDC_WD800BEVE-00A0HT0_WD-WXR1EB0SNY82-part2 -> ../../sda2 $ uname -a Linux debian 3.16.0-4-powerpc #1 Debian 3.16.7-ckt25-2 (2016-04-08) ppc GNU/Linux