ubiquity installer crashes during partition and fails to install yaboot

[Herminio]

When I to install MATE along side my current Linux distribution the installer crashes during the partition phase. I see ubiquity at 40% and Xorg at 40% in top.

ProblemType: Bug
DistroRelease: Ubuntu 15.04
Package: ubiquity 2.21.22
ProcVersionSignature: Ubuntu 3.19.0-14.14-powerpc-smp 3.19.3
Uname: Linux 3.19.0-14-powerpc-smp ppc
ApportVersion: 2.17.2-0ubuntu1
Architecture: powerpc
CasperVersion: 1.359
CurrentDesktop: MATE
Date: Tue Apr 21 18:11:33 2015
InstallCmdLine: ro ramdisk_size=1048576 file=/cdrom/preseed/ubuntu-mate.seed boot=casper quiet splash --- radeon.modeset=1 video=offb:off video=1024x768-32 video=radeonfb:off radeon.agpmode=-1
LiveMediaBuild: Ubuntu-MATE 15.04 "Vivid Vervet" - Beta powerpc (20150417.1)
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: ubiquity
UbiquityDebug:
 Ubiquity 2.21.22
 Gtk-Message: Failed to load module "overlay-scrollbar"
 No such schema 'org.gnome.nautilus.desktop'
 update_release_notes_label()
 update_release_notes_label()
UpgradeStatus: No upgrade log present (probably fresh install)

[Ubuntu QA Website (ubuntuqa)]

This bug has been reported on the Ubuntu ISO testing tracker.

A list of all reports related to this bug can be found here:
http://iso.qa.ubuntu.com/qatracker/reports/bugs/1446792

[Brian Murray (brian-murray)]

It looks like there may be an issue with the hard disk or partition located at /dev/sda:

Apr 21 17:50:22 ubuntu-mate kernel: [ 6635.058545] isofs_fill_super: bread failed, dev=sda1, iso_blknum=16, block=32
Apr 21 17:50:22 ubuntu-mate ubiquity: mount:
Apr 21 17:50:22 ubuntu-mate ubiquity: wrong fs type, bad option, bad superblock on /dev/sda1,
Apr 21 17:50:22 ubuntu-mate ubiquity: missing codepage or helper program, or other error
Apr 21 17:50:22 ubuntu-mate ubiquity:
Apr 21 17:50:22 ubuntu-mate ubiquity:
Apr 21 17:50:22 ubuntu-mate ubiquity: In some cases useful info is found in syslog - try
Apr 21 17:50:22 ubuntu-mate ubiquity: dmesg | tail or so.
Apr 21 17:50:22 ubuntu-mate ubiquity: mount:
Apr 21 17:50:22 ubuntu-mate ubiquity: wrong fs type, bad option, bad superblock on /dev/sda3,
Apr 21 17:50:22 ubuntu-mate ubiquity: missing codepage or helper program, or other error
Apr 21 17:50:22 ubuntu-mate ubiquity:
Apr 21 17:50:22 ubuntu-mate ubiquity:
Apr 21 17:50:22 ubuntu-mate ubiquity: In some cases useful info is found in syslog - try
Apr 21 17:50:22 ubuntu-mate ubiquity: dmesg | tail or so.
Apr 21 17:50:22 ubuntu-mate kernel: [ 6635.297833] EXT4-fs (sda4): mounted filesystem with ordered data mode. Opts: (null)
Apr 21 17:50:23 ubuntu-mate kernel: [ 6635.645646] isofs_fill_super: bread failed, dev=sda1, iso_blknum=16, block=32

[Herminio (herminio-hernandezjr)]

I was to install when I chose the erase the entire disk option. However when I did yaboot failed to install and I could not boot into my system.

[Adam Smith (adamsmith)]

The mate isos are currently missing the yaboot package. This is stopping yaboot-installer working and consequently crashing ubiquity.