[kde-linux] Grub problems after system update

Bruce Miller subscribe at brmiller.ca
Wed Apr 6 21:26:37 UTC 2011


An update to a newly-installed instance of Kubuntu maverick i386 appeared to 
finish normally but went wrong. It has left the system with a grub.cfg with only 
two "menuentry" listings, both for memtest86+ (see below). Because this is the 
only operating system on the computer, the original installation had set the 
timeout to zero.
 
I have two questions:
1. I believe this merits a bug report. Which package should I file a bug 
against?
2. I would appreciate some advice for recovering the system. I might not have 
framed my Google search very well.
 
The most readily available resuce CD is the original maverick desktop LiveCD. I 
have brought it up and attempted both an update-grub and grub-install, both 
directly from the command line and after mounting /dev/sda1 and issuing a 
chroot. Both efforts failed with an error message "cannot find a device for 
</boot/grub>|</> (is /dev mounted?)
 
Current state of grub.cfg:
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
set default="0"
if [ "${prev_saved_entry}" ]; then
set saved_entry="${prev_saved_entry}"
save_env saved_entry
set prev_saved_entry=
save_env prev_saved_entry
set boot_once=true
fi
function savedefault {
if [ -z "${boot_once}" ]; then
saved_entry="${chosen}"
save_env saved_entry
fi
}
function recordfail {
set recordfail=1
if [ -n "${have_grubenv}" ]; then if [ -z "${boot_once}" ]; then save_env 
recordfail; fi; fi
}
function load_video {
insmod vbe
insmod vga
}
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 58ce6d18-460b-41b8-ad64-8c2f7dec3c2e
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
load_video
insmod gfxterm
fi
terminal_output gfxterm
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 58ce6d18-460b-41b8-ad64-8c2f7dec3c2e
set locale_dir=($root)/boot/grub/locale
set lang=en
insmod gettext
if [ "${recordfail}" = 1 ]; then
set timeout=-1
else
set timeout=10
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 58ce6d18-460b-41b8-ad64-8c2f7dec3c2e
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 58ce6d18-460b-41b8-ad64-8c2f7dec3c2e
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
if [ "x${timeout}" != "x-1" ]; then
if keystatus; then
if keystatus --shift; then
set timeout=-1
else
set timeout=0
fi
else
if sleep --interruptible 3 ; then
set timeout=0
fi
fi
fi
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
### BEGIN /etc/grub.d/41_custom ###
if [ -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
 --
Bruce Miller, Ottawa, Ontario, Canada
bruce at brmiller.ca; (613) 745-1151 


In archaeology you uncover the unknown. In diplomacy you cover the known.
attributed to Thomas Pickering, retired US diplomat, born 1931 



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