I have installed Xen on Debian following the official manual from debian.org. After that I runned grub-update and some time later removed Xen, including xen kernel. I runned grub-update one more time, it says
discarding improperly nested partition...
After reboot, system doesn't want to boot:
Loading linux 2.6.26-2-686. Error: cannot read linux header. Loading initial ramdisk... Error: you need to load the kernel first.
initrd and kernel exists in /boot. The filesystems are /boot in /dev/sda1 (ext2) and / in /dev/sda2 (lvm2).
my grub.cfg:
### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
load_env
fi
set default="0"
if [ "${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="${chosen}"
save_env saved_entry
fi
}
function load_video {
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
}
insmod lvm
insmod part_msdos
insmod ext2
set root='(stat.ax-host.ru-root)'
search --no-floppy --fs-uuid --set bf95a21c-f7b6-40dd-92c9-dbebff28250e
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
load_video
insmod gfxterm
fi
terminal_output gfxterm
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 8e5ebc99-a0c3-4f82-b7fe-4878273d709c
set locale_dir=($root)/grub/locale
set lang=en
insmod gettext
set timeout=5
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
set menu_color_normal=cyan/blue
set menu_color_highlight=white/blue
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Debian GNU/Linux, with Linux 2.6.26-2-686' --class debian --class gnu-linux --class gnu --class os {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 8e5ebc99-a0c3-4f82-b7fe-4878273d709c
echo 'Loading Linux 2.6.26-2-686 ...'
linux /vmlinuz-2.6.26-2-686 root=/dev/mapper/stat.ax--host.ru-root ro quiet splash
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.26-2-686
}
menuentry 'Debian GNU/Linux, with Linux 2.6.26-2-686 (recovery mode)' --class debian --class gnu-linux --class gnu --class os {
insmod part_msdos
insmod ext2
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 8e5ebc99-a0c3-4f82-b7fe-4878273d709c
echo 'Loading Linux 2.6.26-2-686 ...'
linux /vmlinuz-2.6.26-2-686 root=/dev/mapper/stat.ax--host.ru-root ro single
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.26-2-686
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/30_os-prober ###
### 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 ###
/etc/grub.d/ 00_header 05_debian_theme 10_linux 30_os-prober 40_custom 41_custom