При загрузке в списке выбора систем только Windows XP, но в /boot/grub/grub.cfg прописан и linux (всё это прописалось после sudo update-grub):
$ sudo update-grub2
Generating grub.cfg ...
Found background image: tulip.tga
Found linux image: /boot/vmlinuz-2.6.35-22-generic
Found initrd image: /boot/initrd.img-2.6.35-22-generic
Found linux image: /boot/vmlinuz-2.6.35-19-generic
Found initrd image: /boot/initrd.img-2.6.35-19-generic
Found memtest86+ image: /memtest86+.bin
Found Microsoft Windows XP Home Edition RU on /dev/sda1
done
cat /boot/grub/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 "${boot_once}" ]; then save_env recordfail; fi; fi
}
function load_video {
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
}
insmod part_msdos
insmod ext2
set root='(hd1,msdos5)'
search --no-floppy --fs-uuid --set 433b3501-5f92-4270-9e7c-f40df58717f5
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
load_video
insmod gfxterm
fi
terminal_output gfxterm
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set 6aa1a7e2-d68c-4d44-bb4a-60c16d20932a
set locale_dir=($root)/grub/locale
set lang=it
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 ###
insmod part_msdos
insmod ext2
set root='(hd1,msdos5)'
search --no-floppy --fs-uuid --set 433b3501-5f92-4270-9e7c-f40df58717f5
insmod tga
if background_image /usr/share/images/grub/tulip.tga ; then
set color_normal=black/black
set color_highlight=magenta/black
else
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
fi
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Ubuntu, with Linux 2.6.35-22-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set 6aa1a7e2-d68c-4d44-bb4a-60c16d20932a
linux /vmlinuz-2.6.35-22-generic root=UUID=433b3501-5f92-4270-9e7c-f40df58717f5 ro quiet splash
initrd /initrd.img-2.6.35-22-generic
}
menuentry 'Ubuntu, with Linux 2.6.35-22-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set 6aa1a7e2-d68c-4d44-bb4a-60c16d20932a
echo 'Loading Linux 2.6.35-22-generic ...'
linux /vmlinuz-2.6.35-22-generic root=UUID=433b3501-5f92-4270-9e7c-f40df58717f5 ro single
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.35-22-generic
}
menuentry 'Ubuntu, with Linux 2.6.35-19-generic' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set 6aa1a7e2-d68c-4d44-bb4a-60c16d20932a
linux /vmlinuz-2.6.35-19-generic root=UUID=433b3501-5f92-4270-9e7c-f40df58717f5 ro quiet splash
initrd /initrd.img-2.6.35-19-generic
}
menuentry 'Ubuntu, with Linux 2.6.35-19-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os {
recordfail
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set 6aa1a7e2-d68c-4d44-bb4a-60c16d20932a
echo 'Loading Linux 2.6.35-19-generic ...'
linux /vmlinuz-2.6.35-19-generic root=UUID=433b3501-5f92-4270-9e7c-f40df58717f5 ro single
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.35-19-generic
}
### 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='(hd1,msdos1)'
search --no-floppy --fs-uuid --set 6aa1a7e2-d68c-4d44-bb4a-60c16d20932a
linux16 /memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
insmod part_msdos
insmod ext2
set root='(hd1,msdos1)'
search --no-floppy --fs-uuid --set 6aa1a7e2-d68c-4d44-bb4a-60c16d20932a
linux16 /memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Microsoft Windows XP Home Edition RU (on /dev/sda1)" {
insmod part_msdos
insmod ntfs
set root='(hd0,msdos1)'
search --no-floppy --fs-uuid --set 1a80b46980b44d4f
drivemap -s (hd0) ${root}
chainloader +1
}
### 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 ###
Что ж grub2 упорно не хочет загружать сабжевый файл?