Originally Posted by
bogan
Hi!, Cavsfan,
I should, perhaps, have mentioned that I have, for safety's sake, conducted what I regard as an experiment, in the 12.10 installation in a SanDisk USB, which has its own Grub active when booted to USB from the Bios boot menu.
Of course, when the USB 12.10 is booted from the grub menu of my primary OS, sda10, the USB Grub menu also appears.
I did not see that this matters - and still do not see how it should make any difference - but clearly it does, because........
I have copy/pasted the 06_custom file from the USB, unchanged, to /etc/grub.d of sd10 and, Lo & Behold !!, all the entries work.
The only queer thing is that the Recovery entries boot directly to a root prompt without displaying a Recovery menu.
So the question is: WHY?? and, What alterations are needed to get the USB Ubuntu to recognise the partitions in sda, and find the vmlinuz & initrd.img files? - which are there in /boot/ of the USB, as well as all the other OS's.
Chao!, bogan.
I thought that maybe you had grub on the USB drive and maybe that would not work and I do not expect that it will work.
Did you install grub on sd10 sudo grub-install /dev/sd10 ?
For this to work, you have to have grub installed along with the picture and everything else on the same partition.
The Wiki assumes that you have untouched grub files and that you copy and paste exactly as stated in the wiki.
Then when you enter sudo update-grub it changes the files a bit as you see them. Like when you look at 06_custom; it is no longer like it says in the wiki because Grub2 has changed it.
My Quantal install is somewhat finicky when I boot into recovery mode also. A lot of times it just hangs and I have to press the reset button.
I have had to boot up a couple of times to get it to work correctly. Not really sure when the last time I got into Quantal Recovery but, it should work.
On Lucid and Precise Recover work no problem - just Quantal doesn't always work.
I am not real fond of Quantal but, I keep it for the Grub2 version 2.00 and to support it for the wiki.
Here is my entire output of sudo grub-mkconfig on Quantal:
Code:
cavsfan@cavsfan-MS-7529:~$ sudo grub-mkconfig
[sudo] password for cavsfan:
Generating 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 $prefix/grubenv ]; then
set have_grubenv=true
load_env
fi
set default="12"
if [ x"${feature_menuentry_id}" = xy ]; then
menuentry_id_option="--id"
else
menuentry_id_option=""
fi
export menuentry_id_option
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 {
if [ x$feature_all_video_module = xy ]; then
insmod all_video
else
insmod efi_gop
insmod efi_uga
insmod ieee1275_fb
insmod vbe
insmod vga
insmod video_bochs
insmod video_cirrus
fi
}
insmod part_msdos
insmod ext2
set root='hd0,msdos7'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos7 --hint-efi=hd0,msdos7 --hint-baremetal=ahci0,msdos7 b5fc902c-0bf0-45b3-95a1-29f3c46dfe6a
else
search --no-floppy --fs-uuid --set=root b5fc902c-0bf0-45b3-95a1-29f3c46dfe6a
fi
if loadfont /boot/grub/DejaVuSansMono.pf2 ; then
set gfxmode=1920x1200-24
load_video
insmod gfxterm
set locale_dir=$prefix/locale
set lang=en_US
insmod gettext
fi
terminal_output gfxterm
if [ "${recordfail}" = 1 ]; then
set timeout=-1
else
set timeout=60
fi
### END /etc/grub.d/00_header ###
### BEGIN /etc/grub.d/05_debian_theme ###
insmod part_msdos
insmod ext2
set root='hd0,msdos7'
if [ x$feature_platform_search_hint = xy ]; then
search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos7 --hint-efi=hd0,msdos7 --hint-baremetal=ahci0,msdos7 b5fc902c-0bf0-45b3-95a1-29f3c46dfe6a
else
search --no-floppy --fs-uuid --set=root b5fc902c-0bf0-45b3-95a1-29f3c46dfe6a
fi
Found background image: nature-hd-wallpaper_1920x1200.jpg
insmod jpeg
if background_image /boot/grub/nature-hd-wallpaper_1920x1200.jpg; then
set color_normal=cyan/black
set color_highlight=light-red/black
true
else
set menu_color_normal=white/black
set menu_color_highlight=black/light-gray
if background_color 44,0,30; then
clear
fi
fi
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/06_custom ###
Adding Ubuntu Lucid Lynx 10.04, Precise Pangolin 12.04, Quantal Quetzal 12.10 and Windows 7
# 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.
menuentry "Lycid Lynx 10.04" {
set root=(hd0,2)
linux /vmlinuz root=/dev/sda2 ro quiet splash
initrd /initrd.img
}
menuentry "Lycid Lynx 10.04 (Recovery Mode)" {
set root=(hd0,2)
linux /vmlinuz root=/dev/sda2 ro single
initrd /initrd.img
}
menuentry "Lycid Lynx Generic 10.04" {
set root=(hd0,9)
linux /vmlinuz root=/dev/sda9 ro quiet splash
initrd /initrd.img
}
menuentry "Lycid Lynx Generic 10.04 (Recovery Mode)" {
set root=(hd0,9)
linux /vmlinuz root=/dev/sda9 ro single
initrd /initrd.img
}
menuentry "Precise Pangolin 12.04" {
set root=(hd0,5)
linux /vmlinuz root=/dev/sda5 ro quiet splash
initrd /initrd.img
}
menuentry "Precise Pangolin 12.04 (Recovery Mode)" {
set root=(hd0,5)
linux /vmlinuz root=/dev/sda5 ro single
initrd /initrd.img
}
menuentry "Precise Pangolin Generic 12.04" {
set root=(hd0,11)
linux /vmlinuz root=/dev/sda11 ro quiet splash
initrd /initrd.img
}
menuentry "Precise Pangolin Generic 12.04 (Recovery Mode)" {
set root=(hd0,11)
linux /vmlinuz root=/dev/sda11 ro single
initrd /initrd.img
}
menuentry "Quantal Quetzal 12.10" {
set root=(hd0,7)
linux /vmlinuz root=/dev/sda7 ro quiet splash
initrd /initrd.img
}
menuentry "Quantal Quetzal 12.10 (Recovery Mode)" {
set root=(hd0,7)
linux /vmlinuz root=/dev/sda7 ro single
initrd /initrd.img
}
menuentry "Quantal Quetzal Generic 12.10" {
set root=(hd0,13)
linux /vmlinuz root=/dev/sda13 ro quiet splash
initrd /initrd.img
}
menuentry "Quantal Quetzal Generic 12.10 (Recovery Mode)" {
set root=(hd0,13)
linux /vmlinuz root=/dev/sda13 ro single
initrd /initrd.img
}
menuentry "Windows 7" {
insmod ntfs
set root='(hd0,1)'
search --no-floppy --fs-uuid --set 1CFC7A8DFC7A60C6
chainloader +1
}
### END /etc/grub.d/06_custom ###
### BEGIN /etc/grub.d/20_linux_xen ###
### END /etc/grub.d/20_linux_xen ###
### BEGIN /etc/grub.d/30_uefi-firmware ###
### END /etc/grub.d/30_uefi-firmware ###
### 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 ${config_directory}/custom.cfg ]; then
source ${config_directory}/custom.cfg
elif [ -z "${config_directory}" -a -f $prefix/custom.cfg ]; then
source $prefix/custom.cfg;
fi
### END /etc/grub.d/41_custom ###
As you can see that does not resemble my 06_custom file at all.
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