HyperFlexed
April 9th, 2010, 04:04 AM
Hi all, spent most of today tweaking out my gentoo kernel. Now I'm having trouble getting GRUB2 to pick it up in the boot menu.
to clarify: Does every OS need a copy of grub? My impression was that you have one copy, and it takes care of all the OSes you have. I got to the point in my Gentoo install where it asked me to install grub, but I didn't want to mess up my boot record or anything (which there is the potential for as I'm in unfamiliar territory).
I switched over to ubuntu and tried
johnny@johnny-desktop:~$ sudo apt-get install --reinstall libdebian-installer4
... apt-get succeeds ...
johnny@johnny-desktop:~$ sudo os-prober
/dev/sda1:Microsoft Windows XP Professional:Windows:chain
/dev/sda13:Gentoo Base System release 1.12.13:Gentoo:linux
johnny@johnny-desktop:~$ sudo update-grub
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-2.6.31-20-generic
Found initrd image: /boot/initrd.img-2.6.31-20-generic
Found linux image: /boot/vmlinuz-2.6.31-14-generic
Found initrd image: /boot/initrd.img-2.6.31-14-generic
Found memtest86+ image: /boot/memtest86+.bin
Found Microsoft Windows XP Professional on /dev/sda1
Found Gentoo Base System release 1.12.13 on /dev/sda13
done
johnny@johnny-desktop:~$
however, if I try
johnny@johnny-desktop:~$ cat /boot/grub/grub.cfg
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by /usr/sbin/grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s /boot/grub/grubenv ]; then
have_grubenv=true
load_env
fi
set default="0"
if [ ${prev_saved_entry} ]; then
saved_entry=${prev_saved_entry}
save_env saved_entry
prev_saved_entry=
save_env prev_saved_entry
fi
insmod ext2
set root=(hd0,8)
search --no-floppy --fs-uuid --set fd622506-b133-4f57-8c42-e6ff8d10b832
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
insmod gfxterm
insmod vbe
if terminal_output gfxterm ; then true ; else
# For backward compatibility with versions of terminal.mod that don't
# understand terminal_output
terminal gfxterm
fi
fi
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/white
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
menuentry "Ubuntu, Linux 2.6.31-20-generic" {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
set quiet=1
insmod ext2
set root=(hd0,8)
search --no-floppy --fs-uuid --set fd622506-b133-4f57-8c42-e6ff8d10b832
linux /boot/vmlinuz-2.6.31-20-generic root=UUID=fd622506-b133-4f57-8c42-e6ff8d10b832 ro quiet splash
initrd /boot/initrd.img-2.6.31-20-generic
}
menuentry "Ubuntu, Linux 2.6.31-20-generic (recovery mode)" {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
insmod ext2
set root=(hd0,8)
search --no-floppy --fs-uuid --set fd622506-b133-4f57-8c42-e6ff8d10b832
linux /boot/vmlinuz-2.6.31-20-generic root=UUID=fd622506-b133-4f57-8c42-e6ff8d10b832 ro single
initrd /boot/initrd.img-2.6.31-20-generic
}
menuentry "Ubuntu, Linux 2.6.31-14-generic" {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
set quiet=1
insmod ext2
set root=(hd0,8)
search --no-floppy --fs-uuid --set fd622506-b133-4f57-8c42-e6ff8d10b832
linux /boot/vmlinuz-2.6.31-14-generic root=UUID=fd622506-b133-4f57-8c42-e6ff8d10b832 ro quiet splash
initrd /boot/initrd.img-2.6.31-14-generic
}
menuentry "Ubuntu, Linux 2.6.31-14-generic (recovery mode)" {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
insmod ext2
set root=(hd0,8)
search --no-floppy --fs-uuid --set fd622506-b133-4f57-8c42-e6ff8d10b832
linux /boot/vmlinuz-2.6.31-14-generic root=UUID=fd622506-b133-4f57-8c42-e6ff8d10b832 ro single
initrd /boot/initrd.img-2.6.31-14-generic
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Microsoft Windows XP Professional (on /dev/sda1)" {
insmod ntfs
set root=(hd0,1)
search --no-floppy --fs-uuid --set 26bceeacbcee75a9
drivemap -s (hd0) ${root}
chainloader +1
}
### END /etc/grub.d/30_os-prober ###
### BEGIN /etc/grub.d/40_custom ###
# This file provides an easy way to add custom menu entries. Simply type the
# menu entries you want to add after this comment. Be careful not to change
# the 'exec tail' line above.
### END /etc/grub.d/40_custom ###
I see that gentoo is nowhere to be found. I'm sure this is very simple, and that I just have no idea what I'm doing. Any help would be greatly appreciated. :D
I can hardly wait to emerge my window manager and start experiencing the supposed glory of Gentoo.
to clarify: Does every OS need a copy of grub? My impression was that you have one copy, and it takes care of all the OSes you have. I got to the point in my Gentoo install where it asked me to install grub, but I didn't want to mess up my boot record or anything (which there is the potential for as I'm in unfamiliar territory).
I switched over to ubuntu and tried
johnny@johnny-desktop:~$ sudo apt-get install --reinstall libdebian-installer4
... apt-get succeeds ...
johnny@johnny-desktop:~$ sudo os-prober
/dev/sda1:Microsoft Windows XP Professional:Windows:chain
/dev/sda13:Gentoo Base System release 1.12.13:Gentoo:linux
johnny@johnny-desktop:~$ sudo update-grub
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-2.6.31-20-generic
Found initrd image: /boot/initrd.img-2.6.31-20-generic
Found linux image: /boot/vmlinuz-2.6.31-14-generic
Found initrd image: /boot/initrd.img-2.6.31-14-generic
Found memtest86+ image: /boot/memtest86+.bin
Found Microsoft Windows XP Professional on /dev/sda1
Found Gentoo Base System release 1.12.13 on /dev/sda13
done
johnny@johnny-desktop:~$
however, if I try
johnny@johnny-desktop:~$ cat /boot/grub/grub.cfg
#
# DO NOT EDIT THIS FILE
#
# It is automatically generated by /usr/sbin/grub-mkconfig using templates
# from /etc/grub.d and settings from /etc/default/grub
#
### BEGIN /etc/grub.d/00_header ###
if [ -s /boot/grub/grubenv ]; then
have_grubenv=true
load_env
fi
set default="0"
if [ ${prev_saved_entry} ]; then
saved_entry=${prev_saved_entry}
save_env saved_entry
prev_saved_entry=
save_env prev_saved_entry
fi
insmod ext2
set root=(hd0,8)
search --no-floppy --fs-uuid --set fd622506-b133-4f57-8c42-e6ff8d10b832
if loadfont /usr/share/grub/unicode.pf2 ; then
set gfxmode=640x480
insmod gfxterm
insmod vbe
if terminal_output gfxterm ; then true ; else
# For backward compatibility with versions of terminal.mod that don't
# understand terminal_output
terminal gfxterm
fi
fi
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/white
### END /etc/grub.d/05_debian_theme ###
### BEGIN /etc/grub.d/10_linux ###
menuentry "Ubuntu, Linux 2.6.31-20-generic" {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
set quiet=1
insmod ext2
set root=(hd0,8)
search --no-floppy --fs-uuid --set fd622506-b133-4f57-8c42-e6ff8d10b832
linux /boot/vmlinuz-2.6.31-20-generic root=UUID=fd622506-b133-4f57-8c42-e6ff8d10b832 ro quiet splash
initrd /boot/initrd.img-2.6.31-20-generic
}
menuentry "Ubuntu, Linux 2.6.31-20-generic (recovery mode)" {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
insmod ext2
set root=(hd0,8)
search --no-floppy --fs-uuid --set fd622506-b133-4f57-8c42-e6ff8d10b832
linux /boot/vmlinuz-2.6.31-20-generic root=UUID=fd622506-b133-4f57-8c42-e6ff8d10b832 ro single
initrd /boot/initrd.img-2.6.31-20-generic
}
menuentry "Ubuntu, Linux 2.6.31-14-generic" {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
set quiet=1
insmod ext2
set root=(hd0,8)
search --no-floppy --fs-uuid --set fd622506-b133-4f57-8c42-e6ff8d10b832
linux /boot/vmlinuz-2.6.31-14-generic root=UUID=fd622506-b133-4f57-8c42-e6ff8d10b832 ro quiet splash
initrd /boot/initrd.img-2.6.31-14-generic
}
menuentry "Ubuntu, Linux 2.6.31-14-generic (recovery mode)" {
recordfail=1
if [ -n ${have_grubenv} ]; then save_env recordfail; fi
insmod ext2
set root=(hd0,8)
search --no-floppy --fs-uuid --set fd622506-b133-4f57-8c42-e6ff8d10b832
linux /boot/vmlinuz-2.6.31-14-generic root=UUID=fd622506-b133-4f57-8c42-e6ff8d10b832 ro single
initrd /boot/initrd.img-2.6.31-14-generic
}
### END /etc/grub.d/10_linux ###
### BEGIN /etc/grub.d/20_memtest86+ ###
menuentry "Memory test (memtest86+)" {
linux16 /boot/memtest86+.bin
}
menuentry "Memory test (memtest86+, serial console 115200)" {
linux16 /boot/memtest86+.bin console=ttyS0,115200n8
}
### END /etc/grub.d/20_memtest86+ ###
### BEGIN /etc/grub.d/30_os-prober ###
menuentry "Microsoft Windows XP Professional (on /dev/sda1)" {
insmod ntfs
set root=(hd0,1)
search --no-floppy --fs-uuid --set 26bceeacbcee75a9
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 ###
I see that gentoo is nowhere to be found. I'm sure this is very simple, and that I just have no idea what I'm doing. Any help would be greatly appreciated. :D
I can hardly wait to emerge my window manager and start experiencing the supposed glory of Gentoo.