View Full Version : [ubuntu] modify menu grub2

March 25th, 2010, 03:16 PM

I have in my computer: kubuntu, windows xp and windows 7. The three operative systems are in the same disk.
I boot with Grub2 and I have the option of boot with windows xp, when I select windows xp other menu appears and I can select windows 7 or older version where is windows xp.

I would like that in the principal menu of my grub2 appears the option windows 7 and windows xp without have to enter in the other menu. That is possible? How could I do this?

Many thanks and sorry for my english!

March 25th, 2010, 04:25 PM
It may help if you post some more info. Try this info script

Boot Info Script courtesy of forum member meierfra
Page with instructions and download:
http://bootinfoscript.sourceforge.net/ (http://bootinfoscript.sourceforge.net/)
Be sure to highlight and use code tags (#) to make it easier to read when you post the results.txt.

March 25th, 2010, 07:53 PM
Many thanks,
I attach the file of the result of the script.

March 25th, 2010, 07:56 PM
Maybe the grub2 docs are catching up with the needs....

Best I've found yet:

March 25th, 2010, 09:29 PM
Win 7 wrote its boot loader to the XP partition.

I have adapted the following from




add an entry in/etc/grub.d/40_custom

menuentry "Microsoft Windows 7 (on /dev/sda6)" {
insmod ntfs
set root=(hd0,6)
search --no-floppy --fs-uuid --set 84700C5B700C55F8
chainloader +1
}Step 2 Copy the file bootmgr and the directory Boot from the XP partition to the Win_7 partition

cd /mnt
sudo mkdir 1 6
sudo mount /dev/sda1 1
sudo mount /dev/sda5 5
sudo cp -r 1/bootmgr 1/Boot 5Once you succesfully copied "bootmgr" and "Boot":

Step 3 Edit the bcd on your Win 7 partition.
I don't know what to put here. If you read the post through you may be able to adapt it for your circumstances

March 25th, 2010, 09:55 PM
meierfra, who wrote the boot_info script is one of two or three who can get windows to boot from an extended partition. So the instructions and links in andrewthomas post should work. Your windows 7 is in an extended partition which MS says can only be installed/booted thru a primary partition.

To understand a little more about windows booting - This discusses Vista but 7 is the same for booting.
Multibooters, Pictures here worth 1000+ words