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I duel boot Ubuntu 14.04 and Windows 7 (Windows being installed first) and a couple days ago I jumped on to Ubuntu to check for updates and after it updated, I found that the Windows option had disappeared from the Grub menu.

I have been searching around for way to fix this problem, but none of them seem to work.

I have tried

sudo update-grub

and get this

Generating grub configuration file ...
Found linux image: /boot/vmlinuz-3.13.0-37-generic  
Found initrd image: /boot/initrd.img-3.13.0-37-generic
Found linux image: /boot/vmlinuz-3.13.0-35-generic     
Found initrd image: /boot/initrd.img-3.13.0-35-generic
Found linux image: /boot/vmlinuz-3.11.0-26-generic
Found initrd image: /boot/initrd.img-3.11.0-26-generic     
Found memtest86+ image: /boot/memtest86+.elf     
Found memtest86+ image: /boot/memtest86+.bin     
done

It doesn't have windows in the line up, but when I do

fgrep menuentry /boot/grub/grub.cfg

I get

if [ x"${feature_menuentry_id}" = xy ]; then     
menuentry_id_option="--id"    
menuentry_id_option=""     
export menuentry_id_option     
menuentry 'Ubuntu' --class ubuntu --class gnu-linux --class gnu --class os     
$menuentry_id_option 'gnulinux-simple-6094ed1b-2cb2-4c43-b57c-2809c008ed9c' {     
submenu 'Advanced options for Ubuntu' $menuentry_id_option 'gnulinux-advanced-6094ed1b-2cb2-4c43-b57c-2809c008ed9c' {     
        menuentry 'Ubuntu, with Linux 3.13.0-37-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-37-generic-advanced-6094ed1b-2cb2-4c43-b57c-2809c008ed9c' {     
        menuentry 'Ubuntu, with Linux 3.13.0-37-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-37-generic-recovery-6094ed1b-2cb2-4c43-b57c-2809c008ed9c' {     
        menuentry 'Ubuntu, with Linux 3.13.0-35-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-35-generic-advanced-6094ed1b-2cb2-4c43-b57c-2809c008ed9c' {     
        menuentry 'Ubuntu, with Linux 3.13.0-35-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.13.0-35-generic-recovery-6094ed1b-2cb2-4c43-b57c-2809c008ed9c' {     
        menuentry 'Ubuntu, with Linux 3.11.0-26-generic' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.11.0-26-generic-advanced-6094ed1b-2cb2-4c43-b57c-2809c008ed9c' {     
        menuentry 'Ubuntu, with Linux 3.11.0-26-generic (recovery mode)' --class ubuntu --class gnu-linux --class gnu --class os $menuentry_id_option 'gnulinux-3.11.0-26-generic-recovery-6094ed1b-2cb2-4c43-b57c-2809c008ed9c' {     
menuentry 'Memory test (memtest86+)' {     
menuentry 'Memory test (memtest86+, serial console 115200)' {     
menuentry 'Windows 7' {

I see that Windows 7 is there, but it seems like there should be more after it's name, like a location.

I've even tried Boot-repair, but when I run it, it only has one button that saves a log of my boot stuff to a link (http://paste.ubuntu.com/8580395/)

I moved the Windows 7 boot to the top of the Grub menu with "Grub Customizer" and when I went to my Grub menu Windows 7 was there, but when I clicked it is read "Error: No Such Partition"

I'm not that versed in really technical computer stuff, but I know enough to follow your directions. I hope someone can provide a answer that fixes my issue, and that I have provided enough information.

0xAffe
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Krowzer
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  • Based on your boot info summary, it looks like your Windows 7 partition may be on /dev/sda2 if so running the command sudo os-prober should result in output like /dev/sda2:Windows 7 (loader):Windows:chain – Elder Geek Oct 17 '14 at 21:01
  • Related: Possible duplicate http://askubuntu.com/questions/22629/add-windows-7-to-boot-menu?rq=1 – Elder Geek Oct 17 '14 at 21:03
  • "sudo os-prober"

    It didn't show anything.

    $ sudo os-prober

    $

     – Krowzer Oct 17 '14 at 21:10
  • It looks like the boot flag is missing from your NTFS partition on /dev/sda2. Can you confirm your Windows installation is there if you mount it with Disks – Elder Geek Oct 17 '14 at 21:18
  • Should be, that's the partition I made for windows, so yeah. – Krowzer Oct 17 '14 at 21:19
  • If your Windows bootrec is still in place you may be able to resolve the problem by toggling the boot flag back on using gparted and then repeating the sudo update-grub... back later – Elder Geek Oct 17 '14 at 21:22

1 Answers1

0

Get the latest release of the boot-repair cd here and burn it to disk, boot off of it and then follow the instructions here.

Recommended Repair will usually do the trick. I've rarely had to use the advanced options.

Further information is available on this page.

Elder Geek
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