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I have a Dell Vostro 3360 with 500GB+32GB SSD and I've installed dual boot Windows 7/Ubuntu 12.10. Everything worked fine till I upgraded the kernel version as I noticed that Windows 7 from GRUB menu disappeared.

I've tried several ways and hours to solve it but, I cannot make Windows 7 boot again.

Boot-repair (from Ubunutu or LiveCD) didn't solve the issue as it seems it doesn't see the Windows installation. Here it is the pastebin:

http://paste.ubuntu.com/1669486/

I even added manually the entries using Grub Customizer to boot directly from /sda3, but the error returned is "bootmngr is missing". Using a windows 7 recovery disk, the Startup Recovery option doesn't solve anything. Also, it doesn't see the previous Windows installation. The windows partition is already active (marked as boot) as I tried the solution from other posts.

Restoring MBR using Boot-repair for the first time, I was able to resume Windows (hibernation), but after shutdown I was no more able to boot in Windows. In that case, I think the Intel Rapid Start it was used as it for hibernation. Thus, I'm pretty sure that this technology is messing up the grub and booting as Boot-repair reports:

============================= Boot Info Summary: ===============================

 => Grub2 (v2.00) is installed in the MBR of /dev/sda and looks at sector 1 of 
    the same hard drive for core.img. core.img is at this location and looks 
    in partition 1 for (,msdos5)/boot/grub.
 => Windows 7/8/2012 is installed in the MBR of /dev/sdb.

(sdb is the 32GB SSD).

As a last chance, I've even tried restoring the Dell factory image, but besides wiping my Windows, it didn't help at all.

Right now, I am out of solutions. If somebody has other ideas to try, it will be much appreciated.

Thank you!

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2 Answers 2

Might be you want to try manual edit the grub.cfg while waiting for other professional to answer your question.

Below are my Windows 7 entry in the grub.cfg, I hope that can be a reference for you when editing:

menuentry 'Windows 7 (loader) (on /dev/sda1)' --class windows --class os $menuentry_id_option 'osprober-chain-D4665DF6665DD9B6' {
insmod part_msdos
insmod ntfs
set root='hd0,msdos1'
if [ x$feature_platform_search_hint = xy ]; then
  search --no-floppy --fs-uuid --set=root --hint-bios=hd0,msdos1 --hint-efi=hd0,msdos1 --hint-baremetal=ahci0,msdos1  D4665DF6665DD9B6
else
  search --no-floppy --fs-uuid --set=root D4665DF6665DD9B6
fi
chainloader +1
}
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thanks for the answer, but I've already add manually the menu entry: menuentry "windows 7.3"{ set root='(hd0,3)' search --no-floppy --fs-uuid --set 36ECF4D1ECF48C7D drivemap -s (hd0) ${root} chainloader +1 } Anyway, I'll try to add yours with the necessary updates for sda3. One issue seems to be that grub doesn't see the Windows installation even if I disabled from BIOS the Inter Rapid Start and set AHCI... –  vicxyz Feb 17 '13 at 11:42
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can you mount sda2 or sda3?

sudo mount /dev/sda2

can you see any of the nodes sda2 and sda3 in the /dev directory?

ls /dev/sda*

if not, try:

sudo apt-get install dmraid
dmraid -an
dmraid -si
dmraid -E -r
sudo update-grub

reboot

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Yes, it was just for the pastebin, I ran it several times without effect. Also, update-grub : Generating grub.cfg ... Found linux image: /boot/vmlinuz-3.5.0-23-generic Found initrd image: /boot/initrd.img-3.5.0-23-generic Found linux image: /boot/vmlinuz-3.5.0-17-generic Found initrd image: /boot/initrd.img-3.5.0-17-generic Found memtest86+ image: /boot/memtest86+.bin done –  vicxyz Feb 17 '13 at 14:59
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