I have read already few threads related to my problem, but no one was sufficient to solve it.
I had windows 7 in my laptop and I decided to install Ubuntu 11.04.
During the installation I split a big partition of 400gb (which only 100gb used by windows) in 2gb swap and 100gb ext4 for ubuntu. However, the 400gb partition that initially was labeled as 'type' 'ntfs', now doesn't have any type and under the field 'Used' there is written 'unknown'.
There was no way to go back to the previous state and I completed the installation. Since that I haven't been able to boot Windows 7 anymore. In the GNU GRUB, besides the Ubuntu lines, I have 2 new options:
Winfows Recovery Environment (loader) (on /dev/sda1)
Windows 7 (loader) (on /dev/sda2)
where the command for booting the second one is:
and if I try to boot it the windows boot manager says: 'Windows failed to start. .... The boot selection failed because a required device is inaccessible'
setparams 'Windows 7 (loader) (on /dev/sda2)'
search --no-floppy --fs-uuid --set=root 9A .... 4B
chainloader + 1
Moreover, if I try to boot Winfows Recovery Environment (loader) (on /dev/sda1) it ends up in Acer eRecovery Management where I can only completely restore system to factory defaults (where all C: drive will be deleted). The other options are not available!!!
The situation of my disk is the following:
Please help me!!! I really need to have windows back without loosing any file, and very soon (I need to finish my thesis).
Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 cylinders, total 976773168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x0748d562
Device Boot Start End Blocks Id System
/dev/sda1 2048 27265023 13631488 27 Unknown
/dev/sda2 * 27265024 27469823 102400 7 HPFS/NTFS
/dev/sda3 27469824 222782323 97656250 83 Linux
/dev/sda4 222783486 976771071 376993793 5 Extended
/dev/sda5 222783488 226689023 1952768 82 Linux swap / Solaris
/dev/sda6 226691072 976771071 375040000 83 Linux
Thank you so much,
ps. Ubuntu is running properly and I will not have my windows cd for the next 3-4 weeks.