I had Windows 7 and Ubuntu 12.04 in my machine, and after trying to mount and unmount a SD card, my Windows 7 "has hidden him self", When i power on the computer,i can enter the Grub and choose
Windows 7 (loader) (on /dev/sda1)
but, it says
error: no such device: B6606771606736F1.
error: invalid signature.
How can I recover my Windows 7?
when i do sudo fdisk -l
it appearsthis
Disk /dev/sda: 750.2 GB, 750156374016 bytes
255 heads, 63 sectors/track, 91201 cylinders, total 1465149168 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 4096 bytes
I/O size (minimum/optimal): 4096 bytes / 4096 bytes
Disk identifier: 0xfeff8cfd
Device Boot Start End Blocks Id System
/dev/sda1 * 2048 523655167 261826560 7 HPFS/NTFS/exFAT
/dev/sda2 523655168 1359239167 417792000 7 HPFS/NTFS/exFAT
/dev/sda3 1359241214 1465147391 52953089 5 Extended
Partition 3 does not start on physical sector boundary.
/dev/sda5 1359241216 1448818687 44788736 83 Linux
/dev/sda6 1448820736 1465147391 8163328 82 Linux swap / Solaris
Disk /dev/sdb: 24.0 GB, 24015495168 bytes
255 heads, 63 sectors/track, 2919 cylinders, total 46905264 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: 0x74f02dea
Device Boot Start End Blocks Id System
/dev/sdb1 * 2048 46901247 23449600 7 HPFS/NTFS/exFAT
Help please...
boot-repair
tool.ls -l /dev/disk/by-uuid/
?