Ola,
estou procurando resolver esse problema do grub tambem e encontrei este post com o meu caso: no comando sudo fdisk -l a saida e essa:
Disk /dev/sda: 320.1 GB, 320072933376 bytes
255 heads, 63 sectors/track, 38913 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0x6534653a
Device Boot Start End Blocks Id System
/dev/sda1 * 1 26 204800 7 HPFS/NTFS
Partition 1 does not end on cylinder boundary.
/dev/sda2 26 12197 97762712+ 7 HPFS/NTFS
/dev/sda3 12197 36988 199130625 f W95 Ext'd (LBA)
Partition 3 does not end on cylinder boundary.
/dev/sda4 36988 38914 15471448 12 Compaq diagnostics
/dev/sda5 33203 36988 30404608 7 HPFS/NTFS
Disk /dev/sdb: 16.2 GB, 16231956480 bytes
256 heads, 54 sectors/track, 2293 cylinders
Units = cylinders of 13824 * 512 = 7077888 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 512 bytes / 512 bytes
Disk identifier: 0xc3072e18
Device Boot Start End Blocks Id System
/dev/sdb1 * 1 2294 15851504 c W95 FAT32 (LBA)
E no Gparted aparece:
http://imageshack.us/photo/my-images/541/uhn6.png/Eu precisei reiniciar o windows 7 no modo de fabrica e depois disso o grub foi apagado. tentei os procedimentos:
http://ubuntuforum-br.org/index.php/topic,106364.0.htmlhttp://ubuntuforum-br.org/index.php/topic,106364.0.htmle este em particular
http://ubuntuforum-br.org/index.php/topic,14614.0.htmlmas o principal e saber em qual particao o linux esta instalado, mas nao tem ou nao sei qual e a particao.