root@bt:~# fdisk -l

Disk /dev/sda: 500.1 GB, 500107862016 bytes
255 heads, 63 sectors/track, 60801 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: 0xc79359f9

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1   *           1          13      104391    7  HPFS/NTFS
/dev/sda2              63       30387   243572545+   7  HPFS/NTFS
/dev/sda3           43709       55728    96548583    7  HPFS/NTFS
/dev/sda4           30387       43708   107003905    5  Extended
/dev/sda5           30387       43161   102609920   83  Linux
/dev/sda6           43161       43708     4392960   82  Linux swap / Solaris

Partition table entries are not in disk order










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root@bt:~# update-grub
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-2.6.39.4
Found initrd image: /boot/initrd.img-2.6.39.4
Found memtest86+ image: /boot/memtest86+.bin
Found Windows 7 (loader) on /dev/sda1
done