ubuntu@ubuntu:~$ sudo fdisk -l

Disk /dev/sda: 122.9 GB, 122942324736 bytes
16 heads, 63 sectors/track, 238216 cylinders, total 240121728 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: 0xf96df96d

   Device Boot      Start         End      Blocks   Id  System
/dev/sda1            1071   197508991    98753960+   7  HPFS/NTFS/exFAT
/dev/sda3       197509118   240119807    21305345    5  Extended
/dev/sda5       234620928   240119807     2749440   82  Linux swap / Solaris
/dev/sda6       230430720   234620927     2095104   82  Linux swap / Solaris
/dev/sda7       197509120   226238463    14364672   83  Linux
/dev/sda8       226240512   230428671     2094080   82  Linux swap / Solaris

Partition table entries are not in disk order

Disk /dev/sdb: 4041 MB, 4041211904 bytes
128 heads, 63 sectors/track, 978 cylinders, total 7892992 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: 0x04dd5721

   Device Boot      Start         End      Blocks   Id  System
/dev/sdb1   *          63     7892991     3946464+   b  W95 FAT32
ubuntu@ubuntu:~$ sudo mount /dev/sda7 /mnt
ubuntu@ubuntu:~$ for i in /dev /dev/pts /proc /sys; do sudo mount -B $i /mnt$i; done
ubuntu@ubuntu:~$ sudo chroot /mnt/
root@ubuntu:/# update-grub
Generating grub.cfg ...
Found linux image: /boot/vmlinuz-3.0.0-12-generic
Found initrd image: /boot/initrd.img-3.0.0-12-generic
Found memtest86+ image: /boot/memtest86+.bin
done
root@ubuntu:/# grub-install /dev/sda7
/usr/sbin/grub-setup: warn: Attempting to install GRUB to a partitionless disk or to a partition.  This is a BAD idea..
/usr/sbin/grub-setup: warn: Embedding is not possible.  GRUB can only be installed in this setup by using blocklists.  However, blocklists are UNRELIABLE and their use is discouraged..
/usr/sbin/grub-setup: error: will not proceed with blocklists.
root@ubuntu:/# grub-install /dev/sda
/usr/sbin/grub-setup: warn: Sector 32 is already in use by FlexNet; avoiding it.  This software may cause boot or other problems in future.  Please ask its authors not to store data in the boot track.
Installation finished. No error reported.
root@ubuntu:/# grub-install --recheck /dev/sda
sda   sda1  sda3  sda5  sda6  sda7  sda8
root@ubuntu:/# grub-install --recheck /dev/sda
sda   sda1  sda3  sda5  sda6  sda7  sda8
root@ubuntu:/# grub-install --recheck /dev/sda
/usr/sbin/grub-setup: warn: Sector 32 is already in use by FlexNet; avoiding it.  This software may cause boot or other problems in future.  Please ask its authors not to store data in the boot track.
Installation finished. No error reported.
root@ubuntu:/# exit
ubuntu@ubuntu:~$ for i in /sys /proc /dev/pts /dev; do sudo umount /mnt$i; done
ubuntu@ubuntu:~$ sudo umount /mnt
ubuntu@ubuntu:~$