Sources http://forum.ubuntu.ru/index.php?topic=116435.0
You might have a trouble with your home partition unabled to be found when another hard drive being attached to your system. The problem can be solved by pointing partitions ids in /etc/fstab. At first get some information about your drives:
cat /etc/fstab sudo fdisk -l sudo blkid
Now make appropriate changes to /etc/fstab:
sudo gedit /etc/fstab
It will look like:
UUID=cc96b3f8-657d-4be3-bb58-61e57554bbd1 / ext4 errors=remount-ro 0 1 # /home was on /dev/sda6 during installation UUID=3a3b37dc-61d0-4d30-88b4-dba06f9252cd /home ext4 defaults 0 2 # /media/asutp was on /dev/sda7 during installation UUID=363d7f28-0ec9-4f1c-bf93-f366a1f96b5e /media/asutp ext4 defaults 0 2 # swap was on /dev/sda5 during installation UUID=050e35b8-bf87-49b0-9114-9aa6dd7e65a4 none swap sw 0 0