In terminal, type:

Code:
sudo blkid
If the drives/partitions have names or labels, it should ouptut something like:

/dev/hda2: UUID="dff9fd76-7280-4cae-a449-84f6fd37c5d9" SEC_TYPE="ext2" TYPE="ext3" LABEL="Home"
If no label is specified, use:

Code:
sudo e2label /dev/whatever label
Where /dev/whatever is /dev/sda1, /dev/sda2 or whatever the partition is, and label is the name you wish to give it. sudo is necessary to label the root partition, I believe.

Then remount the partition or reboot.