Seeing how my hard disk is partitioned

Hi, I have partitioned my primary hard disk a while back. There is a MS partition and an Ubuntu partition. Is there a program/command that shows me how the partitions are organized (order, sizes)?

Thanks!

Hi,

Boot your Linux system and open terminal. Change to root with

su 

command and paste here an output of

fdisk -l

and

mount

commands.

thanks

Lubos