I am playing round with swap space and just created a new machine and purposely left 700Mb free on the hard drive. After the machine starts I cannot find anyway to 'see' this free 700Mb on the disk. df doesn't show it, fdisk doesn't show it. How do I partition this 'phantom' 700Mb as swap? --- (Only playing on a test system) Also... fdisk. Never got my head round it. I have two partitions sda1 and sda2. sda1 was boot and sda2 was lvm. So I deleted sda2 and repartitioned it. Saved the changes, rebooted and then the system failed to boot. How on earth do you repartition a system which is live? (The answer I'm guessing is using LVM) Can you use an LVM portion as swap? Seems yes.