Just a small addition: if you are using ntfs partitions under Linux, it would be a good idea to install the package ntfsprogs so that you can run ntfsfix after an unclean shutdown. Otherwise, your partition my only mount read-only. If you don't have ntfsprogs you would have to boot into windows to sort it out.
Run the code:
sudo ntfsfix /dev/xxxx
where xxxx is the device name for the ntfs partition, like sda2