When drives don't mount nicely

While rebuilding my media sharing Raspberry Pi I've come across a small problem with usb drives. If you don't unmount a drive from a Windows machine properly, the Pi will mount it read-only. A simple solution for this is:

1. install the ntfs-3g package:

   sudo apt-get install ntfs-3g

2. mount the drive using this utility:

   sudo ntfs-3g /dev/sda1 media

   (to mount drive at sda1 to directory media) which clears up all the locks for you
3. then simply umount and mount and things are back to normal