6.1 Unmounting the Windows Partition
If the steps in the ”Dual Booting Ubuntu with Windows” chapter were followed to mount the Windows partition from within Ubuntu, steps should be taken to unmount the partition before continuing with this chapter. Assuming that the Windows partition was mounted as /mnt/windows, it can be unmounted as follows:
# umount /mnt/windows
The /etc/fstab file should also be edited to remove the /mnt/windows auto-mount if it was previously added.