This tutorial presents a step-by-step guide on how to configure full disk encryption manually on Ubuntu 13.10 and Linux Mint 16. It will also work for any other Ubuntu-based distribution, like Linux Deepin.
The point of setting up encrypted partitions manually is so that you can create more than the two default partitions (root and swap) created by Ubiquity, Ubuntu’s graphical installation program, when the automated disk partitioning mode is used and the LVM and disk encryption options are selected. And also to be able to do that when attempting to set up a dual-boot system between, say, Ubuntu or Linux Mint and Windows 7 or Windows 8. The automated partitioning mode does allow using LVM and disk encryption when setting up a dual-boot system.