http://zqktlw5bf6oycxq6qod452xnvdfcqhfwliz54bkul736g6b454jrk2ad.onion/wiki/index.php?title=Intrusive_Surveillance&action=edit
Note you can also use files instead of partitions, but it is not recommended, especially if that file resides on a journaled filesystem. After that, the /dev/mapper/cryptfs block device will appear, and you can format it for whatever FS you like, and then mount it.