How do I install Raring in an encrypted disk?
There's no alternate CD and on regular raring CD there is no option to mount the existing encrypted partitions!
I've just done it with the old command line installer mini CD at https://help.ubuntu.com/community/Installation/MinimalCD
In searching for a fix, I notice a bunch of bugs in encrypted installs. Maybe they disabled it rather than take chances. But, they should have mentioned it in the release notes.
BTW, I also tried creating the LVM crypt disk setup before starting the installer. It did see it, but when I tried to boot, I just got the intrmfs prompt. So don't waste your time on it.