Re: Booting off Flash Drive with no Hard Drive
If you have another recent Ubuntu operating system or a even a Live CD you should be able to just plug the flash memory stick in and a dialog should pop up asking you for your encryption password. Normally all you need is your password and Ubuntu should decrypt it and mount it for you. I assume Xubuntu and other 'buntu's would be similar, it has been quite a while now since I last tried out other flavours of Ubuntu so I'm not sure.
In older versions of Ubuntu we needed to run some commands first, you could try them for good measure but I don't think you need them.
sudo apt-get install lvm2 cryptsetup
It should at least show up in the file browser if you open any folder, like your /home folder or Documents or anything and click 'go' and then 'computer', you should see an icon for it there and you should be able to double-click on it for a dialog titled 'Enter a password to unlock the volume'. After entering your password, ignore any message like 'unable to mount location' and take a look in your sidebar for the newly mounted file system. You should able to just go in and rescue your files if all things work normally.
sudo modprobe dm-crypt
If it still fails to mount it's possible that something else is wrong, perhaps it needs to file system check or maybe there's some other kind of problem like a hardware or firmware issue of some kind inside the flash memory stick.
You could try a command like:
That should tell you if the USB is being detected at all.
UBUNTU: the operating system we RUNTU