I've installed Ubuntu 12.10 from PXE, using the linux & initrd.gz files and I'd like to update it to Ubuntu Desktop (with unity, the shopping len and everything in between). I've heard that I can do it by installing the 'ubuntu-deskop' meta package, however I wonder if anyone has actually done it and if that's enough to get an identical Ubuntu installation as if I had installed it with the LiveDvd. Thanks in advance.