Although it's an abundantly treated matter, I'm unable to find an answer valid for my needs. I had a 12.04 installation of ubuntu and I decided to install the 12.10.
I copied (using GParted) the partition where my system was to an external hd where there is a windows partition. Then I installed the newest ubuntu version and now I want to take back some files (for example my .emacs) from that partition but when I try to mount it, it is not found as sdb and if I mount it from /dev/usb/hddev0 I don't get any output, only a blinking cursor, no errors, no output. I even tried to mount it as an ntfs disk but the result was the same. It's like the hd cannot be detected.
So how can I access data to that disk? Could I get them from GParted terminal instead of Ubuntu one?