At very last time of the installation the /dest directory is unmounted and therefore empty.
Please look at the end of installation log to find out what exactly happened. HOWTO: switch to 2nd console by pressing Alt+F2 , type "less -S /var/log/install.log" and scroll down to the end of file.
Hi, the last entry in the install.log is: "Phase End: Install" and on "ALT+F4" the system writes at least: "EXT2 - FS Warning: maximal mount count reached, running e2fsck is recommended"