Now comes the tricky part, for whatever reason you are able to mount the first iso and get the installation file of there but running it will not give you a go, at least that is you get no desktop item. So u can't kick of the installation. Furthermore running it will complain not being to unzip a compressed image.
So i did it the following way: because the installer consists out of a script and a compressed image I used vim to take the script part out and save it in a new file. I used one of the standard tools to unzip the compressed image. For my script and the other necessary files see the download link.
http://www.gigasize.com/get.php?d=msb28nkr1wbunpack into mceinstaller dir in root, cd to the directory and execute han.sh "./han.sh"