Well Markus has totally baffled me with his IBM lingo. Your problem as I see it, is that you do not have retail system 10 installation disk. The gray ones can be machine specific and will not work on other machines. The exception is the eMac installations disks and sometimes the iMac disks. For confirmation on the installation disks that will work for you contact Darlene at Fastmac. Here's what the disks look like and prices for same.http://fastmac.com/osx.php