We use ZEN 6.5 with SP2 and Zim 4.0 with Ztoolkit 4.0

After we have put the image for 5 or 6 times on the same desktop DELL
Optiplex GX280 the machine wil not boot. There is no operatingsystem.
If go and look on the harddisk there's an partion on the beginning of the
disk that is emty or hidden.

How can we prevent this from happening ?

Frank Houweling.