So I found a solution to create a primary partition when using windows 2003 sp1 as a source for the PE Iso. I simply changed the diskpart.exe before creating the iso file. I used the diskpart.exe from windows server 2003 without sp1... So far so good but there is the next problem... After I created the partition with diskpart I want to format this **** partition...once again there is no go. I am not able to format the created partition. I also changed format.com as I did with diskpart.exe but in this case this didn´t work. The error is "unkown file system". If I use A43 File Management Utility and look at the properties of my created partition the file system is RAW. At the creation with diskpart I enterd to use NTFS as file system. So maybe changing the diskpart.exe resulted in this error or something with the format command in the PE Environment is wrong when using Windows 2003 SP1 as source for the iso. Any ideas? Schechi