I can't get it right I have a unattended install, but i have already a partitionised harddisk. He's only erase the windows map And i want by selecting the destination drive, that he format that destination drive. All the other partitions he left alone. The only thing i can find on de topics, is a total format. But i lose everything That is not my answer What must i put in the winnt.sif file so that, when i select the destination drive He format that destination drive ( ntfs ) then i get a clean install Please help