ok I made another ISO file using the same XPCD without the repartition line and it had the chk dsk problem. I dont know how some of those files may have gotten corrupted, antivirus hasnt picked anything up, but that seemed to be it. So Im deleting the folder and crating a new XPCD folder and going to copy over the files from the original instal CD, hope that solves it. thanks for your help