I always use fdisk CLI to create the partitions needed, and mount them in the GUI-app from the installation-process. I never experienced any problems with this. In expert-mode there should be an option to use fdisk, isn't it ?
Steven > Sorry that I can't be more specific, but I always use partition magic to make > any partition.
Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com