You don't know Disk management in Windows?
Don't know if Gparted can convert safely logical Windows partition in to primary partition as ntfs is quite bad documented and patented stuff but you can delete it with Gparted and create primary partition with it without problems or you can resize ntfs or fat32 partition with Gparted (at least on Linux, I didn't tested Gparted from svn_125 yet). -- This message posted from opensolaris.org
