Re: TI9 - Invalid Partition Size I am getting the same error, "Invalid partition size", with Disk Director Suite Version 9. I have checked the partitions, and they are fine. The disk is a Maxtor One Touch 300 GB, with over 300 GB free, NTFS file system. I am trying to make another partition of about 100GB, but I always get this error message. Could it be because I am trying to partition an external disk?