I find that the default system drive that Deepin creates, being limited to only 15GB is much too small and often presents a problem when the user install many programs that may be necessary, in short this limited space allocation for system disk is used quickly, how can the user custom format the drive with full disk encryption but also be able to increase the size of the system disk to 40 or 50 GB instead of the default 15GB, can someone help by outlining the steps necessary in this process?