See https://aif.square-r00t.net/ for more information about this project. This element specifies a type to be used for validating storage devices, such as hard disks or mdadm-managed devices. This element specifies a type to validate what kind of disk formatting. Accepts either GPT or BIOS (for MBR systems) only. This element validates a disk size specification for a partition. Same rules apply as those in parted's size specification. This element validates a filesystem type to be specified for formatting a partition. See sgdisk -L (or the table at http://www.rodsbooks.com/gdisk/walkthrough.html) for valid filesystem codes.