must be smaller or equal to free space.
/LOGO - Create logical drive with FAT16/FAT32 override
Works as /LOG.
/FPRMT - Prompt for FAT32/FAT16 in interactive mode
With /FPRMT you won't get the FDISK startscreen where you are asked for support for large disks. Instead, you will be promted for FAT16/FAT32 each time you create a partition.
Note that the prompt for FAT16/FAT32 will be available for ALL partitions, so this option can be used to force FDISK to create FAT 32 partitions smaller than 540Mb. (By default, FDISK uses FAT32 for partitions greater than 540Mb only).
/Q - Skip forced reboot on exit
With /Q the PC will not be rebooted after modifying the Partition Tables. However, I don't recall that DOS 7.x FDISK does a reboot. Maybe it's because I always use FDISK from a boot-floppy.
/X - Do not use LBA partitions
With /X you won't get any LBA partitions. See Micro Firmware Technical Support for more details.
/ACTOK - Do not check drive integrity
With /ACTOK the integrity of drive is not checked making FDISK faster.
/CMBR - Recreate Master Boot Record on specified disk
Works as /MBR with the exception that you specify the disk to have it's MBR recreated.
Notes on /PRI, /PRIO and /LOG, /LOGO
As far as I can tell, PRI and LOG creates FAT32 when partitions are larger than 512Mb and FAT16 when partitions are smaller than 512Mb. PRIO and LOGO creates FAT16 even if partitions are larger than 512Mb (in effect, it’s like FDISK from DOS 5/6).