The SIZE_IN_MB is the size of the partition you want to create, in MB. create partition logical size=SIZE_IN_MB – use this command to create a new logical partition.create partition extended size=SIZE_IN_MB – use this command to create a new extended partition.create partition primary size=SIZE_IN_MB – use this command to create a new primary partition.assign – use assign to assign a letter or a mount point to the current active partition.active – use the active command to set the focus on the current partition to be active.list volume – use list volume to get information about each volume available on the computer.list partition – use this command to get information about each partition available on a specific disk.