You'll note that this section has a scroll bar to the right, which means that there might be more partitions than can be displayed at one time. If you use the uparrow and downarrow keys, you can see if there are any additional partitions. Device Displays the partition's device name. Requested Shows the partition's initial size. Actual Shows the partition's current size.
Type Shows the partition's type.
As you scroll through the Current Disk Partitions section, you might see an Unallocated Requested Partitions title bar, followed by one or more partitions. As the title implies, these are partitions that have been requested but, for one reason or another, have not been allocated. A common reason for having an unallocated partition is a lack of sufficient free space for the partition. In any case, the reason the partition remains unallocated will be displayed after the partition's mount point. Each line in the Drive Summaries section represents a hard disk on your system.