If you want to know the amount of free space on a disk, press the [F] (Freespace) key. The message "Disk Statistics for Drive" will appear. Type in the name of the desired drive (A or C), and statistics for the disk in that drive will be displayed. For example, a disk in drive A might read:
Total: 354k Cluster Size: 1024 Free: 120k Tot Clusters: 354 Used: 234k Percent Free: 33.8%The "Total" shows the capacity of the disk. When a file is created, space for it is allocated in chunks, called "clusters." Therefore, the "Cluster Size" is the minimum amount of space that may be taken up by a file. (If the cluster size is 1024 bytes, then a file with only 500 bytes will still be considered to take up 1024 bytes, or one cluster.) The Free disk space command is very helpful when you need to make sure there is adequate room on a disk intended to receive copied files.