fs Disk Free Space

freeSpace This attribute indicates the available free disk space(in bytes) on the disk. Free space is reduced by bad blocks (if any). If there are different numbers of bad blocks on the disks in a dual-disk system, the reported free space will differ on the two disks. Moreover, due to the DOS file system internal representation of directories and files, adding and deleting files may fragment the disks differently resulting in some disk space wasted. A small discrepancy (less than 1% of the disk size) in the disks free space is considered as normal.