Calculate occupied space (Ctrl+L) clarification

[Valentino]

Since Compressed file attribute also affects the size on disk I would mention it:

---------------------------
Total space occupied:
13 765 480 155 bytes in 53 280 file(s),
in 4 746 directories
(= 13 442 852k, 13 128M, 13G)
Actual space used (considering cluster size)
on source drive: 4 815 155 200 Bytes
Required on target drive: 13 896 060 928 Bytes
---------------------------

-->

---------------------------
Total space occupied:
13 765 480 155 bytes in 53 280 file(s),
in 4 746 directories
(= 13 442 852k, 13 128M, 13G)
Actual space used (considering compression and cluster size)
on source drive: 4 815 155 200 Bytes
Required on target drive: 13 896 060 928 Bytes
---------------------------