Calculate Occupied Space

Use this dialog box to see the total size, occupied disk space, and other information about selected files and directories. You can also estimate the needed space on disk with the given cluster size.

Dialog Box Options

Total size
Total size of all selected files and directories (all files in directories).
Occupied disk space
The smallest allocation unit on a disk is a cluster. Each file occupies disk space that is a multiple of the cluster size. Occupied disk space is the total disk space occupied by the selected files and directories.
Disk space utilization
It is a ratio between the total size and the occupied disk space.
Total compressed size
When you have compressed files on an NTFS volume (see the NTFS section in File Systems), you can see here their compressed size.
Compress ratio
It is a ratio between the total compressed size and the total size.
Estimate needed space
For cluster size
Specify the cluster size of the disk for which you want to estimate the space needed to store all selected files and directories. This value defaults to the cluster size of the disk in the inactive panel.
Estimated space
Estimated space for storing all selected files and directories.
Cluster utilization
It is a ratio between the total size and the estimated space.

See Also

Calculating Occupied Space

From the Sally manual (GPL-2.0-or-later), © 1997-2023 Open Salamander Authors; © 2025-2026 Elias Bachaalany. Source: manual source (zip) · original page in the Sally repository