The feature wipe unused disk space
is not available anymore in completely newly written US v13.00. It is planned to add this feature again in US v13.10 according to a reply on an email sent to IDM regarding missing features in US v13.00 in comparision to US v6.10.
To secure clean unused disk space you need either US v6.10 or the free tool sdelete
. Please note that the tool sdelete
can only secure delete entirely free clusters on a hard disk. It cannot clean the free part of a cluster partly containing data of a file as the clean file slack space
feature of UltraSentry cleans.
Another method of secure deleting unused disk space is to create a file which needs entire free space on a hard disk and then secure delete this file using UltraSentry. That's the method sdelete uses and US v6.10 used to wipe unused disk space. On FAT32 partitions this is a little bit harder to achive as maximum file size is 4 GB and therefore it is perhaps necessary to create multiple 4 GB files plus one more file taking the rest of the unused disk space.
Hint on sdelete usage for secure deletion of unused disk space: use -p 4
additionally to -z F:
as only with 4 passes the data are really secure deleted. (F
is an example for the letter of the drive on which to secure delete the unused disk space.)