In order to clean free space on a hard drive, BCWipe creates temporary files with wiping pattern inside. The temporary files reside in
'~BCWipe.tmp' folder (at the root of the wiped drive) and occupy all free disk space for a short period, then BCWipe deletes the files, so
you have the same disk space as before running BCWipe.
Such process is called "wiping', and any wiping utility works in the same way. Wiping is "overwriting" of the disk space, so the free space will be certainly lost for a moment.
Usually, if there were no errors and the process was completed, or you canceled the process with 'Cancel' button, BCWipe exits properly - i.e.
it deletes all temporary files. If the process is "roughly" terminated (power switched off), or some error happens, temporary BCWipe files may remain.
They can be deleted with standard Windows delete.
So, to get your disk space back, please delete the folder ~BCWipe.tmp located on the root directory of the wiped drive.
--------------------------------------------
Some applications may crash or behave unpredictably under "low disk space" conditions.
We received such requests quite frequently.
That is why we modified "wipe free space" process and version 6 of BCWipe does not cause a "low disk space" condition.
It always keeps 1 GB of disk space, if it is running in elevated mode ('as administrator').