Presets are a pre-defined list of areas on the computer MacCleanse has been instructed to erase. These items can even be erased using super-user privileges if desired (not available in the 'App Store' version)! ![]() After clicking the + icon at the bottom of the list and choosing a location, press the pencil icon to edit additional erasure settings. "Blacklist" locations, located under the Settings tab, allows the creation of a list of files and/or folders to be erased with every cleanse operation. ![]() However, enabling this feature will substantially increase the time it takes to erase files. This will delete the digital link to the file on the disk and then overwrite it with random data ensuring it cannot be recovered with commercially available software. To ensure files are not just deleted, but actually wiped off the disk, enable the "Delete files securely" checkbox in the Settings tab under Cleanup/Recovery. This leaves deleted files to potentially be recovered by data rescue programs if they have not already been overwritten. In time, new files will overwrite this location on the hard disk. The digital "link" to where the file is physically stored on the disk is forgotten and the icon disappears when browsing files on your computer. This is due to the fact that the files are not actually erased from the physical hard disk.
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