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For the security conscious, here's a disk utility that makes SURE every
scrap of your deleted files is gone, gone, gone. Disk CleanUp doesn't scan for the
undeleted nuisance files other housekeeping tools do. Rather, it scours all the empty
space of your storage area, looking for any trace of files you've already deleted. (Often,
deleting a file removes its directory entry but leaves data on your disk.)
Disk CleanUp can be configured either for normal erasure (i.e., erasures that simply write
the F6 character to all bytes in deleted files), or the more comprehensive NSA-approved
erasure method (i.e., erasures that specify cleared files be written-to 7 times using an
alternating byte sequence of 00, FF, 00, FF, 00, FF, F6) for greater security. Other
options you can choose are background operation priorities (which affect scanning speed
and available system resources), buffer size (which influences how long a scan will take
to finish), and optional program icon placement in the system tray. Disk CleanUp may also
be invoked by any scheduling program, using command line arguments that are detailed in
the product's Help file.
Even in its high priority settings, I found that Disk CleanUp is no speedster when there's
a lot of empty space. So if your target drive has 1 gig or more free, it's probably best
to run scans in high priority mode at a low-usage time. Also, for faster scan speed,
select a buffer size of 256K or higher. Lower than that, depending on the amount of empty
space on your drive, the scan could take several hours. Scan results are posted on
completion, allowing you to delete out of the Recycle Bin, and you may opt to save a log
of findings in the program folder.
Disk CleanUp works with floppies, any FAT16 or FAT32 hard drive, as well as Windows NT
NTFS drives. However, Disk CleanUp is not intended for use on compressed drives. It is
very simple to install, configure, and use, and it comes with an excellent help file.
Disk CleanUp has a 30-day evaluation period and is completely functional, without any nag
reminders. So, in the shareware spirit, you're on your honor to register by sending your
$20 (check or money order in U.S. funds) to: Gregory Braun, P.O. Box 1307, Milwaukee, WI
53201-1307 USA. (International postal orders must be in U.S. funds.) Registered users will
receive regular update notices and email support.
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