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- zerodisk(1)
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- NAME
- zerodisk - erase unallocated disk blocks
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- SYNTAX
- zerodisk [device]
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- DESCRIPTION
- The zerodisk command is used to erase those blocks of disk space
- which are presently unused, but may still contain information from
- removed files. If a device name is given, that device's unused blocks
- are zeroed, otherwise the device containing the current directory is
- zeroed. Any existing files are left untouched.
- Possible reasons for using zerodisk are to protect outdated but
- sensitive data, or to make it easier to track down lost disk blocks
- if some future need should arise.
- Zerodisk should be very safe to use, as it works by simply writing
- zeroes to a temporary file until there is no more space left on the
- given device, and the operating system is not bypassed.
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- EXAMPLES
- zerodisk a:
- zerodisk c:/tmp/
- zerodisk /tmp/
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- FILES
- [device]zerodisk.tmp - temporary file created on given device.
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- AUTHOR
- Steve Creps, Indiana University (creps@silver.bacs.indiana.edu).
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