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On Wed, 18 Aug 2004 19:22:54 -0400 christoph at linuxsoup.com wrote: > I am just catching up on some email, but this thread caught my > interest. I have looked into the ext3 code or read any of the papers, > but I was always under the impression that the filesystem journal only > stored a bitmask (table) of modified blocks. There shouldn't be any > data in there. For the most part, you should only be concerned about the data. It depends on how clean you want to make it. If you want to wipe a drive or partition then the filesystem makes no difference, but on Linux and Unix systems you probably want to wipe the swap area too. I found the following online. This is a Usenix paper on the subject: http://wipe.sourceforge.net/secure_del.html These are products: http://www.r-wipe.com/ http://www.jetico.com/ http://www.dtidata.com/products_disk_wipe.asp Note that the man page for shred(1) contains some caveats on journals. -- Jerry Feldman <gaf at blu.org> Boston Linux and Unix user group http://www.blu.org PGP key id:C5061EA9 PGP Key fingerprint:053C 73EC 3AC1 5C44 3E14 9245 FB00 3ED5 C506 1EA9 -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available URL: <http://lists.blu.org/pipermail/discuss/attachments/20040819/8070bcf8/attachment.sig>
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