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#1 2008-03-03 19:14:45

mico
Member
From: Slovenia
Registered: 2004-02-08
Posts: 247

Securely wipe data on a reiserfs filesystem

I have a partition (sda1) with reiserfs filesystem on it. I removed some files and I want to make sure nobody will be able to restore any data from the removed files. I see 2 ways to do this:

1) copy the remaining data to another media, write /dev/urandom to /dev/sda1, recreate reiserfs filesystem, copy the data back. This is safe, but I'd like to avoid copying all the remaining files. I'd have to buy a new storage medium to do that.

2) write from /dev/urandom to a file on sda1 until filesystem is full, then reboot to sync disk. This is much easier to do, but I don't know if this is safe. I'm not sure if this will overwrite all the free data. Could some tiny fragmented chunks still remain untouched?

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#2 2008-03-03 19:53:48

FeatherMonkey
Member
Registered: 2007-02-26
Posts: 313

Re: Securely wipe data on a reiserfs filesystem

http://mareichelt.de/pub/notmine/sanitizing.html this seemed the best I can find conclusion something like 33 times with psuedo-random, but who knows, perhaps it can only truely be done by destroying the hard drive.

Last edited by FeatherMonkey (2008-03-03 20:01:34)

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#3 2008-03-04 01:34:02

SpookyET
Member
Registered: 2008-01-27
Posts: 410

Re: Securely wipe data on a reiserfs filesystem

Try BCWipe.

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