Only on a hard drive partition with a filesystem without journaling.
Otherwise the advice is crap.
No, 'tis not.
I made this wiki --
https://trisquel.info/en/wiki/wipe-out-files-and-partitions on this topic,
please add there your knowledge.
@triser You surely want to read the comment made by Jonathan DePrizio in that
url
Hi triser,
I found this really helpful when wiping my USB drive:
http://techthrob.com/2009/03/02/howto-delete-files-permanently-and-securely-in-linux/
I'm sure I used the sswap command.
Hope it is helphul!
$ shred -n35 -v -z -u file
You can overwrite multiple times. I don't know if there's a limit. The more
passes, the more time consumption.
-n # indicates how many overwrites you want the program make...
-n25 twenty five times
-n2 two times
Actually is more a lack of reference. I have read a little about both
(homepages of each, forums, wiki, etc) and while founding several references
about shred being unsafe in journaling systems, I found none in the nautilus
wipe. I am not deying that it might also not be 100% safe, but
I always do reformatting. But this sounds a little different though. It would
be lovely to know some specifics and the main difference of this method
compare to a total reformat. I got my usb drive from Spectra with a size of
1T. Very useful for me and its the one I got.
Hello.
I think some things are important to notice.
shred is not secure in EXT3 file system, or any system using journaling for
that matter. Also it is a command line only tool.
A more secure and easy way to securely wipe a file is this:
install nautilus-wipe (in the reps). It will install
This 2011 paper argues that single files cannot be securely deleted on flash
media. You'll have to wipe the whole media.
http://www.usenix.org/events/fast11/tech/full_papers/Wei.pdf
Normally when we format drives or delete files the system just removes the
file descriptor pointing to that file, but the content of the files is still
there and can be mostly recovered with some tools. Now, how to remove/format
completely the files from the flash drive so that they cannot
You can use the shred command for this. It overwrites a file with random
information. You can use it in a terminal, like this:
shred a_file
It safe to remove the file after this. You can shred and delete files with
command, like this:
shred -u a_file
thank you! any way to format the whole USB drive in a similar way?
Other options:
- BleachBit: http://bleachbit.sourceforge.net/
- secure-delete
Syntax: srm [-dflrvz] file1 file2 etc.
Options:
-d ignore the two dot special files . and ...
-f fast (and insecure mode): no /dev/urandom, no synchronize mode.
-l lessens the security (use twice for total
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