Securely ERASE a hard disc in linux - Printable Version +- Linux-Noob Forums (https://www.linux-noob.com/forums) +-- Forum: Linux Noob (https://www.linux-noob.com/forums/forum-3.html) +--- Forum: Tips and Tricks (https://www.linux-noob.com/forums/forum-59.html) +---- Forum: Filesystem Management (https://www.linux-noob.com/forums/forum-26.html) +---- Thread: Securely ERASE a hard disc in linux (/thread-3109.html) |
Securely ERASE a hard disc in linux - anyweb - 2004-10-19 as root do this Code: dd if=/dev/random of=/dev/hda && dd if=/dev/zero of=/dev/hda ps. this takes a long time, so be patient (do it overnight or something) thanks to Grep420 cheers anyweb Securely ERASE a hard disc in linux - grep420 - 2004-10-27 :) Securely ERASE a hard disc in linux - znx - 2005-03-31 Nice.... Not to rain on a great example but the DoD does suggest three write passes to full erase data. I seriously doubt normal recovery software could be done successfully after the 2 passes but companies like Vogon International do make claims of that sort of crazy recovery. Also for some more dry reading a techinal proposal on ATA secure erase. Securely ERASE a hard disc in linux - xDamox - 2005-03-31 I though it was hard trying to recover files on the normal ext3 file system [img]<___base_url___>/uploads/emoticons/default_dry.png[/img] never did recover them. Anyways also run the shred command :)this overwrites the file Code: shred -v -n 1024 file.txt Securely ERASE a hard disc in linux - znx - 2005-04-01 o_O Code: shred -v -n 1024 file heh i know i said more than 2 but 1024 maybe a little bit of paranoia kickin in! exactly what dont you want us to find [img]<___base_url___>/uploads/emoticons/default_laugh.png[/img] Code: shred -n 25 -u -v -z file i think that should be enough. -n 25 = 25 times over (the default) -u = remove file first before writing -v = be verbose (always do this to stop yourself from getting itchy) -z = final overwrite with zeroes (to clear evidence of shred) And start from the man: Quote:The following are examples of filesystems on which shred is not effective:* log-structured or journaled filesystems, such as those supplied with |