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How can I securely erase a USB hard drive?
How to delete file(s) in secure manner?

I am looking for software/script/whatever that can completely destroy data on hard drive. By destroy I mean beyond recovery(even with special software). Is there any way to do this? Thanks.

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marked as duplicate by belacq, Takkat, jokerdino, hhlp, Jorge Castro Oct 27 '12 at 15:57

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

    
See the accepted answer to this question: askubuntu.com/questions/17640/… –  user68186 Oct 26 '12 at 15:12

3 Answers 3

The tool named wipe deletes data permanently on HDD. To install it using terminal

sudo apt-get install wipe

To wipe out all data within a whole HDD type in terminal.

sudo wipe /dev/sdaX

where X is your partition.

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Do I have to use wipe from live-cd to format my main hard-drive where my OS is installed? –  zuberuber Oct 26 '12 at 15:19
    
How do I figure out my Partition? –  jack Oct 9 at 4:07

DBAN http://www.dban.org/ is commonly used for that purpose, it is an iso image which you burn to a CD (or other media), boot, and write random data over the disk multiple times (depending on settings).

Somewhat similar to something like

dd if=/dev/urandom of=#disk path#

Though I presume DBAN might have more options and a nicer interface

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Would this be something you'd be looking for?

sudo -i
shred -f -n 5 -z [Location of drive]

If you want to make shred do more distortion-application, then bring up shred's help:

shred --help

or

man shred
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Do I have to use shred from live-cd to format my main hard-drive where my OS is installed? –  zuberuber Oct 26 '12 at 15:23
    
That would be best, since if you're running off a dual-boot, you would shred the "disk" file that Ubuntu is running from. –  Omio Oct 26 '12 at 15:26

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