Full Disclosure mailing list archives
Re: Erasing a hard disk easily
From: Maarten <fulldisc () ultratux org>
Date: Wed, 14 Jul 2004 10:05:38 +0200
On Wednesday 14 July 2004 04:23, Aditya, ALD [ Aditya Lalit Deshmukh ] wrote:
I'm guessing that drilling a hole in the case, pouring in some sand and firing up the disk would probably do a good job of rendering the data non-readable too ;>since the original poster only wanted to clean up the harddisk for donations so that no one can read the disks I think the Linux approach is the best one dd if=/dev/zero of=/dev/hd? ; dd if=/dev/urandom of=/dev/hd?
I agree. But be advised that using /dev/urandom is several orders of magnitude slower than either /dev/zero or /dev/full, so if you're not paranoid or the data isn't that sensitive, you might want to opt for only writing zeros and ones instead... maarten@cypher:~> time dd if=/dev/urandom of=/dev/null count=10000 10000+0 records in 10000+0 records out real 0m4.770s user 0m0.016s sys 0m4.513s maarten@cypher:~> time dd if=/dev/zero of=/dev/null count=10000 10000+0 records in 10000+0 records out real 0m0.269s user 0m0.020s sys 0m0.019s Maarten _______________________________________________ Full-Disclosure - We believe in it. Charter: http://lists.netsys.com/full-disclosure-charter.html
Current thread:
- RE: Erasing a hard disk easily, (continued)
- RE: Erasing a hard disk easily Javier Liendo (Jul 12)
- RE: Erasing a hard disk easily Peter B. Harvey (Information Security) (Jul 12)
- RE: Erasing a hard disk easily Jos Osborne (Jul 13)
- RE: Erasing a hard disk easily Marek Isalski (Jul 13)
- RE: Erasing a hard disk easily amilabs (Jul 13)
- Re: Erasing a hard disk easily Doug White (Jul 13)
- RE: Erasing a hard disk easily amilabs (Jul 13)
- Re: Erasing a hard disk easily Denis McMahon (Jul 13)
- Re: Re: Erasing a hard disk easily Maarten (Jul 13)
- RE: Erasing a hard disk easily Jos Osborne (Jul 13)
- Re: Erasing a hard disk easily Aditya, ALD [ Aditya Lalit Deshmukh ] (Jul 13)
- Re: Erasing a hard disk easily Maarten (Jul 14)
- Re: Erasing a hard disk easily Darren Reed (Jul 14)
- Re: Erasing a hard disk easily James Sneeringer (Jul 14)
- Re: Erasing a hard disk easily Larry Apolonio (Jul 14)
- Re: Erasing a hard disk easily Gary E. Miller (Jul 14)
- Re: Erasing a hard disk easily Darren Reed (Jul 15)
- Re: Erasing a hard disk easily Gary E. Miller (Jul 15)
- Re: Erasing a hard disk easily Darren Reed (Jul 16)
- Re: Erasing a hard disk easily Kurt Seifried (Jul 16)
- Re: Erasing a hard disk easily Gary E. Miller (Jul 16)
- Re: Erasing a hard disk easily Aditya, ALD [ Aditya Lalit Deshmukh ] (Jul 13)
- Re: Erasing a hard disk easily Dave Horsfall (Jul 15)