Security Basics mailing list archives
RE: Hard Drive data security
From: "Paris E. Stone" <pstone () alhurra com>
Date: Tue, 5 Oct 2004 14:09:19 -0400
I was informed that /dev/null just wrote zeros to the drive and that a better way was multiple passes using random: dd if=/dev/urandom of=/dev/had or maybe /dev/random Not positive, so many *nixes with their own ways of doing things. But basically /dev/urandom writes ones and zeros in random fashion. ~~~~~ Paris E. Stone, "Linux Zealot" CISSP, CCNP, CNE, MCSE, CIW Master Administrator ~~~~~ "Not all who wander are lost." J.R.R.T. -----Original Message----- From: xyberpix [mailto:xyberpix () xyberpix com] Sent: Tuesday, October 05, 2004 8:47 AM To: Kristján Hreinn Bergsson Cc: Paul Kurczaba; Security Basics[List] Subject: RE: Hard Drive data security Whoops! My error, yep Kristjan is right. xyberpix On Tue, 5 October, 2004 9:51 am, Kristján Hreinn Bergsson said:
Don't you mean: dd if=/dev/null of=/dev/hda Kristján -----Original Message----- From: xyberpix [mailto:xyberpix () xyberpix com] Sent: 4. október 2004 09:06 To: Paul Kurczaba Cc: Security Basics[List] Subject: Re: Hard Drive data security In the past I have always used dd on this one, you will need access to Linux, or a bootable linux distro, any of them will do, knoppix, phlak, mini-slack, etc. Then run: dd if=/dev/hda of=/dev/null check the syntax by using man dd as I may have it backwards, but it'll wipe it for you. I've known a couple of SysAd's who've done this by accident on a live system in the past, and it wipes everything really well. xyberpix On Tue, 2004-09-28 at 17:11, Paul Kurczaba wrote:Hi, I have a question about hard drive data security. The hard drive on my notebook is failing and Dell is going to replace it. They are going to take the old one with them. How can I securely remove the data from the hard drive? Thanks, Paul-- For Security and Open Source news: http://xyberpix.demon.co.uk
-- For security and Opensource news check out: http://xyberpix.demon.co.uk
Current thread:
- Re: Hard Drive data security, (continued)
- Re: Hard Drive data security J. Theriault (Oct 04)
- Re: Hard Drive data security creative (Oct 04)
- Re: Hard Drive data security xyberpix (Oct 04)
- RE: Hard Drive data security Kristján Hreinn Bergsson (Oct 05)
- RE: Hard Drive data security xyberpix (Oct 05)
- Re: Hard Drive data security Ansgar -59cobalt- Wiechers (Oct 06)
- Re: Hard Drive data security Atom 'Smasher' (Oct 07)
- RE: Hard Drive data security xyberpix (Oct 05)
- Auditing a Win2K box xyberpix (Oct 07)
- Re: Auditing a Win2K box Marco Bellini (Oct 07)
- Re: Auditing a Win2K box Josh Mills (Oct 07)
- RE: Hard Drive data security Paris E. Stone (Oct 06)
- RE: Hard Drive data security Atom 'Smasher' (Oct 07)
- Re: Hard Drive data security Ansgar -59cobalt- Wiechers (Oct 07)
- Re: Hard Drive data security tony tony (Oct 12)
- RE: Hard Drive data security David Gillett (Oct 13)
- RE: Hard Drive data security D. Weiss (Oct 14)
- Re: Hard Drive data security Kirk Schafer (Oct 15)
- Re: Hard Drive data security Ghaith Nasrawi (Oct 15)
- RE: Hard Drive data security ssaehrig (Oct 15)
- Re: Hard Drive data security GuidoZ (Oct 15)
- Re: Hard Drive data security GuidoZ (Oct 15)