Re: [CentOS] help fdisk and dd

2010-03-15 Thread Scott Silva
on 3-5-2010 3:03 PM JohnS spake the following: On Fri, 2010-03-05 at 22:33 +, David G.Miller wrote: m.r...@... writes: m.r...@... wrote: [...] Alternatively, the answer on another techie mailing list I'm on is that you could disassemble the disks and use thermite. Just a hammer, no

Re: [CentOS] help fdisk and dd

2010-03-15 Thread MHR
On Mon, Mar 15, 2010 at 3:33 PM, Scott Silva ssi...@sgvwater.com wrote: on 3-5-2010 3:03 PM JohnS spake the following: On Fri, 2010-03-05 at 22:33 +, David G.Miller wrote: m.r...@... writes: m.r...@... wrote: [...] Alternatively, the answer on another techie mailing list I'm on is

Re: [CentOS] help fdisk and dd

2010-03-15 Thread Ed Westphal
MHR wrote: On Mon, Mar 15, 2010 at 3:33 PM, Scott Silva ssi...@sgvwater.com wrote: on 3-5-2010 3:03 PM JohnS spake the following: On Fri, 2010-03-05 at 22:33 +, David G.Miller wrote: m.r...@... writes: m.r...@... wrote: [...] Alternatively, the

Re: [CentOS] help fdisk and dd

2010-03-15 Thread John Stan
On 3/15/10, Scott Silva ssi...@sgvwater.com wrote: on 3-5-2010 3:03 PM JohnS spake the following: On Fri, 2010-03-05 at 22:33 +, David G.Miller wrote: m.r...@... writes: m.r...@... wrote: [...] Alternatively, the answer on another techie mailing list I'm on is that you could

Re: [CentOS] help fdisk and dd

2010-03-05 Thread John Doe
From: Mike McCarty mike.mcca...@sbcglobal.net What is the difference between the above two commands? Did I miss something? See my second post where I replaced zero by random... I don't know what n times more secure means. Could you please explain? Does that mean that, with n times as much

Re: [CentOS] help fdisk and dd

2010-03-05 Thread David G . Miller
m.r...@... writes: m.r...@... wrote: [...] Alternatively, the answer on another techie mailing list I'm on is that you could disassemble the disks and use thermite. Just a hammer, no need to disassemble the case. I dunno, a buddy who was in army intel back in the early

Re: [CentOS] help fdisk and dd

2010-03-05 Thread JohnS
On Fri, 2010-03-05 at 22:33 +, David G.Miller wrote: m.r...@... writes: m.r...@... wrote: [...] Alternatively, the answer on another techie mailing list I'm on is that you could disassemble the disks and use thermite. Just a hammer, no need to disassemble the

Re: [CentOS] help fdisk and dd

2010-03-05 Thread Paul Heinlein
On Fri, 5 Mar 2010, David G. Miller wrote: Over the years I've ended up with a pile of old hard drives. Some are unreliable; some won't even spin up and some are just REALLY old (e.g., 100s of MB size). I also inherited a couple of rifles (M-1 Garand and M-1 Carbine). I'm thinking write

Re: [CentOS] help fdisk and dd

2010-03-05 Thread John R Pierce
Paul Heinlein wrote: Or, donate the drives and a cheap torx driver to the educational charity of your choice. Kids *love* taking them apart, and the magnets are quite useful! hah, I have some magnets from some old 5.25 ESDI server drives on my fridge at home. one of them easily holds a

Re: [CentOS] help fdisk and dd

2010-03-05 Thread Fernando Gleiser
- Original Message From: Paul Heinlein heinl...@madboa.com To: CentOS mailing list centos@centos.org Sent: Fri, March 5, 2010 8:16:19 PM Subject: Re: [CentOS] help fdisk and dd Or, donate the drives and a cheap torx driver to the educational charity of your choice. Kids

[CentOS] help fdisk and dd

2010-03-04 Thread chloe K
Hi all What is the best practice to remove all data in the disk? ls fdisk ok or use dd Can data be recovered? and what is the dd command? Thank you __ Looking for the perfect gift? Give the gift of Flickr!

Re: [CentOS] help fdisk and dd

2010-03-04 Thread Rajagopal Swaminathan
Greetings, On Thu, Mar 4, 2010 at 6:31 PM, chloe K chloekcy2...@yahoo.ca wrote: Hi all What is the best practice to remove all data in the disk? ls fdisk ok or use dd Can data be recovered? and what is the dd command? fdisk just repartiions the disk. dd is an axe. It can be used to

Re: [CentOS] help fdisk and dd

2010-03-04 Thread Hakan Koseoglu
On Thu, Mar 4, 2010 at 1:01 PM, chloe K chloekcy2...@yahoo.ca wrote: What is the best practice to remove all data in the disk? If you want to securely remove the data, I recommend using a tool like DBAN. If you want to just wipe out the partition boot sector for a clean reinstallation, dd'ing

Re: [CentOS] help fdisk and dd

2010-03-04 Thread Sorin Srbu
-Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Hakan Koseoglu Sent: Thursday, March 04, 2010 2:54 PM To: CentOS mailing list Subject: Re: [CentOS] help fdisk and dd What is the best practice to remove all data in the disk? If you want

Re: [CentOS] help fdisk and dd

2010-03-04 Thread Benjamin Donnachie
On 4 March 2010 14:01, Sorin Srbu sorin.s...@orgfarm.uu.se wrote: I second that. Dban is the niftiest thing since sliced bread. Very handy tool, if a bit slow. But I guess that comes with the territory. 8-) The ATA Secure Erase command is generally faster but more difficult - see

Re: [CentOS] help fdisk and dd

2010-03-04 Thread Sorin Srbu
-Original Message- From: centos-boun...@centos.org [mailto:centos-boun...@centos.org] On Behalf Of Benjamin Donnachie Sent: Thursday, March 04, 2010 3:11 PM To: CentOS mailing list Subject: Re: [CentOS] help fdisk and dd On 4 March 2010 14:01, Sorin Srbu sorin.s...@orgfarm.uu.se wrote: I

Re: [CentOS] help fdisk and dd

2010-03-04 Thread John Doe
From: chloe K chloekcy2...@yahoo.ca What is the best practice to remove all data in the disk? ls fdisk ok or use dd Maybe something like (replace the ?): - fast but not secure: dd if=/dev/zero of=/dev/?d? bs=4096 - slow but more secure: dd if=/dev/zero of=/dev/?d? bs=4096 - n times

Re: [CentOS] help fdisk and dd

2010-03-04 Thread m . roth
Hi all What is the best practice to remove all data in the disk? ls fdisk ok or use dd Can data be recovered? and what is the dd command? Thank you http://www.dban.org/ Default with boot and nuke is three (or is it four?) passes, but you can tell it full US DoD seven passes, which

Re: [CentOS] help fdisk and dd

2010-03-04 Thread John Doe
From: John Doe jd...@yahoo.com From: chloe K What is the best practice to remove all data in the disk? ls fdisk ok or use dd Maybe something like (replace the ?): - fast but not secure: dd if=/dev/zero of=/dev/?d? bs=4096 - slow but more secure: dd if=/dev/zero of=/dev/?d?

Re: [CentOS] help fdisk and dd

2010-03-04 Thread John R Pierce
Sorin Srbu wrote: I second that. Dban is the niftiest thing since sliced bread. Very handy tool, if a bit slow. But I guess that comes with the territory. 8-) DBAN runs at wire speed. Its just that disks with 100s or 1000s of gigabytes take a long long time to fully write. DBAN's default

Re: [CentOS] help fdisk and dd

2010-03-04 Thread m . roth
Sorin Srbu wrote: I second that. Dban is the niftiest thing since sliced bread. Very handy tool, if a bit slow. But I guess that comes with the territory. 8-) DBAN runs at wire speed. Its just that disks with 100s or 1000s of gigabytes take a long long time to fully write. DBAN's default

Re: [CentOS] help fdisk and dd

2010-03-04 Thread Mike McCarty
John Doe wrote: From: chloe K chloekcy2...@yahoo.ca What is the best practice to remove all data in the disk? ls fdisk ok or use dd Maybe something like (replace the ?): - fast but not secure: dd if=/dev/zero of=/dev/?d? bs=4096 - slow but more secure: dd if=/dev/zero

Re: [CentOS] help fdisk and dd

2010-03-04 Thread Mike McCarty
m.r...@5-cent.us wrote: [...] Alternatively, the answer on another techie mailing list I'm on is that you could disassemble the disks and use thermite. Just a hammer, no need to disassemble the case. Mike -- p=p=%c%s%c;main(){printf(p,34,p,34);};main(){printf(p,34,p,34);} Oppose

Re: [CentOS] help fdisk and dd

2010-03-04 Thread Mike McCarty
John Doe wrote: Oops, for the slow procedures, it is /dev/random instead of /dev/zero... Ah, ok, disregard the other message. Mike -- p=p=%c%s%c;main(){printf(p,34,p,34);};main(){printf(p,34,p,34);} Oppose globalization and One World Governments like the UN. This message made from 100%

Re: [CentOS] help fdisk and dd

2010-03-04 Thread m . roth
m.r...@5-cent.us wrote: [...] Alternatively, the answer on another techie mailing list I'm on is that you could disassemble the disks and use thermite. Just a hammer, no need to disassemble the case. I dunno, a buddy who was in army intel back in the early eighties told me, about 10 years

Re: [CentOS] help fdisk and dd

2010-03-04 Thread Mike McCarty
m.r...@5-cent.us wrote: I wrote [...] Alternatively, the answer on another techie mailing list I'm on is that you could disassemble the disks and use thermite. Just a hammer, no need to disassemble the case. I dunno, a buddy who was in army intel back in the early eighties told me, about

Re: [CentOS] help fdisk and dd

2010-03-04 Thread John R Pierce
m.r...@5-cent.us wrote: That may be the case, but the laws and regulations still want that level of security, due to the regular one of our people lost a laptop/it was stolen, and 7 zillion PII* got stolen!!! mark yes, I am working for the gov't the oft-quoted 1995 vintage DoD

Re: [CentOS] help fdisk and dd

2010-03-04 Thread John R Pierce
m.r...@5-cent.us wrote: I dunno, a buddy who was in army intel back in the early eighties told me, about 10 years ago, that they could flatten out the platters and read some data. Thermite not only melts the platters, but will hit the Curie point. in the 80s, disks held 10-20MB per 5.25

Re: [CentOS] help fdisk and dd

2010-03-04 Thread m . roth
m.r...@5-cent.us wrote: I wrote [...] Alternatively, the answer on another techie mailing list I'm on is that you could disassemble the disks and use thermite. Just a hammer, no need to disassemble the case. I dunno, a buddy who was in army intel back in the early eighties told me,

Re: [CentOS] help fdisk and dd

2010-03-04 Thread m . roth
m.r...@5-cent.us wrote: That may be the case, but the laws and regulations still want that level of security, due to the regular one of our people lost a laptop/it was stolen, and 7 zillion PII* got stolen!!! mark yes, I am working for the gov't But not the DoD, let me say. the