Re: [newbie] Shered VS Delete

2003-09-14 Thread Chris
On Saturday 13 September 2003 11:22 pm, David E. Fox wrote: Why 20 times? How is it possible to recover a file that has been overwritten once? Forensics :). I don't understand that well how this works at the lower (physical) level, but even so, I'd imagine it could be a moot point for

Re: [newbie] Shered VS Delete

2003-09-13 Thread Mathieu Frenette
Hi Kaj, As for fragmentation, it should not make a difference whether you use delete or shred, the same basic process happens, as far as file allocation is concerned, and fragmentation will still occur. M. I have to disagree. [snip] In Linux - as in all Unixes - fragmentation is a

Re: [newbie] Shered VS Delete

2003-09-13 Thread Miark
Thanks for all the replies everybody. I 'assume' then that when shredding file(s) that there is no fragmentation such as there is in the windows os and that the freed space can/is immediately available to be written to? Unless you are using either JFS or XFS (sorry, I can't remember

Re: [newbie] Shered VS Delete

2003-09-13 Thread Miark
On Sat, 13 Sep 2003 01:27:14 +, Kaj Haulrich [EMAIL PROTECTED] wrote: Shredding it will overwrite the file about 20 times making it impossible to recover. Why 20 times? How is it possible to recover a file that has been overwritten once? Miark Want to buy your Pack or Services from

Re: [newbie] Shered VS Delete

2003-09-13 Thread Mathieu Frenette
Hi! Why 20 times? How is it possible to recover a file that has been overwritten once? Because hard drives use magnetic imprints (I don't know the exact term for that), even once the magnetic information has been replaced by other information, the old one should still be present as a kind of

Re: [newbie] Shered VS Delete

2003-09-13 Thread Eric Huff
Shredding it will overwrite the file about 20 times making it impossible to recover. Why 20 times? How is it possible to recover a file that has been overwritten once? I imagine that if you measure the 1's and 0's with a device that takes an analog reading, you can tell wether it was

Re: [newbie] Shered VS Delete

2003-09-13 Thread Charlie M.
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 September 13, 2003 10:18 am, Mathieu Frenette wrote: Top posting because it's brief. The difference between shredding and deleting is a matter of degree. Wipe and overwrite _now_ versus wipe and overwrite whenever you get a round-to-it. ;-) Any

Re: [newbie] Shered VS Delete

2003-09-13 Thread David E. Fox
Why 20 times? How is it possible to recover a file that has been overwritten once? Forensics :). I don't understand that well how this works at the lower (physical) level, but even so, I'd imagine it could be a moot point for binary files, i.e., traces of pr0n ::). Even if you don't shred,

Re: [newbie] Shered VS Delete

2003-09-12 Thread Chris
On Friday 12 September 2003 06:37 pm, Heather/Femme wrote: What is the difference between shredding a file/dir in konqueror and deleting it? shred overwrites those sectors on the hard disk where the file was multiple times thus preventing someone from being able to reconstruct the info

Re: [newbie] Shered VS Delete

2003-09-12 Thread Mathieu Frenette
Thanks for all the replies everybody. I 'assume' then that when shredding file(s) that there is no fragmentation such as there is in the windows os and that the freed space can/is immediately available to be written to? As for fragmentation, it should not make a difference whether you use

Re: [newbie] Shered VS Delete

2003-09-12 Thread Kaj Haulrich
On Saturday 13 September 2003 01:05 am, Mathieu Frenette wrote: Thanks for all the replies everybody. I 'assume' then that when shredding file(s) that there is no fragmentation such as there is in the windows os and that the freed space can/is immediately available to be written to? As

Re: [newbie] Shered VS Delete

2003-09-12 Thread Carroll Grigsby
On Friday 12 September 2003 07:54 pm, Chris wrote: Thanks for all the replies everybody. I 'assume' then that when shredding file(s) that there is no fragmentation such as there is in the windows os and that the freed space can/is immediately available to be written to? Chris: Unless you

Re: [newbie] Shered VS Delete

2003-09-12 Thread Kaj Haulrich
On Saturday 13 September 2003 04:21 am, Kaj Haulrich wrote: snip Anyway - I recently had to buy a PC for my daughter. It came with something called WindowsXP preloaded. The filesystem was called NTFS, which - so I'm told - should combine some of the benefits of UNIX and OS/2. It was heavily

Re: [newbie] Shered VS Delete

2003-09-12 Thread Chris
On Friday 12 September 2003 09:28 pm, Carroll Grigsby wrote: On Friday 12 September 2003 07:54 pm, Chris wrote: Thanks for all the replies everybody. I 'assume' then that when shredding file(s) that there is no fragmentation such as there is in the windows os and that the freed space

Re: [newbie] Shered VS Delete

2003-09-12 Thread Aron Smith
On Fri, 2003-09-12 at 16:09, Chris wrote: What is the difference between shredding a file/dir in konqueror and deleting it? you can undelete a file you cannot unshred a file cause it gets over written. Want to buy your Pack or Services from MandrakeSoft? Go to http://www.mandrakestore.com

Re: [newbie] Shered VS Delete

2003-09-12 Thread Heather/Femme
On Sat, 13 Sep 2003 04:21:42 + Kaj Haulrich [EMAIL PROTECTED] wrote: snip Anyway - I recently had to buy a PC for my daughter. It came with something called WindowsXP preloaded. The filesystem was called NTFS, which - so I'm told - should combine some of the benefits of UNIX and OS/2.