Hi,
I have a dozen of drives, ranging from 10Gb to 200Gb. I want to wipe them clean before donating them. I have a IDE/SATA to USB converter that works. I can see the drives properly.
DBAN does not currently support external USB drive. Any other alternatives?
I have a dozen of drives, ranging from 10Gb to 200Gb. I want to wipe them clean before donating them. I have a IDE/SATA to USB converter that works. I can see the drives properly.
Depending on the filesystem on the drives, shred may be fine "man shred" can tell you more. You can also use "cat /dev/random > /dev/devicename" as well.
Barry
On Sat, 14 Apr 2007 11:20:16 -0500 (CDT) Barry Brimer lists@brimer.org wrote:
I have a dozen of drives, ranging from 10Gb to 200Gb. I want to wipe them clean before donating them. I have a IDE/SATA to USB converter that works. I can see the drives properly.
Depending on the filesystem on the drives, shred may be fine "man shred" can tell you more. You can also use "cat /dev/random > /dev/devicename" as well.
I have looked at shred before asking, and it said:
The following are examples of file systems on which shred is not effective, or is not guaranteed to be effective in all file system modes:
* log-structured or journaled file systems, such as those supplied with AIX and Solaris (and JFS, ReiserFS, XFS, Ext3, etc.)
How secure is cat /dev/random > /dev/devicename ?
On Sat, 14 Apr 2007 centos@911networks.com wrote:
On Sat, 14 Apr 2007 11:20:16 -0500 (CDT) Barry Brimer lists@brimer.org wrote:
I have a dozen of drives, ranging from 10Gb to 200Gb. I want to wipe them clean before donating them. I have a IDE/SATA to USB converter that works. I can see the drives properly.
Depending on the filesystem on the drives, shred may be fine "man shred" can tell you more. You can also use "cat /dev/random > /dev/devicename" as well.
I have looked at shred before asking, and it said:
The following are examples of file systems on which shred is not effective, or is not guaranteed to be effective in all file system modes:
- log-structured or journaled file systems, such as those supplied
with AIX and Solaris (and JFS, ReiserFS, XFS, Ext3, etc.)
As you did not mention the filesystem on your USB drives, I did not know whether or not shred would be effective for you.
It may or may not be reasonable to format the drives with vfat or ext2 and then run shred, which would add an additional layer of masking.
How secure is cat /dev/random > /dev/devicename ?
How secure? I can't really answer that. I have used at before for the same purpose (I usually run it 3 times) and then tried to recover files with no successful recoveries.
I am by no means an expert in this area, I am simply offering a few ideas.
Barry
On Sat, 14 Apr 2007 11:42:40 -0500 (CDT) Barry Brimer lists@brimer.org wrote:
As you did not mention the filesystem on your USB drives, I did not know whether or not shred would be effective for you.
It may or may not be reasonable to format the drives with vfat or ext2 and then run shred, which would add an additional layer of masking.
I should have 1st mentioned that 3 are Ext3, 1 a ReiserFS, the rest are NTFS, there may be one FAT32.
On Sat, Apr 14, 2007 at 09:28:51AM -0700, centos@911networks.com wrote:
On Sat, 14 Apr 2007 11:20:16 -0500 (CDT) Barry Brimer lists@brimer.org wrote:
I have a dozen of drives, ranging from 10Gb to 200Gb. I want to wipe them clean before donating them. I have a IDE/SATA to USB converter that works. I can see the drives properly.
Depending on the filesystem on the drives, shred may be fine "man shred" can tell you more. You can also use "cat /dev/random > /dev/devicename" as well.
I have looked at shred before asking, and it said:
The following are examples of file systems on which shred is not effective, or is not guaranteed to be effective in all file system modes:
- log-structured or journaled file systems, such as those supplied
with AIX and Solaris (and JFS, ReiserFS, XFS, Ext3, etc.)
That refers only to shreding files on those filesystems, not shreding the block devices.
So shred /dev/device doesn't care about the filesystem in it.
How secure is cat /dev/random > /dev/devicename ?
Unless you're willing to keep moving your mouse and/or typeing for a couple of days, I don't recomend that. :)
/dev/urandom is faster than random and doesn't block, but isn't that much faster. Also, it's a single pass, so I doubt it will be as safe as shred.
centos@911networks.com wrote:
Hi,
I have a dozen of drives, ranging from 10Gb to 200Gb. I want to wipe them clean before donating them. I have a IDE/SATA to USB converter that works. I can see the drives properly.
DBAN does not currently support external USB drive. Any other alternatives?
dban is actually a linux utility, I believe, normally run under a stripped uClinux/busybox environment. Id imagine you could put it on a 'liveCD' that -does- support USB disk
On 4/14/07, centos@911networks.com centos@911networks.com wrote:
Hi,
I have a dozen of drives, ranging from 10Gb to 200Gb. I want to wipe them clean before donating them. I have a IDE/SATA to USB converter that works. I can see the drives properly.
Ok depending on the type of data on the disks and the types of disks, you can do the following:
If the data on the drives was very sensitive data for your agency/company/etc.. the best methods are complete destruction of the drive. physically shredding the drive into 1 cm x 1 cm pieces is a good idea for size of shredding
If the drive was sensitive and people would spend 10,000 to try and recover.. destroy the disk.
If the drive was sensitive but nothing that people would spend more than $1000 to try and recover...
use an approved shredder by your companies lawyers.. The type of wipe normally does a complete wipe with binary 1's, 0's, 10's and 01's to try and make sure that magnetic resonance is not found.
If the drive was something that had data that people wouldnt spend more than 100 to try and recover..
dd if=/dev/zero of=/dev/drive bs=1024 <wait for it>
flash/memorystick drives cache various stuff and are usually cheaper to destroy than deal with unless the data is
DBAN does not currently support external USB drive. Any other alternatives?
-- Thanks http://www.911networks.com When the network has to work _______________________________________________ CentOS mailing list CentOS@centos.org http://lists.centos.org/mailman/listinfo/centos
centos@911networks.com wrote:
Hi,
I have a dozen of drives, ranging from 10Gb to 200Gb. I want to wipe them clean before donating them. I have a IDE/SATA to USB converter that works. I can see the drives properly.
DBAN does not currently support external USB drive. Any other alternatives?
Apart from all the other ideas I've seen here, you could check sf.net and freshmeat for alternatives.
-
Barry Brimer -
centos＠911networks.com -
John R Pierce -
John Summerfield -
Luciano Miguel Ferreira Rocha -
Stephen John Smoogen