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Old 04-09-2008, 06:57 AM   #1
rehan999
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Unhappy sanitizing the linux machine


Good Morning

I have a machine Dell Model 690 workstation which is installed with RHEL 4.3 i want to sell it.

Before selling i want to sanitize the machine,

Can any one help me how to sanitize the machine which is installed with linux.

Waiting for the reply..

Thanks and regards
Rehan
 
Old 04-09-2008, 07:40 AM   #2
brianmcgee
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If you want to wipe all contents from disk so that your sensitive data cannot be restored, you may try the following command from a bootcd (e.g. Knoppix):

Code:
# dd if=/dev/random of=/dev/yourharddiskdevice
This will fill the drive with pseudorandom data. Faster will be zeroing the disk:

Code:
# dd if=/dev/zero of=/dev/yourharddiskdevice
There are also special bootdisks for wiping disks: http://dban.sourceforge.net/
 
Old 04-09-2008, 07:44 AM   #3
rehan999
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Thanks for your mail...

What is this Knoppix where can i get it?
 
Old 04-09-2008, 07:48 AM   #4
matthewg42
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Also check out DBAN - Darik's Boot And Nuke. This is a small, bootable CD image which contains software for securely wiping the hard disk. Once you've done that, you can re-install the OS if you want to provide one to th recipient of the sale, or leave the disk blank if you prefer.
 
Old 04-09-2008, 09:34 AM   #5
CrashedAgain
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Quote:
Originally Posted by rehan999 View Post
Thanks for your mail...

What is this Knoppix where can i get it?
Knoppix is a complete Linux system that with run from a CD.

http://www.knoppix.org/
 
Old 04-13-2008, 04:59 AM   #6
rehan999
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Thanks for replying

I went to the link http://www.knoppix.org/

it is in different language nad i see their are so many links inside it..

I am confused can you please tell me which link should i need to download.

Waiting for your reply

Thanks and Regards
rehan
 
Old 04-13-2008, 05:11 AM   #7
SqdnGuns
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Quote:
Originally Posted by rehan999 View Post
Thanks for replying

I went to the link http://www.knoppix.org/

it is in different language nad i see their are so many links inside it..

I am confused can you please tell me which link should i need to download.

Waiting for your reply

Thanks and Regards
rehan
Just click on the US/UK flag near the top left for English, when page refreshes, select download.
 
Old 04-13-2008, 06:09 AM   #8
rehan999
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When i go to the page http://knopper.net/knoppix-mirrors/index-en.html
I found so many download links
one of the is mentioned below.

ftp.uni-kl.de [rsync][rsync dvd] [ftp] [http] Technische Universität Kaiserslautern *)

When i click on ftp for the above line it is giving me the error page not found.

Please tell me which is the accurated link for knoppix download.
And what is the size of the download file.


please....

Waiting for your reply

Thanks and Regards
Rehan
 
Old 04-13-2008, 07:34 AM   #9
dasy2k1
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any of the ftp or http links is the correct link as they are all mirrors of the same download (to spread load across many servers), simply choose one where the country in brackets at the end of the right hand column is close to your physical location
eg as im in the uk i would use UK Mirror Service - University Of Kent (England)

whether its http or ftp dousent make much difference to me.
when you click on the link you get 2 folders,
knoppix or DVD.

if you want a cd image click knoppix if you want a DVD image click dvd (a lot bigger but more stuff on it) for what you need in this thread CD will be fine.
KNOPPIX_V5.1.0CD-2006-12-30-EN.iso is the file you want and is approx 700MB

(the EN is engish, the DE version is in german)
 
Old 04-13-2008, 11:33 PM   #10
rehan999
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I have downloaded the version
KNOPPIX_V5.1.0CD-2006-12-30-EN.iso, but it the file of only 23MB

I tried twice but it is downloading only 23MB.

I burned it in the cd and rebooted the machnie and booted it from the cdrom but it is not able to boot.

can i directly use the command
# dd if=/dev/zero of=/dev/yourharddiskdevice

Without booting it from the Cdrom..


Please help me out.
 
Old 04-13-2008, 11:42 PM   #11
lazlow
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How much space do you have available on the drive. The iso is just short of 700mb.
 
Old 04-14-2008, 12:27 AM   #12
rehan999
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I am using DBAN - Darik's Boot And Nuke

I downloaded it sucessfully and burned it in a CD.

After rebooting if from the CD it s asking me few Questions

Press F1 for this
press f2 for this

At the boot: prompt i used the dod command but it is taking lot of time.

Is their any shortcut command with which i can sanatize the machine using the above software.


Thanks and Regards
Rehan
 
Old 04-14-2008, 01:24 AM   #13
rehan999
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I have used the commands given by the DBAN sofware

When i press f3 key it gives some commands like dod, quick,noverify....etc

I tried all the commands it is giving me the same errors mentioned below.

DBAN finished with Non-fatal errors
This is usually caused by the disks with bad sectors send the log file with all support requests

Hardware clock operation start date XXXXXXX
Hardware clock operation finish date XXXXXXX

Saving log file to floppy disk......a floppy disk in DOS format was not found.
DBAN finished.Press ENTER to save the log file.


i took out the CD and booted the machnie from the harddisk i see all the data, nothing has been wiped off..

PLease help me how to do use this CD.

Waiting for your reply.

Thanks and Regards
Rehan
 
Old 04-14-2008, 11:26 PM   #14
rehan999
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Good MOrning ALL.

I have successfully download the knoppix software
KNOPPIX_V5.1.0CD-2006-12-30-EN.iso

I burned the software in a CD.

When i reboot the Dell 690 Linux machnie form the cd it gave me the boot prompt and i pressed enter.

after pressing enter i got the screen same like kde login screen.

Now can any one please tell me what should i do after booting from the CDROm.


How should i santize the machnie?

PLease send me the procedure.

Waiting for your replies..

And thanks to all for replying to my theard.
 
Old 04-15-2008, 12:23 AM   #15
rehan999
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Quote:
If you want to wipe all contents from disk so that your sensitive data cannot be restored, you may try the following command from a bootcd (e.g. Knoppix):


Code:
# dd if=/dev/random of=/dev/yourharddiskdeviceThis will fill the drive with pseudorandom data. Faster will be zeroing the disk:


Code:
# dd if=/dev/zero of=/dev/yourharddiskdeviceThere are also special bootdisks for wiping disks: http://dban.sourceforge.net/
Non of the above command is working.
 
  


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