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Old 03-08-2006, 03:21 PM   #16
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dd if=/dev/zero of=/dev/[drive]
If you do go about wiping a drive to get rid of sensetive data, you don't want to write zero's to the disk. You want random data. Instead of /dev/zero, you would use /dev/random . If it were zeros or a predictable pattern, the old data can be recovered/stolen. Also you would want to do it several times.

dd if=/dev/zero of=/dev/[drive] && dd if=/dev/zero of=/dev/[drive] && dd if=/dev/zero of=/dev/[drive] && ....

You get the idea. I usually 3 times over will keep anybody from recovering your data, but at one point I read that the CIA/NSA types could recover something overwritten as much as 17 times, which is mind boggling.
Old 03-08-2006, 09:28 PM   #17
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You're right, random would be more secure. But its a really old machine and he said in an earlier post that it had just been rebooted. The entropy pool would quickly be empty. I'm not sure, but I think dd would stop running at that point. Someone would have to sit there and move the mouse around. I would think 3 or 4 passes with zeroes would be sufficient for their needs.
Old 03-09-2006, 04:28 AM   #18
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I liked the idea of the Darick's Disk but with time short I ended up using the ARC NT Boot Disk, worked fine.

I will try and get the PPC Live CD and Nuke disk working this morning but if I can not get it doen by the end of the day then that is it I am afraid. Thanks for the PPC Live idea, my knowlege here is limited and this is the kind of help I need (step by step guide).

Yes 1/2Gb of Ram and it looks like 2 x 4G SCSI hard disks. If this is usful to anyone then they can collect if not it will all be recycled. There is also a number of line printers, one is a massive parrallel thing and is really quick and lots of old Wyse terminals.

Thanks to eveyone for their help and being so friendly. I did try and get into Linux some years back but the forum I was on then was very unkind to new comers - should have come here.

I will check in later and update if I get the above to work.



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