How to completely erase a hard disk

Juan Pablo Mazzini jpmfoto at
Sun Sep 30 18:12:23 UTC 2007

I know that there must be a less extreme solution but , since there  
is nothing installed on that server the zero all data seems to be the  
fastest one to get on my way again. THANKS A LOT FOR YOUR ANSWER!

El 30/09/2007, a las 14:32, Rashkae escribió:

> Juan Pablo Mazzini wrote:
>> I`ve made a mistake instaling an Ubuntu 7 server with RAID disk 1.
>> Now when i try to install again de instaler is unable to make a new
>> raid cause the old one is still configured somewhere, anyone knows a
>> metod taht i can use to put both hard disk in like new and erase all
>> the information stored in them including the booth sector in order to
>> install again.
> This might be a bit extreme to your particular situation (which  
> could be
> worked around with a bit of finesse and finer grained understanding of
> Raid and it's relative command line tools)
> But to simply answer your question and get you on your way, boot  
> from a
> Live CD (I suggest Knoppix for stuff like this, though there is no
> reason you can't use Ubuntu install CD), identify the hard drive  
> device
> you want to erase (Like /dev/hda or /dev/sda)...   If there are  
> multiple
> hard drives, I suggest eliminating any chance of error by  
> disconnecting
> the ones you do not want to erase.
> Then dd if=/dev/zero of=/dev/hda (or dd if=/dev/zero of=/dev/sda)
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