[lug] question about dd

[Steve Casal]

Thanks for your help. I'm aware of the issues you raised but I plan on  
creating EVERY sector that will go on the disk. To be more specific, I won't 
be using a known filesystem. This is a proprietary filesystem that I'm 
making. I guess what I really want is your command with the file and hd 
reversed ... kind of like this:

dd if=file of=/dev/hd<n>

The question I was having is if I need any other command line options and 
from the looks of things I may not. The other quesiton is, can I just create 
a binary file that contains a byte for each available byte on the disk and 
they use the dd command above?

Thanks for your help.

Steve



>From: David Trowbridge <jupiter at flatirons.org>
>Reply-To: lug at lug.boulder.co.us
>To: <lug at lug.boulder.co.us>
>Subject: Re: [lug] question about dd
>Date: Sun, 6 May 2001 10:21:46 -0600 (MDT)
>
>This is fiarly simple, but there are a couple issues I'd like to raise:
>first, the command to do this is:
>dd if=/dev/hd<n> of=file
>
>The problems with this is that it will copy everything - partition tables,
>disk sizes, etc, so if you use your image to write a drive that is not
>exactly the same size, it will not fill up the disk completely, and may
>not even work at all.
>
>-David
>
>-------------------
>David Trowbridge
>jupiter at flatirons.org
>http://jupiter.babylonia.flatirons.org
>
>"Base 8 is just like base 10 really...if you're missing two fingers"
>	-Tom Lehrer
>
>On Sun, 6 May 2001, Steve Casal wrote:
>
> > Hi,
> >     I would like to create a file that's an image of exactly what I want 
>on
> > a given hard disk. In other words I want to specify the exact contents 
>of
> > each sector of the given drive. I would think that I should be able to
> > create some kind of file that can act as an "image" of the drive and 
>then
> > use dd to get this so called image on the drive. Unfortunately, I'm not 
>very
> > familiar with dd and have never done anything like this before. I'm 
>hoping
> > someone can give me an idea of how to accomplish this.
> >
> > Steve
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