In my previous experience, zeroing the disk will result in smaller files for G4U but it will take awhile depending on many factors including the size of the disk, performance, etc..<div><br></div><div>Also, I recommend giving Clonezilla (<a href="http://clonezilla.org/">http://clonezilla.org/</a>) a try. It offers more options than G4U and is more efficient in my experience.</div>
<div><br></div><div>Matt<br clear="all"><br>--<br>Mathew S. McCarrell<br>Clarkson University '10<br><br><a href="mailto:mccarrms@gmail.com">mccarrms@gmail.com</a><br><a href="mailto:mccarrms@clarkson.edu">mccarrms@clarkson.edu</a><br>
<br><br><div class="gmail_quote">On Sun, Jun 7, 2009 at 12:34 PM, Rainer Duffner <span dir="ltr"><<a href="mailto:rainer@ultra-secure.de">rainer@ultra-secure.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">
<br>
Am 07.06.2009 um 18:22 schrieb Niki Kovacs:<br>
<div class="im"><br>
> Hi,<br>
><br>
> I'm currently experimenting with G4U (Ghost for Unix), a small cloning<br>
> application sending disk images to an FTP server.<br>
><br>
> The application reads the whole disk bit by bit, compresses it and<br>
> then<br>
> stores it remotely. Due to this approach, it's more or less<br>
> filesystem-independent. The drawback is that it sometimes results in<br>
> huge image files.<br>
><br>
> Now I'm currently following a hint which suggests to fill the disks'<br>
> unused space with zero bits. Here's the command for that:<br>
><br>
> # dd if=/dev/zero of=/0bits bs=20M<br>
> # rm /0bits<br>
<br>
<br>
<br>
</div>This will create a file that fills up the root-partition.<br>
If you have multiple partitions beyond that, it's not of much use.<br>
Ideally, the zero'ing of the disk should take place before the OS is<br>
installed, via a boot-cd and using dd with the disk-device itself<br>
<br>
All this made some sense when disks didn't come in sizes of 250GB<br>
upwards...<br>
If you get 20MB/s from your dd(1), it would take 1000 seconds to fill<br>
20 GB...<br>
<font color="#888888"><br>
<br>
<br>
<br>
<br>
Rainer<br>
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