dd and file compression experience

[scott-DPNOqEs/LNQ at public.gmane.org (Scott Ehrlich)]

Don't you just love people who follow up their own posts, and top post, 
too!

Anyway, the problem I discovered with split not working for me was it 
didn't seem to like operating on a mounted cifs volume.   But copying the 
17 GB file to the local CentOS box and running split locally did the 
trick.

Now, off to burn DVDs!

Scott

On Fri, 6 Jul 2007, Scott Ehrlich wrote:

> I just wanted to provide results of a recent experiment.
>
> I had a new system configured as 50/50 dual-boot (XP Pro and CentOS 5).
>
> A ghost image of XP Pro with high compression resulted in three 2 Gig files 
> plus a little left over.
>
> Ghost can't handle the CentOS stuff at all, so I opted for a dd of the drive. 
> I used a Knoppix 5.1.1 CD, mounted a Windows box with a shared folder, and 
> ran dd if=/dev/sda|gzip > /mnt/shared_folder
>
> When done, the file size was just 18 GB!   I was very happy.  I do believe a 
> successful aid was, as was mentioned here before, cleaning out /tmp then 
> running dd if=/dev/zero of=/tmp/foo then deleting /tmp/foo.
>
> Thanks to all.
>
> Now fighting split to break the file into 4 GB chunks to place onto DVD!
>
> Scott
>
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