[Voyage-linux] Duplicating CF

[mgrollman]

Robert,

To go from one identical sized cf card to another identical sized card, 
ideally same brand, with a hard disk file in the middle, and assuming 
the CF card was at /dev/hda and that the hard disk was being used as 
part of /var, I would do something like put the one you want to copy 
into the CF drive and:

dd /dev/hda /var/cf_images/cf_image-name.img ; this copies all the data, 
including boot track, to a file called cf_image-name.img in a dir called 
/var/cf_images/ that must already exist;

then swap the master for the blank in /dev/hda, and...

dd /var/cf_images/cf_image-name.img /dev/hda ; this takes the data from 
the file and puts it onto a blank cf card

Note, this may take a while, if the cf drive is slow and the cf size is 
large. It also does not work well if 2 different sizes of Cf card are 
used. Do not get this backward, of course, or you can wind up with 2 
blank CF cards, or worse, a blank hard disk !!!!!!!!!!!!!!!

Anyway, that's the way I always do it, if CF cards are the same.

Cheers,

- Michael

Robert Rawlins wrote:
>
> Hello Guys,
>
> At the moment with all the packages I install and changes I make to 
> the configuration of my systems the build time is quite lengthily from 
> start to finish.
>
> Is there any efficient and simple way to duplicate compact flash 
> cards? We’re not talking massive numbers so I want to avoid doing it 
> professionally, just something I can do here with my card readers 
> would be good. I want to be able to create one finished card and then 
> make multiple versions of the same thing.
>
> I have done this a long while back but found that we has problems with 
> networking when placing cards in different boards, it seemed to get 
> confused. I forget which method I used.
>
> I’m using grub boot loader if that makes any difference.
>
> I look forward to getting your suggestions guys,
>
> Robert
>
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