OMG - fastest reply ever. Thank you so much Robert. I thought I tried 
updating the kernel. What I did:
wget https://rcn-ee.net/deb/sid-armhf/v3.8.13-bone60/install-me.sh
chmod +x install-me.sh
sudo ./install-me.sh
sudo reboot

But apparently this is not how its being done. Is there a howto for newbie 
somewhere...? Where did I go wrong?

Thanks again!


On Tuesday, July 22, 2014 9:16:33 PM UTC+2, RobertCNelson wrote:
>
> On Tue, Jul 22, 2014 at 2:07 PM,  <[email protected] <javascript:>> 
> wrote: 
> > Hello 
> > 
> > I am trying to encrypt a USB drive using the BBB and Debian wheezy 
> (Kernel 
> > 3.8.13-bone20). 
> > 
> > So the command I try is: 
> > cryptsetup --verbose --verify-passphrase luksFormat /dev/sda1 
> > 
> > However I get the following errors: 
> > Failure to communicate with kernel device-mapper driver. 
> > Check that device-mapper is available in the kernel. 
> > Cannot initialize device-mapper. Is dm_mod kernel module loaded? 
> > Command failed with code 38: Cannot initialize device-mapper. Is dm_mod 
> > kernel module loaded? 
> > 
> > As far as my limited Linux knowledge tells me, the respective kernel 
> modules 
> > are not part of my kernel. Is that correct? Is there an easy way to make 
> > this work? Or do you see alternatives to encrypt USB drives? 
>
> So... 3.8.13-bone20 was released on May 28, 2013.. I enabled dm_mod 
> support in 3.8.13-bone22 (on Jun 20, 2013).. 
>
> We are currently shipping 3.8.13-bone60.. 
>
> You should really upgrade. 
>
> Regards, 
>
> -- 
> Robert Nelson 
> http://www.rcn-ee.com/ 
>

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