Re: [ts-7000] Installing a Kernel on a CF

[Patrick Koehn <>]

Looks like I fell into the same trap my students do - following instructions blindly without actual thought.  'dd' did, as you say, exactly what I told it to do.  'cp' put it just where I wanted it.

PLK

On Thu, Apr 28, 2011 at 6:04 AM, Jim Jackson <> wrote:

 

On Wed, 27 Apr 2011, koehnp wrote:

> Another fine mess I've gotten myself into, Ollie...
>
> I have been a Linux user for a very long time, but only at the user level. I can install, compile, etc, but I've never worked with file systems much.
>
> I've been working on getting a new kernel built for my 7200, one that
> supports ham radio. I managed to build the kernel without errors by
> following the instructions at
> http://www.embeddedarm.com/about/resourccde.php?item=485 almost to the
> letter. The menu interface was a little different, but I managed.
>
> I followed the directions to copy the zImage file over to the CF card
> (at /dev/sdb1), dd if=arch/arm/boot/zImage of=/dev/sdb1, it seemed to
> copy. I unmounted the cf, popped it into the 7200 and fired it up.
> It failed with a kernel panic. I moved the CF back over to my
> development machine, and it seems that my dd blew away my entire
> filesystem on the CF.
>
> Any ideas as to what I did wrong? Thank you for any information!

yes, you used dd

dd copies byte-for-byte to /dev/sdb1, so it will screw over your file
system, just as you asked it to.

Why didn't you use "cp"?

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