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I am using the Occidentalis distro and stupidly ran apt-get upgrade without thinking about the repercussions. After a reboot I now am on a stock kernel, which means I lost kernel support for OneWire, which was my reason for using Occidentalis.

Is there any way for me to undo what I did, short of reimaging the SD card?

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    Does your kernel still exist? It should be in /boot/ and the headers in /usr/src/. Show us the output of ls in those two directories?
    – Jivings
    Commented Sep 28, 2012 at 6:02
  • Check out this question.
    – xxmbabanexx
    Commented Apr 2, 2013 at 1:07
  • Try out Jiving's suggestion by running ls /boot/ && ls /usr/src/ and posting the results. That will give us a better chance of giving you an answer.
    – RPiAwesomeness
    Commented Mar 23, 2014 at 20:01

1 Answer 1

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You could mount the SD Image under Linux using sudo mount -o loop occidentalis.img /mnt/sd (the directory /mnt/sd must exist.) Then cd to /mnt/sd/boot/ and do sudo cp kernel.img /boot/kernel.img

Reboot and 1-wire support will be enabled.

This may not be necessary however. Newer versions of Raspbian (which you now have as you updated the system) there is a kernel module called w1-gpio. Put this in your /etc/modules. You will also want to add w1-therm if you use a 1 wire temperature sensor such as a DS18x20.

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