===== Read-Only SD Card =====
Change your SD card to a read-only mode.\\
[[http://raspberrypi.stackexchange.com/questions/5112/running-on-read-only-sd-card]]\\
[[https://web.archive.org/web/20150101110424/http://raspberrycenter.de/forum/umruestung-raspberry-pi-read-only-root-filesystem]]\\

==== Fstab ====
in:
  $ sudo nano /etc/fstab
change:
  /dev/mmcblk0p2  /               ext4    defaults,noatime,ro  0       1
  tmpfs           /tmp            tmpfs   defaults,size=30M    0       0

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==== Disable some Programms ====
disable rsyslog and dphys-swapfile:\\

**Wheesy:**\\
  $ sudo update-rc.d -f rsyslog remove
  $ sudo update-rc.d -f dphys-swapfile remove
**Jessie:**\\
  $ sudo systemctl disable rsyslog
  $ sudo systemctl disable dphys-swapfile

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==== Remount ====
To remount the partition writabe:\\
  $ sudo mount / -o remount,rw

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