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I want to maximize the lifespan of my SD card as long as possible, the Pi is looking at a everyday 10h use for several years to come. Now I would like to have the boot partition to be writable to be able to alter some config files my application uses but I've seen a few guides regarding a read-only systems, also making the boot partition read-only. Does that have any reason other than security or is the system writing anything on this partition except for firmware updates.

  • Maybe you could save your self some time and use a ram disk system like TinyCoreLinux with on demand persistence already included? tinycorelinux.net/ports.html – avra Sep 30 '14 at 7:53
  • Sounds interesting but Raspbian is an absolute must for this project. – PTS Sep 30 '14 at 20:15
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    Then use "IPE – Industrial Perennial Environment R1". That is a Raspbian tailored to survive unexpected power downs. You can find it here: nutcom.hu/ipe-r1 – avra Oct 2 '14 at 8:32
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The system will not write to the boot partition unless you ask it to by editing a boot configuration file (config.txt, cmdline.txt) or by updating the firmware.

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