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Canon S5 IS can't read any other sd-card as a chdk-sd-card

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Canon S5 IS can't read any other sd-card as a chdk-sd-card
« on: 29 / August / 2015, 11:09:06 »
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Hello!

I've used my Canon S5 IS with lot's of pleasure. Recently i've sold it. This thing has come to light: the only sd-card the camera read, and works is the card with the chdk on it. All other card show as locked even if the lock switch is in the unlocked postition

Does anyone have any idea how to fix this so the camera will read any card?

Thanks in advance!

Canon S5 IS
CHDK version 0.9.9-913
Firmware 101b
Compiler GCC 4.4.3

SD-card (with chdk): Kingston 8Gb SDHC

Bart
« Last Edit: 29 / August / 2015, 11:11:13 by bvswam »

Re: Canon S5 IS can't read any other sd-card as a chdk-sd-card
« Reply #1 on: 29 / August / 2015, 11:40:24 »
The "Card Lock" mechanism in Canon Powershot cameras is a simple switch located at the side of the SD card slot within the camera.  The position of the switch is set by being pressed by the little card lock slide mechanism on the side of the SD card.   It's all mechanical - there is no electrical interlock.

The magic of CHDK being able to autoboot is that CHDK "masks" off the I/O bit associated with that mechanical switch such that the Canon firmware never sees the switch as being in the "locked" position.  That's why CHDK enabled SD cards work for you and ordinary SD cards do not.

So if your camera will only run with CHDK enabled cards,  the switch is probably jammed / broken.  You might be able to free it up with a toothpick and a lot of careful probing inside the SD card slot of the camera.
Ported :   A1200    SD940   G10    Powershot N    G16

 

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