Damaged SD Card

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Damaged SD Card
« on: 01 / September / 2017, 12:36:32 »
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Hello,

I started to get damaged some SD cards. After, contact the supplier support, he answer me that this must be caused because i formatted the SD cards.

I use the CardTricks to format and update the CHDK.

So, i want your opinion, do this can happen? Format can damage SD cards?

PS: Sorry my bad English.

Re: Damaged SD Card
« Reply #1 on: 01 / September / 2017, 13:05:27 »
I have several "dead" SD cards that I have collected while using CHDK.  I can read/write to them but I cannot reformat them with any of the various tools I use. I'm not too sure how I did that but I'm assuming that it was related to formatting issues.

I would strongly recommend NOT using CardTricks.  It's a very old utility and does not correctly format cards for newer cameras (i.e. cameras released after the year 2010).

A better tool that works on Linux, Windows, or Macs is  : STICK

If you are a Windows user, this tool is also very nice : CHIMP
Ported :   A1200    SD940   G10    Powershot N    G16

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Offline Ant

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Re: Damaged SD Card
« Reply #2 on: 01 / September / 2017, 14:17:14 »
I can read/write to them but I cannot reformat them with any of the various tools I use. I'm not too sure how I did that but I'm assuming that it was related to formatting issues.

I had similar troubles with installing CHDK on some my cards using EOScard. Filling by zeros the first megabyte(or gigabyte) of cardspace before reformating usually was helpfull.

Re: Damaged SD Card
« Reply #3 on: 01 / September / 2017, 20:48:10 »
I started to get damaged some SD cards.
After, contact the supplier support, he answer me that this must be caused because i formatted the SD cards.
So, i want your opinion, do this can happen? Format can damage SD cards?
There are several SD Card reliability problems, based upon long term use of more than 200 SD cards:-
a/ The Older low capacity SD cards can have a significant failure rate of about 5%.
b/ New high capacity can totally fail shortly after first use may be about 2%.     

Examples:-
A 32Gb Lexar will only now format to less than a Gigabyte.
A 8gb SanDisk  Extreme refuses to format.
Other hardware and software related failures are described below.

If you use windows (10) some (of my) SanDisk USB and SD cards will often show a Windows format error
if hot-plugged, even repeatedly, but work perfectly if cold-plugged.
This is probably due to a USB software or hardware problem.

Windows will write additional and un-necessary "DOS-Data" so use your camera to low-level format.

Also I have a cheap USB-2 card reader that partially, and permanently, destroyed a SD card.
And an Expensive USB-3 card reader that some time won't work with USB-2.

EOSCard 1.4 has a bug and will show different results if the boot flag is then (re) set using the
CHDK in camera method.

H-H

Also Older and legacy Canon Canon Cameras have a significant failure rate of about 2%.
The Newer Canon Canon Cameras soured on ebay also can have very strange faults.
The most common is dropping a camera, even in a well padded bag, can damage cameras.
This might explain the bricking of a ixus 160 (???).
« Last Edit: 01 / September / 2017, 21:06:25 by Hardware_Hacker »


 

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