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Thread: SanDisk card failure after deleting shots

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    SanDisk card failure after deleting shots

    I use class 10 SanDisk 8 gb cards. For more than two years I used just one of these cards in an M9 without problem. When the MM arrived I bought the same card. However, in two months I've had two cards fail, and both of these failures occurred immediately after I deleted some shots.

    I guess I will stop deleting shots within camera.
    Ed

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    Senior Member edwardkaraa's Avatar
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    Re: SanDisk card failure after deleting shots

    Ed, you better stop using Sandisk class 10 8GB cards. They are the most problematic by all accounts.

    I myself gave up on Sandisk altogether. I bought four Transcend 16GB class 10 and they all work flawlessly. I delete in the camera, review and magnify all the time while the camera is still writing. No problems.
    M262 ZM 25/2.8 35/1.4 50/2 85/2

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    Contributing Editor ustein's Avatar
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    Re: SanDisk card failure after deleting shots

    >I guess I will stop deleting shots within camera.

    I never do this. Can be too error prone anyway. I have always large enough cards with me.
    Uwe Steinmueller
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    Re: SanDisk card failure after deleting shots

    Weird. I use nothing BUT SanDisk cards. Never an issue with them, deleting images or otherwise. Though I usually only delete while shooting and get an obvious dud. If I'm cleaning up the card for the next outing - I just format (w/o overwrite).

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    Re: SanDisk card failure after deleting shots

    Quote Originally Posted by Double Negative View Post
    Weird. I use nothing BUT SanDisk cards. Never an issue with them, deleting images or otherwise. Though I usually only delete while shooting and get an obvious dud. If I'm cleaning up the card for the next outing - I just format (w/o overwrite).
    I've read that formatting the cards in-camera or, especially, in a computer, causes more problems than simply deleting the files in-camera.

    Anyone out there have a definitive answer?

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    Re: SanDisk card failure after deleting shots

    Quote Originally Posted by Maggie O View Post
    I've read that formatting the cards in-camera or, especially, in a computer, causes more problems than simply deleting the files in-camera.

    Anyone out there have a definitive answer?
    FWIW, I always format in-camera.
    Ed

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    Re: SanDisk card failure after deleting shots

    Quote Originally Posted by erudolph View Post
    FWIW, I always format in-camera.
    As do I, but I do it once and then just do a mass delete after moving files to working and backup drives.

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    Contributing Editor ustein's Avatar
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    Re: SanDisk card failure after deleting shots

    >FWIW, I always format in-camera.

    +1 and use most of the time SanDisk SD cards.
    Uwe Steinmueller
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    Re: SanDisk card failure after deleting shots

    Quote Originally Posted by Maggie O View Post
    I've read that formatting the cards in-camera or, especially, in a computer, causes more problems than simply deleting the files in-camera.

    Anyone out there have a definitive answer?
    Format vs delete is pretty much the same result in that the directory is cleared, but I habitually format every time I start a new shoot and have done so for years.
    So far I have had no trouble ever with this procedure.
    Oh and I have used SanDisk exclusively for the last several years, but always their fastest but not necessarily their largest models.
    -bob
    Last edited by Bob; 22nd December 2012 at 13:57.

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    Re: SanDisk card failure after deleting shots

    It has always been a good practice not to delete images off the card in an important shoot. You also want to format in camera like Bob suggested as well.

    I don't know why it can cause problems, perhaps if you delete when the buffer is still writing.

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    Re: SanDisk card failure after deleting shots

    I only delete after moving files into Aperture and onto backup drives. I've got 32G cards, so there's no need to delete whilst shooting.

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    Contributing Editor ustein's Avatar
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    Re: SanDisk card failure after deleting shots

    >I don't know why it can cause problems

    Delete is a more complicated operation as it has to change the FAT (file allocation table). Format just clears it.
    Uwe Steinmueller
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    Re: SanDisk card failure after deleting shots

    Formatting in camera is the ideal method for flash storage for a variety of reasons.

    One good run down of why which lightly touches on wear leveling. Newer cards I think have this built-in, so it's less of a concern than it used to be? At least SSDs do (TRIM).

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    Re: SanDisk card failure after deleting shots

    I use el cheapo Duracell ones and they are fine

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