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Thread: SD Card Problem

  1. #1
    Axel Hildebrandt
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    Default SD Card Problem

    One of my memory cards is a 8GB SD card for my 1D3. I don't know what happened but all of a sudden I can't delete images in Bridge with the card in a card reader (I can delete images on CF cards). It works in-camera and if I copy the files onto the hard drive. I'm using a Mac and in Finder it says 'read only'. How do I change the permission to read and write? It seems to be grayed out. I'm using Leopard as OS. Thanks!

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    Wish I could help. On a PC I could give some advice but not on a Mac. There will be an easy answer

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    I'm not a mac use either, but if I remember correctly, there is a way to "lock" images on the camera so they can't be erased. Perhaps you did that setting on the camera? Just something to check.
    I remember I have accidentally locked a single image on my 1D2, although not a whole card.

  4. #4
    robert hazelwood
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    I don't know what you might have done, but ram memory can ocassionally get locked up. If you can download the files, do that then reformat the card in the camera.

    You are asking for problems whenever you try and delete files with the card plugged into the computer. Most reformats in camera check for problem cells and will lock them out. In camera deletes will usually not do that. First step if you have a problem card is to reformat it in the camera.

    Hope this helps.

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    Quote Originally Posted by robert hazelwood View Post
    I don't know what you might have done, but ram memory can ocassionally get locked up. If you can download the files, do that then reformat the card in the camera.

    You are asking for problems whenever you try and delete files with the card plugged into the computer. Most reformats in camera check for problem cells and will lock them out. In camera deletes will usually not do that. First step if you have a problem card is to reformat it in the camera.

    Hope this helps.
    Hey, well, that can lead to other problems: some reformatted cards are slower in some cameras:
    http://www.clarkvision.com/imagedeta...ash_card_speed
    This is not the case with all cameras (apparently) but is with every one I have tested. In the case of sandisk Extreme IV UDMA cards, after going round and round with Sandisk, they finally sent me a diagnostic program for which I ran on both original format and camera formatted cards and it showed the card was slower. Sandisk agreed and agreed to replace the card. They said they would send me the secret code to return the card and get a new one, but I have been waiting 3 months now. But that wasn't the real problem anyway and I have still to find out the difference in the formats that cause this slow-down.

  6. #6
    BPN Member Kerry Perkins's Avatar
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    Axel,

    I have not upgraded to Leopard, but I think it works the same as Tiger (which I use) in this respect. You have to be logged in as an adminstrator to do this.

    With the volume mounted on the desktop, right click on it (control click). In the drop-down menu that pops up select "Get Info". At the bottom of the info window you will see "Ownership & Permissions". Click that triangle to expand the menu and then do the same thing for "Details:". To the right of the field that says "Owner:", there will be an icon of a lock. If it is unlocked, you can change the permissions in the "Owner:" field, if it is locked, just click on it and it will unlock.

  7. #7
    Axel Hildebrandt
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    Thanks for the replies. I did format it in-camera but that didn't make a difference, either. If I remember correctly, it started after upgrading the camera firmware on my 1D3.

    Kerry, I looked at 'get info' but weirdly enough, there is no lock as normal. There is a lock when I open 'get info' for the HD and I'm logged in as administrator. In Finder there is a crossed pencil in the lower left. I'm not sure how to 'uncross' it. Any ideas? Thanks!

  8. #8
    Axel Hildebrandt
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    Thanks, Peter! I will give that a try when I get home.

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    Axel,
    Be careful, a rm -r command is recursive remove, removing the directory and all sub directories and files below it!

    So in the command sequence above I would add:
    cd /Volumes/EOS_DIGITAL
    pwd
    rm -r MISC
    rm -r DCIM
    rm -r .Trashes
    rm -r .fseventsd

    If the pwd (print working directory) is not the same as what you thought you cd'd to, then don't issue the rm commands. If you made a tiny mistake in the first cd command and didn't actually cd to the directory, then you are removing from the current directory, and if it has a directory named MISC you will remove it.

    Also to see the directories and files beginning with "." run the command:
    ls -la
    (list long, all)

  10. #10
    Axel Hildebrandt
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    After changing to cd /Volumes/EOS_DIGITAL in Terminal, return, then pwd, return and rm -r MISC return, I get the following message: override rwxrwxrwx ahildebr/staff for MISC? When I hit return or Y I get the message: rm: MISC: Read-only file system
    and it does not delete the folder. Am I missing something?

  11. #11
    Axel Hildebrandt
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    Not that I know of and I can delete them in-camera.

  12. #12
    Axel Hildebrandt
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    Quote Originally Posted by Peter Kes View Post
    Axel, can you enter the 'mount' command and provide the output ?
    Here it is:

    /dev/disk0s2 on / (hfs, local, journaled)
    devfs on /dev (devfs, local)
    fdesc on /dev (fdesc, union)
    map -hosts on /net (autofs, automounted)
    map auto_home on /home (autofs, automounted)
    /dev/disk1s2 on /Volumes/ahildebr (hfs, local, nodev, nosuid, journaled, noowners, mounted by ahildebr)
    /dev/disk2s1 on /Volumes/EOS_DIGITAL (msdos, local, nodev, nosuid, read-only, noowners)

  13. #13
    Axel Hildebrandt
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    When I go to Disk Utility and click on EOS_DIGITAL, 'repair disk permissions' is grayed out. Thanks for your patience, BTW. :)

  14. #14
    BPN Member Kerry Perkins's Avatar
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    Sorry Axel, but I don't have a ready answer. I will dig some more though...

  15. #15
    Axel Hildebrandt
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    And now the embarrassing part: These SD cards have a tiny switch on the side that I simply overlooked and of course it was in the lock position. I feel really smart right now. :)

    It is pretty easy to accidentally switch to lock just by putting the card in the reader, just in case anybody else is using this kind of card.

    Thanks for all your help!

  16. #16
    BPN Member Kerry Perkins's Avatar
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    All's well that ends well!

  17. #17
    Alfred Forns
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    .... and they call them "smart digital" :)

  18. #18
    Axel Hildebrandt
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    Quote Originally Posted by Alfred Forns View Post
    .... and they call them "smart digital" :)
    They should be called SM for 'smart mechanical'. :)

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