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  1. #1
    SD card files getting deleted!

    Member Since
    Oct 19, 2011
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    6
    SD card files getting deleted!
    Hey guys, new Mac user here. I'm running a new MBA 13" with Lion 10.7.1 installed. Since the SSD is only 128GB, I'm using a SD card for all my mp3's, which are all loaded into iTunes. The SD card is formatted as exFAT, which was done in Lion.

    Well, to my complete bewilderment, I've noticed that those mp3s are getting deleted, seemingly at random. Yesterday I checked the card, and the mp3 directory existed, but everything under it was gone. Just completely gone. Last night I spent 4 hours transferring my mp3s back over to it, setting up new directories, etc. Today, I check again, and about 3GB is missing again.

    Anyone have any idea what's going on? I'm about to pull my hair out! Could this be the SD card, or is it a Mac/software thing?

    Thanks!

  2. #2
    SD card files getting deleted!

    Member Since
    Oct 19, 2011
    Posts
    6
    A quick note.

    When I go into Disk Utility and do a "verify disk" on the SD card, it finds a TON of problems and asks me to repair the disk. When I do that, it "fixes" everything and then leaves the card completely blank. Something about unexpected files and directories.

    Maybe I should format it as a Mac OS Extended partition next time?

  3. #3
    SD card files getting deleted!
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
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    45,183
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    Anytime you use FAT, whether it be FAT-16, FAT-32, or even exFat, there is a limit to the number of entries which can be stored in the root directory. Once you exceed that number, the system will start deleting the excess. Either format the SD card to HFS+ or NTFS. HFS+ will be best in your situation.

  4. #4
    SD card files getting deleted!

    Member Since
    Oct 19, 2011
    Posts
    6
    Thanks for the tip!

    The strange thing is that the mp3s weren't in the SD card's root directory. They were in a subdirectory called mp3. Does that matter?

    In any case, I reformatted the card as HFS+.

  5. #5
    SD card files getting deleted!
    chscag's Avatar
    Member Since
    Jan 23, 2008
    Location
    Fort Worth, Texas
    Posts
    45,183
    Specs:
    27" iMac i5, 3.2 GHz, iPad 3, iPhone 5c, iPhone 6+, 3 iPods, Yosemite
    Yes, the same limit goes for sub directories also. FAT can hold just so much data before it starts deleting the excess. HFS is better since it's also journaled which means less chance of data loss.

  6. #6
    SD card files getting deleted!

    Member Since
    Oct 19, 2011
    Posts
    6
    Cool, thanks. It does seem to be holding on to the files now.

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