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Support MicroSD in Mass Storage Mode gets disconnected during data transfer

Discussion in 'Android Devices' started by marin99, Nov 27, 2012.

  1. marin99

    marin99 Lurker
    Thread Starter
    Nov 27, 2012

    Nov 27, 2012

    I have a 32GB MicroSD in my My Razr M/XT 907. The phone is connected to my Windows XP (SP3) laptop. The MicroSD is formatted with FAT32 and is recognized by the laptop. The MicroSD contains 15 large files (~2GB in size).

    I am running an application on the laptop that reads heavily from several large files on the microsd for about 10 minutes with a random access pattern. Then the application writes to the large files on the microsd for about 3 minutes with a random access pattern. Once the large files on the microsd have been updated the application starts all over again with the read cycle.

    Problem is that after a few cycles the MicroSD gets disconnected. Windows explorer shows an empty drive and a message appears indicating that the drive has been disconnected. After reconnecting the device all files are again visible from the laptop.

    So far I have tried the following:

    1. Tried different cables, one of them as short as 13'' -> no effect

    2. Connected the microsd card (Samsung, class 10 32GB) through a card reader -> problem did not appear

    3. Tried a different microsd (Lexar, class 10 32GB) -> same issue

    4. Tried the Lexar microsd with a card reader that is directly attached -> problem did not appear

    5. Tried a different phone (Motorola Atrix, MB860) -> same problem

    Could this be a thermal issue where the MicroSD overheats and gets 'shut down' by Android? Any other idea?

    Thank you


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