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  • Mac USB problems

    I have a Macbook Pro running Snow Leopard that seems to have issues with thumb drives.

    Twice now, I've had the system lock up after trying to force an dismount of a thumb drive. The system tells me (for 2 hours) that the drive cannot be unmounted, and I finally chose to force it. After doing this, the system became unstable and would not respond (spinning beach-ball every time I tried to do anything) forcing me to do a hard-shutdown to recover.

    Just now, I used a borrowed thumb drive (shhhh, don't tell) and the system mounted it multiple times. There were drive icons spread most of the way across my desktop. The drive does not have multiple partitions. Trying to get the system to unmount the drive was fruitless, as when one icon would go away, another would take it's place. I finally pulled the drive, causing the system to crash. I have the crash report minimized to my dock for when I get to a location with internet (probably back home) to send it.

    With the first drive, I used the Disk Utility to verify the drive, and it seemed to fix problems both times. With the borrowed disk, all I did was check it under windows (the drive belongs to one of the companies techs, and we mostly use PC's) and it checked out fine.

    At any rate, is there something I should check, or do in this case?

    So far, other than a screw that likes to wiggle loose every once in a while, I've had no problems with it. This one bug has gotten me puzzled.


    Eric the Grey
    In memory of Dena - Don't Drink and Drive

  • #2
    Any other USB devices you can plug in to check if it's the way it handles ALL USB devices, or just flash drives? After all, if it's going wonky when you plug in a mouse, then you've got it narrowed down to the ports and things to do with the ports. If it's just drives, then it's probably file tables, or mounting procedures, or something waaaaaaaaaaaaaay over my head.
    Ba'al: I'm a god. Gods are all-knowing.

    http://unrelatedcaptions.com/45147

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    • #3
      Quoth Broomjockey View Post
      Any other USB devices you can plug in to check if it's the way it handles ALL USB devices, or just flash drives? After all, if it's going wonky when you plug in a mouse, then you've got it narrowed down to the ports and things to do with the ports. If it's just drives, then it's probably file tables, or mounting procedures, or something waaaaaaaaaaaaaay over my head.
      It's happened on multiple ports, so I'm hesitant to think that's the problem.

      I don't see any issues with the mouse, but then, I don't eject the mouse, I just unplug it.

      I've also not seen this issue with a real hard drive, but then I haven't used one since before this first happened. I plan to run a fresh backup on it this week. We'll see how that goes.



      Eric the Grey
      In memory of Dena - Don't Drink and Drive

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      • #4
        Quoth Eric the Grey View Post
        It's happened on multiple ports, so I'm hesitant to think that's the problem.
        Actually, I was talking about maybe a corrupted USB driver. Not damage to the port itself. If you've noted no problems with other USB devices though, then as I said, it's not likely anything to do with the fact that it's USB, but likely more to do with the fact that it's storage. If it's happening with multiple flash drives, in multiple ports, I'm willing to be that now an external drive will act the same, assuming you connect it via USB. Firewire/eSATA aren't guaranteed to act the same. Still, as a precaution, you might want to see if you can somehow get your hands on the USB driver for the system and reinstall it anyway.
        Ba'al: I'm a god. Gods are all-knowing.

        http://unrelatedcaptions.com/45147

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