MicroSD card randomly unmounts itself

Anonymous
2015-05-29T17:26:43+00:00

I inserted a Samsung EVo 128GB micros-SD card into my new Surface 3, intending to use it as photo storage for my photography workflow.

However, after a fee minutes - even without using it - the drive appears to unmounts itself. It's still visible in Explorer, but clicking it results in Explorer hanging and eventually giving the error "please insert a disk" after several minutes. In Disk Manager, the drive sometimes appears, with the correct amount of space, but indicates it's all unallocated.

This issue is fixed temporarily by removing and reinserting the disk, but a short time later it unmounts itself again. I tried the disk in my older Dell Venue 8 Pro, but the issue didn't occur there.

I've looked at previous threads about similar issues on older and Pro models, and tried setting the policy for the microSD drive to 'better performance' and even tried setting up a VHD, but none of these provided a solution.

Does anyone know what I can do?

Surface | Other

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  1. Barb Bowman 80,815 Reputation points MVP Volunteer Moderator
    2015-12-14T10:57:33+00:00

    On Sun, 13 Dec 2015 20:39:46 +0000, jcgc50 wrote:

    >>I do see that the driver loaded by Windows for each of these devices is different. Not sure if that is the issue or not. I am including a screen shot. In the list of drivers Generic 00000 SD Card is the one that Windows installed for the Samsung Evo+ 128GB. The driver Generic SL128 SD Card is what was installed for the SanDisk Ultra 128gb.

    those aren't "drivers" - those are the identifiers for the device. you have to

    right click the device, properties, driver to see a driver version. And they

    will show the Microsoft generic 2006 driver. That date doesn't mean anything.

    What do you have connected to your tablet? It would be good to see how things work with just the tablet and no other peripherals.

    __________________________________________________________________________________________________

    Barb

    Windows Experience MVP

    My Blog - http://digitalmediaphile.com/

    Please mark as answered if this answers your question

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  2. Anonymous
    2015-12-14T15:38:03+00:00

    "What do you have connected to your tablet? It would be good to see how things work with just the tablet and no other peripherals."

    Thanks for the clarification. I don't know what I was thinking since I realize that you have to view properties to see the driver. Throughout this I haven't had anything else connected, at least, not at the same time.

    The SanDisk continues to show up.

    Jim

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  3. Anonymous
    2015-12-14T16:28:05+00:00

    I just ordered a 128gb silicon power card I'll report my findings.

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  4. Anonymous
    2015-12-18T17:42:11+00:00

    JC? Can I get a support case set up for you?  Email me at susan-at-msmvps.com (change the -at- to @) and I'll get some info from you to set up a support case.

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  5. Anonymous
    2015-12-21T00:22:43+00:00

    Well ordered the Silicon Power 128 GB micro SD card and so far so good. Initially it didn't recognize the card but ejecting and inserting got it going. So far so good, the unmount issues happened almost within seconds with the cards I had issues with but these I've been able to play 20 min videos all the way through. These cards are both cheaper and more reliable at this point. As far as long term, can't say but I've used my 64 GB card for 6+ months with no issues. I'd say worth a shot for those of you who are looking for a solution.

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