Surface Pro microSD card unmounts after waking up from sleep

Anonymous

Hi,

I've recently bought Surface Pro along with a 64 GB sd card. I've noticed that after a long sleep period, the SD card unmounts itself and I can no longer find it under explorer. I need to remove and reinsert it before Windows detects the card again. This doesn't happen if I wake up the device shortly after putting it to sleep, only after a few hours. I wouldn't mind it as much if I didn't have to set up Skydrive again after reinserting. I think it might have something to do with s3 sleep, and might be a driver/software error, but I'm not entirely sure. Any ideas?

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Anonymous

I finally solved this problem by enabled write-caching for the SD card. My card no longer unmounts unexpectedly when changing power modes. I realize this comes with some risk of possible data loss if the card is not ejected properly.

I right-clicked on the SD card device in device manager under Disk Drives.
Then clicked properties
Then went to the policies tab
And then selected "best performance"

So far, no unexpected dismounts and no data corruption. This has also improved the performance of the device as reads and writes of large files seem to be much smoother now.

My theory is that this setting is preventing the slot from powering down while in a hibernated or suspended state.

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Anonymous

Hello Ted

Check out my other post here

http://answers.microsoft.com/en-us/surface/forum/surfpro2-surfdevice/micro-sd-slot-no-longer-recognized-in-the-surface/2705d99f-440a-41a4-9bdf-965f1b092efd

Eventually I changed the card same make/ model, formatted it as NTFS and so far have had no issues at all...........and its been almost 2 months now.

I think Scandisk have issues with quality control ?

Try a full format on NTFS , it does take sometime

If it still has issues after that I would use the card in your phone or something else and by another one brand new for the slate.

It worked for me.

I guess we will get the same issues when the 128GB MSD card comes out!

Good luck

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Anonymous

Simply change the driver to generic USB mass storage.

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78 additional answers

Anonymous

2013-03-09T09:38:49+00:00

This might not help, but its kind of related. I was looking for a way to let libraries point to the MicroSD since by default they won't, and the wife's 20+ GB of music would otherwise fill the Surf 64 GB SDD... Found this link for setting up a VHD on the sd and automounting it on startup w/ task scheduler. Maybe you could set up a similar event to remount on wake?

http://www.reddit.com/r/Surface/wiki/index#wiki_how_to_add_media_in_a_micro_sd_card_to_the_library

That's worked like a charm for me, both music and pics reside on the sd and sync to the library and appropriate tiles.

That sounds promising. Does that work with Skydrive? Whenever skydrive detects that your folder is missing, it will auto-exit and you will need to set up Skydrive again.

I wish I had another microSD card to test with...
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Anonymous

2013-03-09T03:34:49+00:00

This might not help, but its kind of related. I was looking for a way to let libraries point to the MicroSD since by default they won't, and the wife's 20+ GB of music would otherwise fill the Surf 64 GB SDD... Found this link for setting up a VHD on the sd and automounting it on startup w/ task scheduler. Maybe you could set up a similar event to remount on wake?

http://www.reddit.com/r/Surface/wiki/index#wiki_how_to_add_media_in_a_micro_sd_card_to_the_library

That's worked like a charm for me, both music and pics reside on the sd and sync to the library and appropriate tiles.
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