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?

Locked Question. This question was migrated from the Microsoft Support Community. You can vote on whether it's helpful, but you can't add comments or replies or follow the question.

0 comments

Answer accepted by question author

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.

0 comments

Answer accepted by question author

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

0 comments

Answer accepted by question author

Anonymous

Simply change the driver to generic USB mass storage.

0 comments

78 additional answers

Anonymous

2015-03-26T21:25:59+00:00
I just wanted to let you know, I removed the RealteK drivers and installed the Microsoft drivers and the symbol changed to the Microsoft surface symbol and the Card reader now works without issues on the same card that was giving me problems.

The real problem is the automatic update automatically installs the RealteK drivers by default. I've shut-off the automatic updates for drivers and have the computer now ask me so I do not accidently install them again.

I wanted to thank you Bagg3rs - as this seems to have solved my issue. No more intermittent dismounts, waking from sleep works now and the card is in the exact same condition where it was giving me problems. From what I had experienced and talked to people about, I had tipped more on software/firmware from the beginning but just didn't have time to mess with it after I got it working using external USB card readers. I will come back in a week and confirm that my card is still working correctly for feedback
- as this seems to be an issue that has bothered MANY people with no clear answers The card is 64GB Sandisk ultra extreme. I wish Microsoft would add this to their surface trouble-shooting section - this was by far the EASIEST fix out of all the suggestions made so far.
Was this answer helpful?

0 comments No comments
Anonymous

2015-04-28T16:37:59+00:00

I experienced the "unmounting" issue with a Sandisk extreme pro 64GB. The "tape" tip resolved the issue for just one months.. when the problem came out again I was no more able to fix it (I tried to add another layer of tape/change its position etc.). The card started to dismount every 20 minutes!

I replaced the Sandisk microsd with a Samsung pro 64GB and I never had the same problem. The card is fast as the sandisk and works flawlessly.

The general consensus about this issue is to change microsd card. It seems that sandisk card (I'm a big fan of them) are prone to this kind of problem, at least with the Surface.

Cheers

Max
Was this answer helpful?

0 comments No comments