Maybe the Surface 3 can't handle cards that are UHS-1 and have read transfer rates as high as 80MBs? Maybe the cards flake out with the device due to that? Speculation... But the Lexar is higher read speed than your current one(Sandisk), which is like what, 30MB/s file transfer speeds?
128GB MicroSD card keeps unmounting/crashing
- Thread starter mkenny28
- Start date
Compusmurf
Active Member
I have that lexar card with 0 issues ever. I would suspect your machine at this point.
I certainly hope not. some hope here as other people having problems, but getting a different card has solved theirs.
Well, update here concerning the Lexar card:
I stuck it into my android phone and tried to format. Android did it in exFAT (removed the NTFS)
I then put the card into my Surface 3 and formatted again the card into exFAT with the default settings.
Now the card isn't dismounting. Currently I'm playing music non stop while at the same time copying
a slew of video files over to the card via homegroup network.
I don't know if things are worked out now, but before doing this, I couldn't get through playing 1 song without the card unmounting.
Keeping fingers crossed. I kinda want NTFS though, for the encryption(?)
I stuck it into my android phone and tried to format. Android did it in exFAT (removed the NTFS)
I then put the card into my Surface 3 and formatted again the card into exFAT with the default settings.
Now the card isn't dismounting. Currently I'm playing music non stop while at the same time copying
a slew of video files over to the card via homegroup network.
I don't know if things are worked out now, but before doing this, I couldn't get through playing 1 song without the card unmounting.
Keeping fingers crossed. I kinda want NTFS though, for the encryption(?)
That's encouraging news and I hope it sticks! I had tried some formatting changes with my Lexar (it's been a while, don't recall specifics) but it didn't help mine.
As others have suggested I also think it's a driver issue but who knows.
SanDisk - Ultra 128GB microSDXC Class 10 Memory Card - Gray/Red
I got this one a while back and have had no problems with it.
I got this one a while back and have had no problems with it.
Is it the SDSQUNC-128G-GN6IA ? Do you have it already? Any issues?
I am also going to buy a new card - my old one 64GB A-data is doing exactly what you guys describe - unmounting at random times (sometimes working a whole day, sometimes 5 min...). I tried formating, different drivers, different settings etc. and nothing helped. In my android phone and other laptop it works flawlessly, so I think it is some reader-card issues and I hope I will be also able to find a card that works for me (hopefully nothing wrong with the reader in S3)
Btw. BlueC7 - still no issues? It is strange that formatting in a phone would help even though you re-formatted it again in S3....
I got this one, 128gb, had it running all day today downloading from DropBox and OneDrive and it seems ok
http://www.amazon.co.uk/dp/B010Q57S62/ref=pe_385721_37986871_TE_item
http://www.amazon.co.uk/dp/B010Q57S62/ref=pe_385721_37986871_TE_item
Just joined here. I purchased a Surface 3 running Win 10 just a couple of weeks ago. Picked up a Samsung Evo 128gb card and am having the same problem described here.
Have tried the tape, changing the policies setting in device manager changed formating from exFat to NTSF with no luck.
Will take the card back and try a Samsung and see what happens.
Have tried the tape, changing the policies setting in device manager changed formating from exFat to NTSF with no luck.
Will take the card back and try a Samsung and see what happens.
