OFFICIAL T100 microSD Discussion & Help Thread

Hi,
I've bought a SanDisk ultra microsdxc uhs-1 card 64gb to go along with my T100. When I try to copy a file to this, it gives an error message saying that it can't copy, although directly saving a word file or something to the card does work. When I try to reformat the card, I also get an error message about it not being able to. Is there a way to see if it's a faulty card or if the problem is somewhere in the connection in the tablet? I don't think I have another spare microsd card to test it with.

Quote:

---

Originally Posted by lordvy

Hi,
I've bought a SanDisk ultra microsdxc uhs-1 card 64gb to go along with my T100. When I try to copy a file to this, it gives an error message saying that it can't copy, although directly saving a word file or something to the card does work. When I try to reformat the card, I also get an error message about it not being able to. Is there a way to see if it's a faulty card or if the problem is somewhere in the connection in the tablet? I don't think I have another spare microsd card to test it with.

---

Did you format the microSD card first before using?

No I did not. I just plugged it in, made a few folders and tried to copy files to it.

Quote:

---

Originally Posted by lordvy

No I did not. I just plugged it in, made a few folders and tried to copy files to it.

---

Most cards are not formatted when you buy them...so by formatting them...you're generally assured of clean operations.

How it's formatted can also make a difference. My T100 has no issues with a 64GB Sandisk formatted in NTFS.

I've just tried to format it as both the standard exFAT and NTFS (in the T100), in both cases it says that the formatting has failed. Somehow it then formatted (as in, was emptied) and when I tried to copy a file, it got to up 30% or something, then it stopped and now it says that the drive can't be found. I'm not too bothered if it's a faulty card, but I'd rather not have to return the tablet in warranty.

Quote:

---

Originally Posted by lordvy

I've just tried to format it as both the standard exFAT and NTFS (in the T100), in both cases it says that the formatting has failed. Somehow it then formatted (as in, was emptied) and when I tried to copy a file, it got to up 30% or something, then it stopped and now it says that the drive can't be found. I'm not too bothered if it's a faulty card, but I'd rather not have to return the tablet in warranty.

---

Is there any other device you can try formatting the microSD card with?

Bad cards do happen...but not often. Sometimes a reformat on another device cures any problem.

H2testw Free Download

You could use this program (H2testw) to test the microSD card.

Quote:

---

Originally Posted by Swipe

H2testw Free Download

You could use this program (H2testw) to test the microSD card.

---

Great idea.

What BIOS are you on?

A friend of mine was having this exact same issue when he was on 2.16, with multiple 64 gig cards. 16 gig cards worked just fine for some reason, which is why I suspected there was something more to it than a pure hardware fault. When he updated to 2.20, the issue went away.

I know "make sure you have everything updated" is a pat answer, but in this case it really does seem to be an issue that a firmware update can fix.

Thanks a lot for the answers, you guys are great. It says that the BIOS version is American Megatrends Inc. T100TA.214 22/09/2013 so I guess this is version 2.14 and I can give it a shot to update it. Do I need to download it from ASUS or from this American Megatrends?