Database Users

64GB MicroSD Card - The how-to guide!

As you all hopefully know, the Note Can take up to 64GB MicroSDXC cards. But, what you may not know is the trouble that with comes with getting one to work. Its actually relatively simple When you know how to do it. l spent hours tonight trying to do it.
Originally the sd will probably be in the NTFS format created by Microsoft, which is understandable since its the biggest OS on computers.
Upon entering your SD onto the device, you should see that it wants you to format it. This is due to android not supporting NTFS. The only structure it supports is FAT32.
But, here's where your options come in! You have the choice of either making your device NTFS compatible (Note that this requires root), or reform making the storage device to FAT32. As my device is not yet rooted to test the NTFS support, l will only go over the reformatting process. Unfortunately, since I'm a new member I can't post links. Therefore, you'll need to trust google to guide you to what you want. But if you want to use the tool I used just Google "Kioskea HP USB Disk Storage Format Tool"
Disclaimer: I take no responsibility for any damage that you Cause to your device, computer or SD card while carrying out this method. It is your own decision to do this. This method should cause no harm to any system health, but, as with anything on a computer, errors can occur. Also, take note that the more you format something, the shorter its life will be.
Insert your SD card into the computer to format it. To format to FAT32, you will need to download a third party partition program, as windows withdrew the ability to format to FAT32 in an attempt to push more people on to NTFS. Only storage mediums with FAT32 as their default can format to it.
Once you've downloaded and installed the software, load it up and select your sd card and FAT32, as well as quick format then start. You should then insert it into your PHONE as the tablet doesn't seem to do this next step correctly. When inserted into your phone, it should say that the sd needs formatted. Do this then eject it and transfer it to your tablet and say yes to the dialogue that appears. And that's it in a nutshell! This can be applied for every android device possible.

Users report the newer note 10.1 updates will format 64gb cards into exFat which will allow for files bigger the 4gb (like HD movies).

Yes, i can confirm that if you update to the pulled ota update firmware, your tablet can format the 64gb sdxc to exFat and be read.
Sent from my GT-N8013 using xda premium

Sandisk 64Gb microSDXC cards comes preformatted with exFAT and not NTFS.
Brgds... /Tubgirl
Sent from my GT-N8000 using xda premium

I am using sandisk 64G sdxc card in my N8000 (Hong Kong version N8000ZSALI1 firmware) which natively supports exFAT format. It is fine so far. But I do not dare to copy large file from USB cable via Kies. I take out the card and put into SDXC card reader for large files copying.

Hi, I have some questions:
- What different between "HP USB Disk Storage Format Tool" and the Windows built-in format tool?
- Why your GNote 10.1 cannot format the SD card?

Tubgirl said:
Sandisk 64Gb microSDXC cards comes preformatted with exFAT and not NTFS.
Brgds... /Tubgirl
Sent from my GT-N8000 using xda premium
Click to expand...
Click to collapse
@Tubgirl my one came formatted with NTFS, rather than exFAT. So, I had assumed the rest were like this. It's strange that mine exFAT. :s
Itchiee said:
Users report the newer note 10.1 updates will format 64gb cards into exFat which will allow for files bigger the 4gb (like HD movies).
Click to expand...
Click to collapse
@Itchiee I'd seen reports of updates being able to support 64GB cards but that's all I was able to find. I only just got my Note 10.1 and it says on both the internal update and update via Kies that my tablet is up to date. Although, I am from the UK that may be why. I assumed my tablet was rolled out with the latest update. I tried exFAT on my tablet and it refused to work and was throwing the same error's at me.
vndnguyen said:
Hi, I have some questions:
- What different between "HP USB Disk Storage Format Tool" and the Windows built-in format tool?
- Why your GNote 10.1 cannot format the SD card?
Click to expand...
Click to collapse
@vndnguyen I recommended the "HP USB Disk Storage Format Tool" as compared to the standard Windows one as Microsoft pulled formatting support for anything except exFAT and NTFS. The only time Microsoft will let you format to FAT32 is if it was the native of that device, such as a flash drive. So, the difference between the two programs, is that the "HP USB Disk Storage Format Tool" can format to FAT32, as where Windows cannot.

I have just ordered a 64 gb sandisk android sdxc card, if i am not to bothered about transfering large files, is there much difference between using exfat and fat32?

zaslamel42 said:
@vndnguyen I recommended the "HP USB Disk Storage Format Tool" as compared to the standard Windows one as Microsoft pulled formatting support for anything except exFAT and NTFS. The only time Microsoft will let you format to FAT32 is if it was the native of that device, such as a flash drive. So, the difference between the two programs, is that the "HP USB Disk Storage Format Tool" can format to FAT32, as where Windows cannot.
Click to expand...
Click to collapse
I don't have 64G sd card. I have 8GB sd card and I can format it as FAT32 on my Windows 7 PC

vndnguyen said:
I don't have 64G sd card. I have 8GB sd card and I can format it as FAT32 on my Windows 7 PC
Click to expand...
Click to collapse
This is because the native format of 32GB MicroSD cards and below were FAT32. Like I said, if the device is native FAT32, then Windows will allow a format of that.

james_lpool said:
I have just ordered a 64 gb sandisk android sdxc card, if i am not to bothered about transfering large files, is there much difference between using exfat and fat32?
Click to expand...
Click to collapse
Sorry for not replying in my last post. I never seen your comment. There's some slight differences between FAT32 and exFAT. The main difference a common user should know is that FAT32 can only hold, and transfer a maximum of 4GB, as where exFAT does not have a size limit. That's why it's the "preferred" method. But, FAT32 is more popular as it's been around longer and is supported by more platforms than exFAT. If you want to know more about the differences, try a google search. Unfortunately I can't post links just yet to help you out with that. But, I'd recommend trying the exFAT wiki page. The stuff you'll find can get fairly technical. Just a heads up.

thanks for your reply, the sandisk card i am getting says its been made for android devices, will that means its probably already in the exfat format when i get it?
Would you know if the below card which i have ordered would probably work straight out the box?
http://www.amazon.co.uk/SanDisk-And...AJTO/ref=sr_1_1?ie=UTF8&qid=1348232652&sr=8-1

james_lpool said:
thanks for your reply, the sandisk card i am getting says its been made for android devices, will that means its probably already in the exfat format when i get it?
Would you know if the below card which i have ordered would probably work straight out the box?
http://www.amazon.co.uk/SanDisk-And...AJTO/ref=sr_1_1?ie=UTF8&qid=1348232652&sr=8-1
Click to expand...
Click to collapse
This is the one I got and I had to format on my Defy first. Then my tablet excepted it, for now I can only put movies, photos on. Any apps you want on doesn't work as of yet which was a big let down for me.

This appears to be the same one that I ordered. Mine came as NTFS but it may have just been a hiccup for mine as everyone else is apparently exFAT. One thing I also noticed is that the page says it is both class six and class 10. Just to clarify - It is class 10.
Sent from my GT-N8010 using xda app-developers app

jayjay* said:
This is the one I got and I had to format on my Defy first. Then my tablet excepted it, for now I can only put movies, photos on. Any apps you want on doesn't work as of yet which was a big let down for me.
Click to expand...
Click to collapse
Jayjay, there are apps that that allow you to do this. I would recommend trying App2SD, Link2SD and Directory Bind. DB can be found by searching the xda forums.
Sent from my GT-N8010 using xda app-developers app

zaslamel42 said:
Jayjay, there are apps that that allow you to do this. I would recommend trying App2SD, Link2SD and Directory Bind. DB can be found by searching the xda forums.
Sent from my GT-N8010 using xda app-developers app
Click to expand...
Click to collapse
Yes but you need to be rooted and im not, I did try them though but wouldn't work, wouldn't let me move to SD...:good:

jayjay* said:
Yes but you need to be rooted and im not, I did try them though but wouldn't work, wouldn't let me move to SD...:good:
Click to expand...
Click to collapse
Yeah some require root. I tried some today, as well. They don't work due to the memory config. Seems to be happen to all new releases, as if they're trying to block stuff like that. With all the trouble Google and manufacturers are going to to stop us rooting and stuff like that, Android will soon be as non-combustible as iOS!

problem with 64 gb sd
hello
i bought my note 10.1 and a microsd sandisc 64gb. it was exfat by default.but my note did not recognise that.so i take it of,i put it in my laptop and i reform it to exfat also.but again nothing.my note is not recognising it.does anyone have any idea why is that?and what can i do to make it work?
thank you for your time

kostasmag said:
hello
i bought my note 10.1 and a microsd sandisc 64gb. it was exfat by default.but my note did not recognise that.so i take it of,i put it in my laptop and i reform it to exfat also.but again nothing.my note is not recognising it.does anyone have any idea why is that?and what can i do to make it work?
thank you for your time
Click to expand...
Click to collapse
This is because Samsung claim that their Note 10.1 can support exFAT. In reality, the support for it doesn't work at the moment. What you will need to do is reformat it to FAT32, and it should work. If it still doesn't work after this, put the SD into your mobile phone then use the reformat option on the phone. The reformatting does not work on the Note 10.1, so you can't reformat it on that.
Let me know how it goes.

zaslamel42 said:
This is because Samsung claim that their Note 10.1 can support exFAT. In reality, the support for it doesn't work at the moment. What you will need to do is reformat it to FAT32, and it should work. If it still doesn't work after this, put the SD into your mobile phone then use the reformat option on the phone. The reformatting does not work on the Note 10.1, so you can't reformat it on that.
Let me know how it goes.
Click to expand...
Click to collapse
when i put the sd in my laptop,the 2 options that let me choose is ntfs and exfat.how can i reformat it to fat32?

exFAT WORKS ON LS7!!!

Finally!!! Those who use 64GB or bigger cards can use exFAT. I can confirm it works as I'm using it right now. No more 4,5GB file size limit! (tested writing 6,5GB mkv video to the card, worked without any issues) Writing big files to the card is about 10-11MB/s (when I was using fat32 it was 4-5MB/s). It's a shame that it doesn't work in CWM though (can't mount - gives me error). But I think devs will come up with solution for this quickly. At least Phil in his thread about Touch CWM said that he will provide fix when official LS7 will be released. So now you know and you can enjoy!
SMALL UPDATE:
If SGN says that your card is broken and needs formating than you should let it format the card. Mine was formated in Windows with SDFormatter application and still SGN gave me message that I need to format the card. After format in SGN it works as it should.
SMALL UPDATE2:
If you decide to buy a 64GB or bigger card for your SGN it would mean that it almost certainly would be SDXC micro exFAT formatted. In specification there is only said that card readers even if they are compatible with SDHC, might not be compatible with SDXC cards. And that would have been ok, but in my case my old SDHC compatible Imono card reader was destroying my SDXC cards! Who would have suspect it? It happened 3 times and I was able to use my card after I bought a new card reader certified for SDXC and whole operation of exchanging broken cards took almost 2,5 months! So be careful where you put you 60 dollar card into! Old reader might read the card properly but it can damage while writing stuff to it.
It's not really that important if you plan on using your card only with SGN. At least I don't have any issues with it now. But then there wasn't JB for SGN and so I was trying to use NTFS and so I needed a card reader.

waow very nice news thank you

So happy about this wait for the official update to come!

best news i heard today. thanks.
- post from SGN.

Does this mean we can use files larger than 4gb?

Well, it should. http://en.wikipedia.org/wiki/ExFAT states that exFAT should be able to support file size of 16 Exibyte

squicky said:
Finally!!! Those who use 64GB or bigger cards can use exFAT. I can confirm it works as I'm using it right now. Writing big files to the card is about 10-11MB/s (when I was using fat32 it was 4-5MB/s). It's a shame that it doesn't work in CWM though (can't mount - gives me error). But I think devs will come up with solution for this quickly. So now you know and you can enjoy!
SMALL UPDATE:
If SGN says that your card is broken and needs formating than you should let it format the card. Mine was formated in Windows with SDFormatter application and still SGN gave me message that I need to format the card. After format in SGN it works as it should.
Click to expand...
Click to collapse
That's grt

squicky said:
Finally!!! Those who use 64GB or bigger cards can use exFAT. I can confirm it works as I'm using it right now. Writing big files to the card is about 10-11MB/s (when I was using fat32 it was 4-5MB/s). It's a shame that it doesn't work in CWM though (can't mount - gives me error). But I think devs will come up with solution for this quickly. So now you know and you can enjoy!
SMALL UPDATE:
If SGN says that your card is broken and needs formating than you should let it format the card. Mine was formated in Windows with SDFormatter application and still SGN gave me message that I need to format the card. After format in SGN it works as it should.
Click to expand...
Click to collapse
Thanks for the good news!

ITT:
Quoting entire OP and spamming thanks without using the thanks button.
Sent from my GT-N7000 using Xparent ICS Tapatalk 2

Care about file size. SPEED was the problem!
Good you say about cwm and exfat. Need a second card with me then at work, to dl and flash new roms when bored.
Sent from my GT-N7000 using Tapatalk 2

can i formate my internal SD to exfat??
will it work.. ??
I dont need SD card for my use.. Just need 1gb of the total space in it..

I didn't try that, but I'm pretty sure it's not possible, as exFAT doesn't come from Google and it's not open standard (I think Microsoft is selling liceneses for this). Even though Android on diffrent brands of smartphones is modyfied here and there to accomodate the devices and enhance user experience it's still Android and I've never heard that android is supporting exFAT. Even if what I say is wrong (I'm still half noobish so it's possible ) there would be no real benefit from using exFAT on internal sdcard (well apart from "unlimited" file size - like it would matter on 11GB of free space anyway ) as the system was designed for hotswapping/external devices and we have internal sdcard which can't be removed.
What's more I have better writing speeds on my internal card (12MB/s) than on external 64GB exFAT (max 10-11MB/s). I don't really understand what you mean by "I dont need SD card for my use.. Just need 1gb of the total space in it." You think that beacuse of exFAT you will have 1GB more space on your internal sdcard?

It said mine was broken,bla,bla,..reformatted, then week later said same thing!
Don't want to wipe valuable stuff or take it out all the time to back up
Sent from the man hiding in your attic......

I don't really understand what you're trying to get across here? If you put a 32GB+ exFAT format in your SGN, it will tell you the card is corrupt and ask you to format it (which you should do and which you also mention in your update), which will change it to FAT32 format, so you lose the exFAT format.
Am I missing something here?

Today received sandisk 64 gb sdxc. It was formatted exFat out of the box. I copied all data from old ed to new one. All work fine except clockwork. Clockwork can't mount exFat. Installed rom: Ultimate N7000 xxls7 v4. Kernel: Phil's v3.5

Guys,
The inbuild storage space is less for me. I have a 16GB class 4 sd card which is also full and i need more space. I am planning to buy a 64 GB Class 10 microsd card. Will note support the 64GB class 10 microsd card?

The post above yours sais it does.
Sent from my GT-N7000 using Tapatalk 2

Well I just ordered a 64gb class 10 from amazon. Nice discount from $59 to $39. Will be testing as soon as I receive. You guys should take advantage of the deal too!!
Sent from my GT-N7000 using Tapatalk 2

Thats grt.
Would be really helpful

I'm sorry but who needs 4+ gb files on their phone?
Just format your 64gb card using this tool! Regular windows fat32 format is capped at 32gb, but this tool will allow you to format the whole 64gb. This way you can have both 64gb storage and the card recognized by custome recovieries. Works great on my Note2 and S3.

[Q] MicroSD card problem

Hi guys,
I hope you guys can help me with this issue i'm having as i cant find any answer from searching here nor google.
Basically i bought a Samsung micro SD card that is 64gig (from Dustin.se which is a big company so i'm sure its no fake or anything) and the first thing i did was to format it to exFat using my win8 pc. But no matter what i do the pc see the card as 26gig!!!
I even downloaded a format program from
https://www.sdcard.org/downloads/formatter_4/
Now when i put the card into my S4 it sees it as 26gig which i formated but if i do a re-format it shows as 59gig (or 64gig in reality).
So i know the card is 64Gig but the question is why cant i format it using my pc?
And to make it even more strange when i take the card from my S4 back to my PC it wont recognize it, it wants to format it again. This happens after i format the SD using my S4.
Any idea why?
Basically all i want is to be able to use exFat (for big files) and be able to use the SD card both on phone and PC. Can someone please help me and tell me what i'm doing wrong?

Sounds like a fake or defective card to me. If windows will not see the entire capacity the chip has problems.
Sent from my SPH-L720 using xda app-developers app

ashton4life said:
Sounds like a fake or defective card to me. If windows will not see the entire capacity the chip has problems.
Sent from my SPH-L720 using xda app-developers app
Click to expand...
Click to collapse
I actually got 2 of them and as i said this is the real thing. I reported the first one as bad chip since 2 times i got "corrupted SD" card from my S4.
But now when i test both of them on PC they behave the same. And i actually think the problem with my first SD is the phone that corrupt some files (just a feeling) since it works fine when i restart the phone.
Any other ideas? (i tested on my Macbook and another PC win7 with same result )
Do you have an 64gig card? if so did you format it using pc? and have your tried to format using S4 and put the SD into PC? did it work reading from it? What was the format S4 formated (Fat32 or exfat)?
ps. i run stock ROM so no root or anything.

vampyren said:
I actually got 2 of them and as i said this is the real thing. I reported the first one as bad chip since 2 times i got "corrupted SD" card from my S4.
But now when i test both of them on PC they behave the same. And i actually think the problem with my first SD is the phone that corrupt some files (just a feeling) since it works fine when i restart the phone.
Any other ideas? (i tested on my Macbook and another PC win7 with same result )
Do you have an 64gig card? if so did you format it using pc? and have your tried to format using S4 and put the SD into PC? did it work reading from it? What was the format S4 formated (Fat32 or exfat)?
ps. i run stock ROM so no root or anything.
Click to expand...
Click to collapse
When you have the chip in the PC right click My Computer/Manage/Storage/Disk Management then find your chip on the bottom, right click on it, then delete the partition, form a new one then format. Check and see if the proper storage amount is there after. I cant see the phone damaging the chip but who knows anything can happen.

Are you running xp? (Edit Sorry now I see you aren' t. Card reader? ) Older versions of Windows only have ability to read sdhc as opposed to sdxc so have problems with cards over 32gb (max for sdhc standard)
If so borrow a newer pc. The card probably was exfat from factory though. I've a 64gb card from Samsung as well (fat32) and had the corrupt message a couple of times. Fixed with remount.

Samsung 64gb user here. No probs at all. Formatted it once on my phone when i got it.
Sent from my GT-I9505 using xda premium

ashton4life said:
When you have the chip in the PC right click My Computer/Manage/Storage/Disk Management then find your chip on the bottom, right click on it, then delete the partition, form a new one then format. Check and see if the proper storage amount is there after. I cant see the phone damaging the chip but who knows anything can happen.
Click to expand...
Click to collapse
Cant delete the partition, its greyed, all i can do is format

Shug69 said:
Are you running xp? (Edit Sorry now I see you aren' t. Card reader? ) Older versions of Windows only have ability to read sdhc as opposed to sdxc so have problems with cards over 32gb (max for sdhc standard)
If so borrow a newer pc. The card probably was exfat from factory though. I've a 64gb card from Samsung as well (fat32) and had the corrupt message a couple of times. Fixed with remount.
Click to expand...
Click to collapse
As you saw i tested on windows 8 and 7 so dont understand why it dont work
And as you say a remount fixes the corrupt problem so i dont think both my cards are fine but cant understand why i cant format them on my pc....
I want to be able to pop it out from the phone and copy/paste but as it is now when i format it on phone it gets unreadable on the pc which is also really strange. .

Ok i figure it out, i was to tired to think last night
The conclusion is that my microSD converter was obviously not compatible with the SDXC i assume, i had 2 usb stick that take the micro SD but when using these on my windows8 they were both detecting wrong. I had also a coverter that is in the form on regular SD card so when i use this one and put the micro SD in my laptop with buildin SD reader i see the 64gig right away and can also read the memory when i take it from the phone. So all works now.
I need to find a USB stick converter to be able to use it on my big PC
Thanks for the help guys.

vampyren said:
Ok i figure it out, i was to tired to think last night
The conclusion is that my microSD converter was obviously not compatible with the SDXC i assume, i had 2 usb stick that take the micro SD but when using these on my windows8 they were both detecting wrong. I had also a coverter that is in the form on regular SD card so when i use this one and put the micro SD in my laptop with buildin SD reader i see the 64gig right away and can also read the memory when i take it from the phone. So all works now.
I need to find a USB stick converter to be able to use it on my big PC
Thanks for the help guys.
Click to expand...
Click to collapse
:good::victory::highfive:

[FIX] sandisk 64gb micro sd card

Like alot of you, I recently had alot of trouble with my sandisk 64gb micro sd card. this fix is pretty easy but it worked for me! so check it out:
you need two programs: SD formatter( can be found on the sandisk website) and easeus partiton master( you can use any program that lets you format partitions)
you will also need the sd card adapter to put you micro in, and an sd card reader
Step 1: connect your sandisk 64gb microsd card to the computer with the adapter it came with in the box. My laptop has the sd card reader built in
I dont think it will work unless you connect it this way.
Step 2: open sd formatter, it should have recognized your card if not click refresh. after its recognized click Options and set format type to full (overwrite) format the sd card. this will take a long while so you might wanna go watch tv or something?
step 3 : after its done formatting open partition master and right click on the sd card and format it to fat32. your going to have to click apply on the top right hand corner for it to work
you should be set. DONT FORMAT IN THE ANDRIOD SETTINGS. for some reason when ever i fixed the micro and tried formatting it in my phone it would mess up everything thing again.
I keep a 32 gb in my s4 now and use my 64 in my note 10.1 because i need the space there more. Let me know if this works for you!

britoskates said:
Like alot of you, I recently had alot of trouble with my sandisk 64gb micro sd card. this fix is pretty easy but it worked for me! so check it out:
you need two programs: SD formatter( can be found on the sandisk website) and easeus partiton master( you can use any program that lets you format partitions)
you will also need the sd card adapter to put you micro in, and an sd card reader
Step 1: connect your sandisk 64gb microsd card to the computer with the adapter it came with in the box. My laptop has the sd card reader built in
I dont think it will work unless you connect it this way.
Step 2: open sd formatter, it should have recognized your card if not click refresh. after its recognized click Options and set format type to full (overwrite) format the sd card. this will take a long while so you might wanna go watch tv or something?
step 3 : after its done formatting open partition master and right click on the sd card and format it to fat32. your going to have to click apply on the top right hand corner for it to work
you should be set. DONT FORMAT IN THE ANDRIOD SETTINGS. for some reason when ever i fixed the micro and tried formatting it in my phone it would mess up everything thing again.
I keep a 32 gb in my s4 now and use my 64 in my note 10.1 because i need the space there more. Let me know if this works for you!
Click to expand...
Click to collapse
It really depends on the troubles you have, most of them are some kind of incompatibility with the S4 firmware and the 64GB SD card and formating this will not help. My issue was each time i'd put music on my SD, my system status would trip to custom, also my music would not always show up at boot. This has been a recurring problem with the sandisk cards no matter how i formated it. And yes, i did use SDFormater 4.0 and still had the issue. My only solution was to get a Samsung 64GB SD and no issues since

Sometimes mine removes itself, but a media rescan or reboot fixes it. Doesn't really bother me.

I use a 64gb PNY class10 and its flawless for me.I think the issue is witg the sandisk bran.
Sent from my SAMSUNG-SGH-I337 using xda premium

Figured this is a good thread to post my experience.
I had a MicroSD card I thought was bad. What happened was I was formatting the device to ext4 at the time using a older microSD USB adapter i had. Basically, the microSD card reader died while it was in that process. Using a microSD > SDAdater and a built in SD card slot on my laptop I was unable to format the drive in Windows or MacOS. (I was formatting the device via the USB reader on my Desktop in Ubuntu). Ubuntu does not see my card reader on my laptop so I was unable to use that). I thought I killed it. It was a SanDisk microSDXC 64gb card.
So I ordered a new Samsung microSDXC and a new microSDXC USB card reader. I got them both. New card worked great. I decided to play with the card a bit. Using Ubuntu, gparted specifically, with the new adapter I could no create or modify partitions on the old microSD card. It would fail out every time, different errors for ext4, exFAT and Fat32. So. In Gparted I went to Device > Write new partition table.After I did that I would able to format the drive in Ubuntu to whatever filesystem I wanted, and the card works in the phone, mac, windows, everything.
Just a heads up to help any others with issues. Rewriting the partition table may help if somehow it gets corrupt because of some write fail,

I ve 2 64gb sandisk 10x microsd with Samsung S4 I9005 with Android 4.3. I formatted with android, also Windows 7 64bit with various types of sizes on laptop. However on laptop or on phone after writing some files and disk scanning, it gives many disk errors. I wonder if it is software or microsd hardware problems. There is no problem with 32 gb.
Sent from my GT-I9500 using XDA Premium 4 mobile app

Found the Culprit!
Considering I encountered this write protect error TWICE with the exact same product, and after having read forums that show it's a common problem, I conclude that the problem is with either this specific SanDisk product or a particular batch of this product:
Exact product specs: SanDisk Ultra 64 GB MicroSDXC Class 10 UHS-1 Memory Card with Adapter (SDSDQU-064G-AFFP-A)
These carry a lifetime warranty. A word of advice: if you go for a replacement, ask for a different 64GB model, or try a different size of the same model (I got 2 x 32GB cards instead). If they insist on giving back the exact same model, I'd suggest you use that card anywhere except a smartphone!

[Q] Question about format the sd card as exFat

so I was looking at that new root post. and it request us to format the sd card to exFat.
so I was looking around in my house. and finally I found a sandisk 2GB micro sd. and I insert it to the phone, and format it. I thought it will ask me to format as exFat or something else. but it didn't. It just format by itself.
and I was thinking is there another way to format a sd card to exfat. or it is not possible for a 2G micro sd?

ksj0823 said:
so I was looking at that new root post. and it request us to format the sd card to exFat.
so I was looking around in my house. and finally I found a sandisk 2GB micro sd. and I insert it to the phone, and format it. I thought it will ask me to format as exFat or something else. but it didn't. It just format by itself.
and I was thinking is there another way to format a sd card to exfat. or it is not possible for a 2G micro sd?
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Google "format exfat xda" But a 2 gig is pretty small to do anything with. Bet you want to root mf3?

jd1639 said:
Google "format exfat xda" But a 2 gig is pretty small to do anything with. Bet you want to root mf3?
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XD you right!!!
well, I still can't find anyway to do it.

ksj0823 said:
XD you right!!!
well, I still can't find anyway to do it.
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Formatting it through the phone wont work, at least i have yet to see it done. At least on newer Android devices that wont allow you to mount the card. Essentially, formatting it while its being accessed via MTP really only erases the card, it doesnt change the file system...i believe.

cloudraker said:
Formatting it through the phone wont work, at least i have yet to see it done. At least on newer Android devices that wont allow you to mount the card. Essentially, formatting it while its being accessed via MTP really only erases the card, it doesnt change the file system...i believe.
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I put it into my phone. and connect it to my laptop. and I formatted it on the laptop. it doesn't work. so maybe I need to format it from the sd card reader or find a adapter?

ksj0823 said:
I put it into my phone. and connect it to my laptop. and I formatted it on the laptop. it doesn't work. so maybe I need to format it from the sd card reader or find a adapter?
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yes, you need to put it in an adapter or find an older Android device that allows you to mount the SD card as storage. Those are the only methods i know that will work.

Did you set the usb debugging before you connected the phone to the computer?

easiest way just get the 64gb samsung class 10 card on Amazon--already exFat--not that expensive and works perfectly on everything I have flashed so far--
just a thought

rugmankc said:
easiest way just get the 64gb samsung class 10 card on Amazon--already exFat--not that expensive and works perfectly on everything I have flashed so far--
just a thought
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That is not allways the case. I purchase one 2 months ago and did not had exFat. But it works perfectly.
Sent from my SAMSUNG-SGH-I337 using xda premium

If you get the one here from Amazon that I am referring to it will be exFat.
Samsung Electronics 64GB Pro microSDXC Extreme Speed (UHS-1) Class 10 Memory Card (MB-MGCGB/AM)
Mine has been flawless and super fast--