Develop Bugs

HELP! Problems with new Sandisk 64GB Micro SD

Hi all, this may have been asked a thousand times but I cannot find a definitive answer to this. I bought a 64GB Sandisk Micro SD Class 6 card to use for all my games and stuff. I received it today and tried putting it in my phone. It always shows as damaged card, so I tried the proper steps of pulling down the notification bar, selecting the card and the phone told me it would need formatting, so I clicked format.
But to my dismay the bloody phone formatted the internal USB storage so I lost all my pictures and personal stuff!!!
To add insult to injury, I cannot get this bloody card to format and work no matter what I try. I haven't formatted or partitioned it in my PC, only tried through the phone.
Please, please can anyone help???

Got it sorted. Mods can delete this thread if need be

bigdyl69 said:
Got it sorted. Mods can delete this thread if need be
Click to expand...
Click to collapse
Maybe you should tell how you did it for other people with the same problem. I was also thinking of buying this 64 GB SD-Card and who knows maybe I stumble upon the same problem

Scarface1991 said:
Maybe you should tell how you did it for other people with the same problem. I was also thinking of buying this 64 GB SD-Card and who knows maybe I stumble upon the same problem
Click to expand...
Click to collapse
Sorry, I would have posted it up as soon as I sorted it but I was in a flap trying to get my phone back up and running properly.
What it seems to boil down to is that custom ROMs generally don't format the external SD cards correctly, or so I read somewhere on a thread on XDA (I think it was in the T989 thread or something like that). I used the free EaseUS Partition Manager tool to first remove the partition on the card (64GB formatted to exFAT), then create a new 64GB Fat32 partition. I don't know whether it was necessary but I flashed Samsung standard LP7 Rom to my phone and fully factory reset the phone.
After that was done, I inserted the 64GB card, booted up and went through settings-> storage and erased the SD card to make sure it was formatted correctly for the S2
...and voila
Hope that helps someone out

Get the app undelete to restore your deleted stuff

My SD card was working out of the box with Galaxy S2. I just formatted it and that was it
Just got a Galaxy S3 last week and the same SD was driving me insane with message
SD damaged after copying 59 GB of music to the phone
It was playing music without problem but as soon I restart the phone it would through error SD damaged
After so many tests I just found out that KIES is the one was corrupting my SD card
I tried copying my music with Sandisk data manager, mediamonkey, adding music folders manually and it works flawlessly, restart and not problem
All this app recognize Galaxy S3 quicker than SAmsung KIES, KIES takes a while sometimes to connect to the phone
Hope Samsung update KIES because it doesn't work with GALAXY S3 for uploading 59 gb of music
I was about to send my SD to amazon and get a refund, thanks I didn't do it
Happy days after so many days of testing

Hi guys
I also had the same issue with sandisk 64 gb card but couldnt find any solution n had to get two cards returned.... i dont use kies or any other thing. It also got damaged on first restart after copying 30+gb data on it. Couldnt find a damn solution. Now i have ordered a kingston 64 gb one to c if it makes any difference. Any idea by anyone to check it in a proper manner n maje it properly usable?
Thanks in advance
Sent from my GT-I9300 using Tapatalk 2

Tnx
bigdyl69 said:
Sorry, I would have posted it up as soon as I sorted it but I was in a flap trying to get my phone back up and running properly.
What it seems to boil down to is that custom ROMs generally don't format the external SD cards correctly, or so I read somewhere on a thread on XDA (I think it was in the T989 thread or something like that). I used the free EaseUS Partition Manager tool to first remove the partition on the card (64GB formatted to exFAT), then create a new 64GB Fat32 partition. I don't know whether it was necessary but I flashed Samsung standard LP7 Rom to my phone and fully factory reset the phone.
After that was done, I inserted the 64GB card, booted up and went through settings-> storage and erased the SD card to make sure it was formatted correctly for the S2
...and voila
Hope that helps someone out
Click to expand...
Click to collapse
A million thanks, I wanted to throw away my 64Gb card and I've payed 70$ for it, but after formatting with EaseUS Partition Manager to Fat32 it works just fine I've tried with Windows a 100 times with no results.

EaseUS Partition Manager def did the job!
here comes the weird bit:
connecting the 64gb micro sd with this
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to my pc shows 29 gb in easeUS.
while inserting it in my phone it shows 59.4 gb
using this type of adapter
and connected to the pc with a sd - to - usb adapter:
http://h10025.www1.hp.com/ewfrf-JAVA/Doc/images/550/c01650840.jpg
it will show 59.4 gb in easeUS as well
does that make any sense at all?

I bought this to put into my Samsung Galaxy S3 and opted for the Sandisk name due to previous purchases and reputation. Many people have said to format the card via the phone before use so I did this, or tried to, but it just kept saying that it was in an incompatible format and the process could not be carried out! Ok, a little frustrating but I thought I'd just use the supplied adapter and format it via my laptop. Similar message from Windows - not able to complete the format, the disc may be corrupted!!! I tried this several times on both the pc and the phone and nothing. Very poor in my opinion and it has been returned for a refund.

Thanks! This really saved my day

I ended up getting a 64gig Sandisk super duper card (or whatever it is called). I plugged it into my computer via a USB adapter, and it worked fine. Then I formatted it in FAT32 with the tool suggested in previous posts, and that worked fine. Then as I was copying stuff over (it was still plugged into the computer, my phone was in USB mode transferring data), the transfer froze. I unplugged it, and it was warm. So I tried again, it worked for a bit, and then would freeze. Not sure what the issue was. So I returned it to Best Buy, and they are sending me a new one. Hopefully this one works.
Any tips or suggestions other than formatting it with that utility? Could it really just have been the card itself?

Got one last night, formatted it using the program suggested, no dice. Getting a "damaged card" notification, nothing I can think of is working.
Formatted on my PC, formatted using a Mac, formatted using a linux terminal, nothing seems to work.
Anyone have any ideas on what else I can do to rectify this issue? :/
Or is it safe to assume that it's a defective card?

Vaesar said:
Got one last night, formatted it using the program suggested, no dice. Getting a "damaged card" notification, nothing I can think of is working.
Formatted on my PC, formatted using a Mac, formatted using a linux terminal, nothing seems to work.
Anyone have any ideas on what else I can do to rectify this issue? :/
Or is it safe to assume that it's a defective card?
Click to expand...
Click to collapse
Hi, know what you're going through. See my post at http://forum.xda-developers.com/showthread.php?t=1698672&page=9
The guiformat tool under the link luigig posted worked great. (I'm too new a member to repost the link here.)
If it doesn't work I suspect you really have a damaged card. There are some known bad batches.

Had an a media scanning issue on my new SGIII (At&T), from my sandisk 64 card. which was previously formated at 32. I used OP's method and so far so good. I also transfered my files to pc and ran defragler on them as i had a media scan issue. I transfrered all pictures with no intent on putting them back since they were from my old atrix. No problems as yet. I will try to transfer from phone to pc to see if i get the freezing. If i do, you will hear back from me. If not THanks OP:good:

try to format it using your pc. (as a FAT32)

format 64GB
What you should do is download a free partitioner program like Easeus Parttition manager. You should make two partitions on your sd card with a max of 32 GB. Format both of them as Fat 32. Once done, put it back in your phone, it is now recognized and you can reformat the card in your phone. It pops up as a 64 GB card now.
Good luck.
bigdyl69 said:
Hi all, this may have been asked a thousand times but I cannot find a definitive answer to this. I bought a 64GB Sandisk Micro SD Class 6 card to use for all my games and stuff. I received it today and tried putting it in my phone. It always shows as damaged card, so I tried the proper steps of pulling down the notification bar, selecting the card and the phone told me it would need formatting, so I clicked format.
But to my dismay the bloody phone formatted the internal USB storage so I lost all my pictures and personal stuff!!!
To add insult to injury, I cannot get this bloody card to format and work no matter what I try. I haven't formatted or partitioned it in my PC, only tried through the phone.
Please, please can anyone help???
Click to expand...
Click to collapse

The ultimate solution !!!!!!!!!!!!!!!!
First u have to use an external card reader coz 99% of the problem is that i mean do not use ur laptop card reader but use a multicards reader coz laptops card reader r not designed for micro sd 64Go once u plug in ur micro Sd u should run a small software BOOTICE ( it's been attached to this post ) , u will see the real size right after in th picture 1
Fist u should update ur exFAT ( look to the attached files)
after that follow the steps on pic 2 , 3 , 4 ...the idea is to reformat ur card with single partition with exFAT and not FAT32 the exFat is an update given with microsoft it's been attached also.
Remember the prob comes from ur card reader and always use an external cards reader like the one used to format ur sdcard ....if u have any other question am here
warm regards

Nice! thx

moad27 said:
First u have to use an external card reader coz 99% of the problem is that i mean do not use ur laptop card reader but use a multicards reader coz laptops card reader r not designed for micro sd 64Go once u plug in ur micro Sd u should run a small software BOOTICE ( it's been attached to this post ) , u will see the real size right after in th picture 1
Fist u should update ur exFAT ( look to the attached files)
after that follow the steps on pic 2 , 3 , 4 ...the idea is to reformat ur card with single partition with exFAT and not FAT32 the exFat is an update given with microsoft it's been attached also.
Remember the prob comes from ur card reader and always use an external cards reader like the one used to format ur sdcard ....if u have any other question am here
warm regards
Click to expand...
Click to collapse
Hi,
Thanks for your idea, but i'm trying to get my SD as FAT32, but i'm having trouble seeing the full card. Is there anything you can suggest? My card is showing up as 27GB when formatted as exfat, it's 59GB (64GB)
My aim is to use an AOSP rom and i am unable to use the exfat file system.
Any help would be greatly appreciated.
Thanks.

[Q] how to move files from ext2 partition from one SD card to another ?

I just recently bought a new 16GB SD card. I previously had a 8GB which I had partitioned. So how to transfer my apps from the ext2 partition of my old SD card to my new SD card ? Please help it's urgent...

And also I have about 1.80GB left on my old SD card. But look at the screenshot below. When I am using root explorer it says i can't overwrite apps(.apks) as I am out of storage (520KB left). But I had already partitioned this SD card dedicating 1GB for internal. Is this because my partition is full ? My internal memory from system/app in settings says I still have 164MB left. So how come root explorer is finding only 520KB free. See screenshot below. I need help guys
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Would really appreciate any help

Any help guys ? My question is very simple: How to transfer my apps and data which is on my partition on my 8GB SD card to my new one ?

Use a windows app like partition wizard, it's free just Google it. Use an adapter for one card, put the new one in your phone and connect to your pc. There's a function to copy a partition, use that.

Can anyone tell me if I can use Titanium back-up or do a nandroid back-up and restore it in my new SD card for this operation ? Which method is the best ?

Teshand said:
Can anyone tell me if I can use Titanium back-up or do a nandroid back-up and restore it in my new SD card for this operation ? Which method is the best ?
Click to expand...
Click to collapse
i just love it when i can help someone:
ok here is the deal
i had the stock 8GB card with 2GB for 2nd partition so i bought a new 32GB and i needed to move the old 2nd partition's data to the new sd's
all you have to do is to do a nananroid to your old sd so that it will backup your 2nd partition
now move your /clockworkmod folder to PC and then partition the new sdcard with any size you wont (2gb is very typical)
move the /clockworkmod folder to the new sd and go to recovery>>backup and restore>>advanced restore and select "sd-ext"
and now you have you 2nd partition data as they were:angel::angel::angel:
pm me if you need help with that or more detail:angel:

omtay2311995 said:
i just love it when i can help someone:
ok here is the deal
i had the stock 8GB card with 2GB for 2nd partition so i bought a new 32GB and i needed to move the old 2nd partition's data to the new sd's
all you have to do is to do a nananroid to your old sd so that it will backup your 2nd partition
now move your /clockworkmod folder to PC and then partition the new sdcard with any size you wont (2gb is very typical)
move the /clockworkmod folder to the new sd and go to recovery>>backup and restore>>advanced restore and select "sd-ext"
and now you have you 2nd partition data as they were:angel::angel::angel:
pm me if you need help with that or more detail:angel:
Click to expand...
Click to collapse
uve alot of stuff that i couldnt understad im slow learner and mad as i need away to move apps to sd card ive just installed ics which is driving me crazy any thoughts about this

Mr.Doc said:
uve alot of stuff that i couldnt understad im slow learner and mad as i need away to move apps to sd card ive just installed ics which is driving me crazy any thoughts about this
Click to expand...
Click to collapse
here is a step by step detail:
1-your device need to be rooted and bootloader unlocked
2-bacup the contents of your sd to your pc
3-go to your clockworkmod recovery
4-go to advanced>>partion sd card>> and chose the size that suit you(2GB is perfect even for an app addict) and after that it will tell you to choose the swamp partition choose 128MB (not more)
5-now install a free app from the market called link2sd and when you open it choose all your user apps and choose (create link) and link every thing
6-now all your apps will be on the 2nd sd partition
pm me if you need more help i will be glad

I think you may have missed a step... don't you need to copy the nandroid backup to the new SD card and the restore it from there, after it has been set up with the partitions?

You can copy partitions easily with MiniTool Drive Copy tool.
use 2 card-readers

same issue
great help man!

If you want to know how to move files from one hard drive to another you can try the freeware of AOMEI Partition Assistant. Within only several clicks you can finish the transfer. Meanwhile, this software is free from bundleware and popup ads.

[Q] 64GB SDXC card not working

I have an AT&T SGH-i747, I ordered a class 10 64GB SDXC card, when I put it in my phone it says "preparing sd card", then immediately says "it is now safe to remove your sd card". After several attempts to format the card (FAT, FAT32, exFAT and NTFS, which my computer does recognize) it started to tell me that my card was removed and to please insert another one once I insert it. There has never been an option to format the card in the storage section of settings, only to mount it, which yilded this result "prepating sd card" then immediately said "it is now safe to remove your sd card". I have serched through posts on this site and others, they all work under the premise that the card is no good and to exchange it, but my computer reads it just fine, so the card an't be bad, or they say that it comes formatted with exFAT which certain ROMs can't read, but I formatted it to FAT32 with no results. I am running Ariel ROM 2.07 with Ktoonzes Kernel. Any assistance you could provide would be GREATLY appreciated

64 GB SD card isn't compatible with a 16gb GS3.
Sent from my SGH-I747 using Tapatalk 2

Kofmasterkof said:
64 GB SD card isn't compatible with a 16gb GS3.
Sent from my SGH-I747 using Tapatalk 2
Click to expand...
Click to collapse
Total bull****.. where did you come up with that. Most likely he got s bad or fake card. Where did you buy it. I am on stock leaked lh1 firmware and my card I got from tigerdirect worked right out of the box. No reformat.. put in computer and copied old 32gb card contents and then.put in phone.
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Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

Have you tried verifying the card's indicated space and speed? If you received a faulty or fake one, files would rewrite over and over again on something like 1gb of data (causing some files to not be readable). As asked above, where did you get the card from?
Sent from my SGH-I747M using xda premium

If you have e a custom kernel I.e faux, chances are it doesn't support exFAT.. In fact.. Most winxp computers don't either...
Assuming ur card is legit you need to get an adaptor and put it in a computer and format it to FAT.
I had the same problem with my sandisk 64 gb class 10.
I'd you look at my posts you will find step by step instructions on software I used etc.. Can't find it now on my phone.
Once you format it to FAT, it will work just fine. Assuming of course the card isn't defective
Sent from my SAMSUNG-SGH-I747 using xda premium

updates
I got the card from some Amazon vendor, the first one didn't work at all, returned it and bought from a different Amazon vendor. Poped it in the phone and it says "preparing sd card" then immediately "it is now safe to remove your sd card". In storage settings I have the option to mount the card, but I just get those two messages again. Formatted to FAT32 because I saw exFAT was propriety from MS with the same results, I used minitools partition manager I believe it's called. My computer was able to read and write to the disk until I allowed Windows to reformat it to ntfs, which took hours to reach 25 percent so I force canceled the format and pulled the card. From that point forward minitools said it was a bad disk and Windows froze when it would try to read it. I am using a Windows Vista computer which does not give me the option to format the disk to FAT32, only exFAT and NTFS. I am running Ariel 2.07 ICS with KToonzes kernel. I have a rooted stock nand backup or am willing to change ROM's if it has something to do with that, can't test that though as I've already returned the card. I also would rather not spend $100+, I'd rather just get a 32GB for $20. Thanks for all your help so far, I hope this helps you help me.

Fat?
waiters said:
If you have e a custom kernel I.e faux, chances are it doesn't support exFAT.. In fact.. Most winxp computers don't either...
Assuming ur card is legit you need to get an adaptor and put it in a computer and format it to FAT.
I had the same problem with my sandisk 64 gb class 10.
I'd you look at my posts you will find step by step instructions on software I used etc.. Can't find it now on my phone.
Once you format it to FAT, it will work just fine. Assuming of course the card isn't defective
Sent from my SAMSUNG-SGH-I747 using xda premium
Click to expand...
Click to collapse
You suggest using FAT, not FAT32?

rjvecchio said:
You suggest using FAT, not FAT32?
Click to expand...
Click to collapse
sorry, i think it was FAT32
and this is how i did it

rjvecchio said:
I got the card from some Amazon vendor, the first one didn't work at all, returned it and bought from a different Amazon vendor. Poped it in the phone and it says "preparing sd card" then immediately "it is now safe to remove your sd card". In storage settings I have the option to mount the card, but I just get those two messages again. Formatted to FAT32 because I saw exFAT was propriety from MS with the same results, I used minitools partition manager I believe it's called. My computer was able to read and write to the disk until I allowed Windows to reformat it to ntfs, which took hours to reach 25 percent so I force canceled the format and pulled the card. From that point forward minitools said it was a bad disk and Windows froze when it would try to read it. I am using a Windows Vista computer which does not give me the option to format the disk to FAT32, only exFAT and NTFS. I am running Ariel 2.07 ICS with KToonzes kernel. I have a rooted stock nand backup or am willing to change ROM's if it has something to do with that, can't test that though as I've already returned the card. I also would rather not spend $100+, I'd rather just get a 32GB for $20. Thanks for all your help so far, I hope this helps you help me.
Click to expand...
Click to collapse
It appears to me that when you forced cancel, your 64GB micro usb got corrupted (which should not have happened, but did) that's why your Windows cannot read it. May be some one with a Win7 machine can reformat it for you. It could be something real simple like the MBR string on your card.

If it is taking hours to format NTFS then there is still something wrong with your new card as well
Sent from my SAMSUNG-SGH-I747 using Tapatalk 2

Kofmasterkof said:
64 GB SD card isn't compatible with a 16gb GS3.
Sent from my SGH-I747 using Tapatalk 2
Click to expand...
Click to collapse
My S3 clearly allowed up to 64 GB micro USB SD add on.

Oh Wellz
waiters said:
sorry, i think it was FAT32
and this is how i did it
Click to expand...
Click to collapse
I guess I just got two bad cards then, or maybe the mini tools is to blame... guess I'll try it one more time. Thanks everyone.

I formatted my Sandisk 64GB MicroSDXC card to FAT32 (64k cluster size) with GUIFormat ( http://www.ridgecrop.demon.co.uk/index.htm?guiformat.htm). Even after that, it took some finagling to get it to work. I think I had to clear dalvik and also clear cache and data for the media related system apps... after that and a couple reboots (to force a media scan), it worked fine since. Make sure to allow enough time between reboots to allow media scan to complete (around 15 mins should be plenty), otherwise the media data may get out of whack again. Keep in mind that if you format your card correct BEFORE flashing your ROM, you probably won't have to jump through hoops to get your media data corrected.
Sent from my SAMSUNG-SGH-I747 using xda app-developers app

[How To Fix] Micro SD Card UHS1 Bad Unmount

after several days using XZL, i think i need to enlarge my storage in my phone and i buy microSD Sandisk 32GB Class 10 UHS1 but after received my card im facing some issue with my card it always bad unmount when i play game or opening camera, it happen to me for a month and very annoying.
i tried several tools in XDA Forum (i read this thread) and install exFat support for my phone but unfortunattely it always happen again and again :crying:
when i tried to copy a file or several file to my microSD its very slow, but this is class 10 UHS1 card and after formatted with this tool its very amazing the speed copying file is more faster.
how to solved it ?
1. put your card from the phone
2. Backup your Data first! it must!
3. Download SD Formatter 4.0 where support SDXC Card
4. install the software SD Formatter 4.0
5. then format your card, Format Type choose Full Erase, Format size adjustment choose Off
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7. and now restore your backup and you can use it in your phone.
# bad unmount sometime happen when mediascan running, you cant disable media scan with this tool Rescan Media ROOT.
# you can put .nomedia file in folder (microSD), where you want skip that folder when mediascan run.
*sorry for my bad english.
hope it will help everyone where facing this issue :good:

Hi, Kick.
It's a great and clear tutorial. Congratulations!
Maybe I'm wrong but I think you need Android 4.2.2+ for full SDXC support, and you can also format your card directly in your mobile.

Andre Verissimo said:
Hi, Kick.
It's a great and clear tutorial. Congratulations!
Maybe I'm wrong but I think you need Android 4.2.2+ for full SDXC support, and you can also format your card directly in your mobile.
Click to expand...
Click to collapse
No mate, it happen too with my friend phone where on 4.2.2
I've tried formatted from the phone but when bad unmount happen it take to long to remount,
But after formatted with this tool its look fix my card.

kickthefreak said:
No mate, it happen too with my friend phone where on 4.2.2
I've tried formatted from the phone but when bad unmount happen it take to long to remount,
But after formatted with this tool its look fix my card.
Click to expand...
Click to collapse
I've installed a Sandisk SDXC 64 Gb and the mobile keeps unmounting it when I copy a great volume of files, even after formatting the disc with this utility. Really don't know how to solve this (and I'm in Stock 423).

Andre Verissimo said:
I've installed a Sandisk SDXC 64 Gb and the mobile keeps unmounting it when I copy a great volume of files, even after formatting the disc with this utility. Really don't know how to solve this (and I'm in Stock 423).
Click to expand...
Click to collapse
copy from internal to microSD ? some thread said if 4.2.2 have support exFat, how many GB your file ? more than 4GB your card must be in exFat system.

kickthefreak said:
copy from internal to microSD ? some thread said if 4.2.2 have support exFat, how many GB your file ? more than 4GB your card must be in exFat system.
Click to expand...
Click to collapse
The problem happens when I copy many (400+) little (< 400 Kb) files at once from the computer to the exFAT formatted SDXC SD Card, either in MTP or in MSC USB mode.

Andre Verissimo said:
The problem happens when I copy many (400+) little (< 400 Kb) files at once from the computer to the exFAT formatted SDXC SD Card, either in MTP or in MSC USB mode.
Click to expand...
Click to collapse
oh, i always take my SD card (unmount first from my phone, if not it will damage the card) and put to my pc when i need copying many file, it more faster than using USB connection
if you using usb connection, phone will run media scanner when you copying the file.

kickthefreak said:
oh, i always take my SD card (unmount first from my phone, if not it will damage the card) and put to my pc when i need copying many file, it more faster than using USB connection
if you using usb connection, phone will run media scanner when you copying the file.
Click to expand...
Click to collapse
EDIT:
I tested carefully now, and discovered that the problem occurs even when I copy files between the SD Card and the internal memory, even if I disable Media Scanner with Rescan Media.
It seems you're right about the computer. I removed my SD Card, inserted in the computer, and could copy a whole universe of files without problem. It proves that the problem isn't in the SD Card. But I need a better solution than remove the SD Card every time I want to use it (to avoid wearing the socket, the card etc).
It should work faultless from factory. It's a sad thing that we are having this trouble.

Andre Verissimo said:
EDIT:
I tested carefully now, and discovered that the problem occurs even when I copy files between the SD Card and the internal memory.
It seems you're right again. I removed my SD Card, inserted in the computer, and copy a whole universe of files without problem. It proves that the problem isn't in the SD Card. But I need a better solution than remove the SD Card every time I want to use it (avoiding wearing the socket, the card etc).
It should work faultless from factory. It's a sad thing that we are having this trouble.
Click to expand...
Click to collapse
yes problem occur when we copied file (many) from internal to ext-card, i think thats defect from the product or system, have you tried another microSD class 10 (not UHS) ?
try this --> put .nomedia file in folder (microSD), where you want skip that folder when mediascan run.

kickthefreak said:
yes problem occur when we copied file (many) from internal to ext-card, i think thats defect from the product or system, have you tried another microSD class 10 (not UHS) ?
try this --> put .nomedia file in folder (microSD), where you want skip that folder when mediascan run.
Click to expand...
Click to collapse
No luck with .nomedia here, nor when I disable Media Scanner with Rescan Media.

SD card corruption issue on Lineage OS 14.1 on Harpia Moto G4 Play XT1602

It's been a while since I had been using Lineage OS on my Moto G4 Play and apart from losing VoLTE, everything seemed to work fine EXCEPT my external SD card. On my stock ROM, i had my Sandisk 32 GB Class 10 card formatted as internal storage and it worked flawlessly.
I did the same in Lineage OS but everytime, after a month or even few weeks, the SD card gets permanently corrupted. First time it happened, I thought it was the SD card issue, got a brand new one on RMA. Happened the second time, again got a new one and this is the third time it has happened. I find it really hard to believe that cards which were brand new got totally fried up 3 times as a coincidence or fate.
I think, there is either some problem with the OS itself or the phone. XDA folks, help me out. I feel ashamed sending the card for a third RMA.

sng_shivang said:
It's been a while since I had been using Lineage OS on my Moto G4 Play and apart from losing VoLTE, everything seemed to work fine EXCEPT my external SD card. On my stock ROM, i had my Sandisk 32 GB Class 10 card formatted as internal storage and it worked flawlessly.
I did the same in Lineage OS but everytime, after a month or even few weeks, the SD card gets permanently corrupted. First time it happened, I thought it was the SD card issue, got a brand new one on RMA. Happened the second time, again got a new one and this is the third time it has happened. I find it really hard to believe that cards which were brand new got totally fried up 3 times as a coincidence or fate.
I think, there is either some problem with the OS itself or the phone. XDA folks, help me out. I feel ashamed sending the card for a third RMA.
Click to expand...
Click to collapse
To my experience we have better stability when using SD as portable storage. And it's easier to repair using a PC.

The solution I found is.
1- have rooted phone 2- enable usb debugging 3- format sd card from Android options as portable . 4- format sdcard as fat32 or ext4. (Fat32 preferably- most recommended) 5) Check sdcard current format with app called disk info . Avoid NTFS format ( this could be the reason it's not formatting as internal storage, Android doesn't support NTFS as internal , and works bad with it as portable) Inside the app check the path of your sdcard.
Download app2sd from somewhere.
use the Partition tool ( as adoptable) inside to create 2nd partitions as vext4
Choose adoptable option and create 2nd Partition as ext4 ( it will actually create a virtual ext4 partition)
choose how much size in each Partition Partition 1 will be internal . Partiion 2 will be external.
So give more than 50% size to 1st Partition this way you might avoid more problems
Press create, you're done.
This method persists for me after reboots.
Thank me from your prayers if it helps.
Details --> go check storage & usb or use disk info to see your new expanded storage size with your new unmounted virtual disk and smile. This new Partition can only use installed apps, but you can't browse it's contents through your Android usb & storage options ( since it's virtual and we're tricking the fuse encryption config) If you actually want to browse this new virtual internal Partition and access it's contents you will have to see the path through disk info APK and access it with root file manager like Total Commander.
Also Do a chkdsk /f from Windows on the sdcard or chkdsk /r to see if the problem is the sdcard or try it in another Android Phone as internal. If it doesn't work in other phones then you know it's the card malfunctioning and not the phone.
This is the dumb error preventing you/us from having persistent storage.
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This is how it looks after applying solution.
That phone came with 16gb storage. Now I added 16gb more with this method , for 32gb total
- Partition 1 with 13gb as virtual internal and Partition 2 as portable with 3 gb remaining. (The virtual Partition cannot be seen, it says 3gb/16gb when actually it should say 0gb/13gb) It's cause I managed to bypassed this encryption