Need solution for SD Card read only problem - Xiaomi Redmi 4X Questions & Answers

I'm using Transcend 32GB SD card with my Redmi 4X (MIUI 9 Global). Suddenly it become write protected and I can't copy, paste & delete. It even refused to format. I've tried to format/wipe it with sd card formatter, EaseUS partition master, command prompt, TWRP and with my phone. Nothing could format it.
Please help me. Thanks in advance.

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Recover Kingston 4GB Storage Card

Hi everyone i need help here to sort out my lost Micro SD Card For My GENE I Was Using IT When Suddenly My phone Switched Restarted When I checked My File Explorer It does not Shown My card When i put it on card reader it first shows disk is not formatted do you want to format when i give yes it gives error that windows cannot format the drive and another sad thing is it shows the size of the disk as 2.0kb only any body please trouble shoot i request all senior members to help......
try to format the card using disk management utility
Thanks Vibhav but dint got solution
hello thanks for reply but i didn't get solution i tried but it does not show only
try to use this soft EASEUS Data Recovery Wizard Professional 4.3.6
my sd card also got same problem.
Try USB Card reader. In case the USB Card Reader is able to recognise the SD Card, format it while connected to windows desktop/laptop.
your sd card will be not format with windows format utility, it will be format by DOS . Use this method
Open windows xp
click start --> program --> acessery -->
commond prompt
you will see a box, Type here
>format k: ( press return key)
note : k is the destination drive where your SD card ploughed
follow the instruction.... enjoy
Try Card Data Recovery. It can help you recover kingston SDHC card data

Problem with 32gb micro sdhc card

Hi, I've been having a problem with my micro sdhc card, everytime i've tried to copy music or any file it is shown on my computer, but when I use the phone most of the files dissapear, and the few ones that are shown are damaged, how can I solve this?? i've tried with 2 32GB micro sdhc and its the same
rualquivi said:
Hi, I've been having a problem with my micro sdhc card, everytime i've tried to copy music or any file it is shown on my computer, but when I use the phone most of the files dissapear, and the few ones that are shown are damaged, how can I solve this?? i've tried with 2 32GB micro sdhc and its the same
Click to expand...
Click to collapse
Did you format the card on/in the phone? Don't format it on you pc
Are you properly ejecting/unmounting/removing the device from your computer? I've had similar issues with my digital camera when I forget to eject he card from my Linux computer. I think the files don't get closed properly. May not have anything to do with your problem...
rualquivi said:
Hi, I've been having a problem with my micro sdhc card, everytime i've tried to copy music or any file it is shown on my computer, but when I use the phone most of the files dissapear, and the few ones that are shown are damaged, how can I solve this?? i've tried with 2 32GB micro sdhc and its the same
Click to expand...
Click to collapse
Hi, I have had the problem with class10 sdhc card. it randomly lost data (or whole sd card unmounted when locked screen). I use class 4 instead. However, lost data appeared (a week ago) too - and it was (perhaps) because I didn't "eject" before unplugging... but usually I don't do it, and everything was ok.
Sent from my DROID3 using Tapatalk 2
32gb Micro SDHC card is not detected by phone and unable to format in PC
Hi,
I bought a Sandisk 32gb Micro SDHC card with class 4.. I try to make a partition on it using MiniTool Partition Wizard Manager into primary FAT32 & Ext2 for my android phone. Now it is not detected by my android phone. So I tried with windows phone.Result is same.Then I try to connect it through a USB card reader to my PC. It asks for Formatting the removable disk.When I try to format it in basic FAT,NTFS or exFAT it shows only 30.6 mb capacity and a prompt message "Windows was unable to complete format". I tried various way to format from the command prompt, Disk Manager, SD formatter 3&4, please can anyone help...
SanDisk 32gb MicroSDHC card damage after unsuccessful partition unable 2 format on PC
Hi,
I bought a Sandisk 32gb Micro SDHC card with class 4.. I try to make a partition on it using MiniTool Partition Wizard Manager into primary FAT32 & Ext2 for my android phone. Now it is not detected by my android phone. So I tried with windows phone.Result is same.Then I try to connect it through a USB card reader to my PC. It asks for Formatting the removable disk.When I try to format it in basic FAT,NTFS or exFAT it shows only 30.6 mb capacity and a prompt message "Windows was unable to complete format". I tried various way to format from the command prompt, Disk Manager, SD formatter 3&4, please can anyone help???
bkonthoujam said:
Hi,
I bought a Sandisk 32gb Micro SDHC card with class 4.. I try to make a partition on it using MiniTool Partition Wizard Manager into primary FAT32 & Ext2 for my android phone. Now it is not detected by my android phone. So I tried with windows phone.Result is same.Then I try to connect it through a USB card reader to my PC. It asks for Formatting the removable disk.When I try to format it in basic FAT,NTFS or exFAT it shows only 30.6 mb capacity and a prompt message "Windows was unable to complete format". I tried various way to format from the command prompt, Disk Manager, SD formatter 3&4, please can anyone help???
Click to expand...
Click to collapse
I have the same problem, any answer about how to solve this?
thnx
Does your phone let you format it?
Sent from my DROID3 using xda app-developers app
Help urgent
I know im off topic but.I cant flash cyanogenmod10 Final (Xperia Play) using my sdhc But when i flash it with other sd it works...Please help.Im using Lupus Jb v8 Kernel
Same problem here. However im able to view all the data but i cant remove it, or format. I think i have tried all the programs availeble.
Please help.

Micro SD suddendly removed

Hello all. I just got my new L90, Android 4.4.2, Kernel 3.4.0 +, V10a.
I inserted the sd card i had in my former LG L9 P768, and now the message pops frequenty up " The micro sd card was suddendly removed, please deactivate the card before removing" then the card is mounted again. The card has a second ext2 partition, which i used in my older phone for LinktoSD.
Any hints? Thanks for your help.
Hi. Delete everything few times. It should help.
1. Tap System settings.
2. Scroll down to General,' and then tap Storage.
3. Tap Erase SD card.
4. Tap Erase SD card again.
5. Tap Erase everything to confirm.
In the beginning I also had this problem (with my previous sd card), it was a bad contact. I putted a pice of paper between, problem solved.
(also did the tips above)
Problem solved
Thanks for you help. The problem was that the second partition on my SD was ext2, and maybe corrupted, who knows...
After formatting the second partition to FAT the card has up to now remained mounted and i had no more problems. Even the battery lasts longer now.

[Q] HELP plz!! Lumia 635 only 200mb partition on 8gb micro sd card

In my Lumia 635 i put an 8gb micro sd card in it and it says "cant use sd card" upon turning the phone on... So i use the option there to format the sd card.... after the phone formats it, it has 256.00kb used 199.67mb free... So my phone has made a single 200mb partition on my sd card.... So then ill take the sd card out and reformat it on my computer to 8gb again and put it back in the phone and the phone says "cant use sd card again" and the same thing again... I've used many different formatting tools.. SDFormatter v4.0, BOOTICE, Windows Disk Manager, etc... but nothing seems to work.... Please help me someone...
jwalls5096 said:
In my Lumia 635 i put an 8gb micro sd card in it and it says "cant use sd card" upon turning the phone on... So i use the option there to format the sd card.... after the phone formats it, it has 256.00kb used 199.67mb free... So my phone has made a single 200mb partition on my sd card.... So then ill take the sd card out and reformat it on my computer to 8gb again and put it back in the phone and the phone says "cant use sd card again" and the same thing again... I've used many different formatting tools.. SDFormatter v4.0, BOOTICE, Windows Disk Manager, etc... but nothing seems to work.... Please help me someone...
Click to expand...
Click to collapse
Hi there, have you ever 'played' with this sd-card, as in partitioning ?
I recommend you try the GParted Live-cd, (also found on Hiren's (restored) 15.x).
steps to take:
-Clean the whole card (remove partitions)
-Create one (and only one) contiguous partition (FAT32)
-Place the card back into the phone, format from there
Please let us know if this works for you (and us) :fingers-crossed: If not, the card might be fried, or worse, the cardreader in your phone... Anyway, for about 10 bucks you can try a brand new card...

[Guide] Note 4 External SD Fix For exfat formatted SDXC and U1 Higher Than 32gb

Nice Day Guys And Fellas!
I'm Here Today With Another Guide, hope It will find people who need it and be useful to them.
I found the possible solution for Note 4 SDcard Issue after dealing so much with it, posting here it may help some people.
History :
If you own an SDXC or 64GB SD card or higher with exfat you probably faced suddenly disappearing all the sd card contents where says the sd card is empty and after a reboot it shows the content, Or either later indicates SDcard is currupted, mine started with this issue right after buying a fresh SDXC and formatting it using Windows, Note 4 and etc goes to same scenario after some time, it actually happens because Note 4 and Windows formatting SD Card using exfat FS.
In this guide you need a windows PC or TWRP or Mac at your choice.
Steps to fix the issue :
I assume only high speed sd cards (SDXC and U1+) with exfat larger than 32gb are problematic with note 4 and smaller size than 64gb can be formatted to Fat32 without any tools already in Windows, so this guide is intended for high end ones, like the one i had Silicon Power SDXC U1 Elite class 10
Metod 1: (recommended)
1. Detach your MicroSD card (most known to be problematic type sd is SDXC)
2. Insert it to SD Adapter place to your laptop (if your computer has no dedicated sd slot attached to motherboard better use a laptop otherwise use Card reader) and remember drive letter
3. Store your sd content to your pc to restore later.
4. Download EaseUS partition master (free or other type) all will do the job
5. Right click on the right drive letter corresponding for your SD Card and select Format
6. Give it a name Like "SDcard" or what you like then select Fat32 for file system, finally select 64kb for cluster size, and press OK button
7. Finally press the apply button in top left and magic happens
8. Now you can place back your files, your sd card is ready.
Method 2 TWRP
1. Backup your data in an OTG drive or Internal storage or cloud.
2. Boot into the TWRP select wipe menu
3. Push advanced wipe, select MicroSD card, push change File System button.
4. In this menu choose Fat and press the button, wait for it till the a message says successful appear.
5. Now boot to your system and you'll notice it's fixed and you can place your files back.
Method 3 Using Mac OS X:
If you own a Macbook or iMac or anything similar just attach your SD card to it using its Adapter then run the "Disk Utility" app in others folder or type it in Spotlight (don't forget to take a backup already) then Select erase button on the sd card and use Fat in the menu, just you need to do it Twice, then you'll good to go.
I was able to do that in Sierra with latest updates.
As the final note let me know your experience with this guide and if it helped you or unfortutly not.
If you find this article helpful don't forget to :good: press thanks button or send me some good and positive energy :fingers-crossed:
I have also a solution for sd card write permission, if needed i can mention that, but the workaround is not mine work.
I always use sd formatter 4 from sd association or formatting in Smartphone
64gb sandisk extrem - no Problem
This happens on my Note 4 Exynos N910C sometimes, with my Samsung 128GB Class 10 MicroSD card. But only when my phone is unplugged. It will sometimes show the card as having no contents (Gallery and other apps don't show SD card photos or videos, etc.) and to fix it I either have to unmount and mount the card, or reboot.
Is this the same issue?
Cyber-Logic said:
This happens on my Note 4 Exynos N910C sometimes, with my Samsung 128GB Class 10 MicroSD card. But only when my phone is unplugged. It will sometimes show the card as having no contents (Gallery and other apps don't show SD card photos or videos, etc.) and to fix it I either have to unmount and mount the card, or reboot.
Is this the same issue?
Click to expand...
Click to collapse
Yes you got same issue
Halcyon said:
I have also a solution for sd card write permission, if needed i can mention that, but the workaround is not mine work.
Click to expand...
Click to collapse
Does that Solutions imply repartitioning and adoptable storage?
Or is it a real fix for sdcard writing permission on MM and higher?
Please feel free to post
sxg75 said:
Does that Solutions imply repartitioning and adoptable storage?
Or is it a real fix for sdcard writing permission on MM and higher?
Please feel free to post
Click to expand...
Click to collapse
yes write permission for all app including ones that designed for before MM and N
Halcyon said:
yes write permission for all app including ones that designed for before MM and N
Click to expand...
Click to collapse
Ok - curious. Where is it?
Halcyon said:
Nice Day Guys And Fellas!
I'm Here Today With Another Guide, hope It will find people who need it and be useful to them.
I found the possible solution for Note 4 SDcard Issue after dealing so much with it, posting here it may help some people.
History :
If you own an SDXC or 64GB SD card or higher with exfat you probably faced suddenly disappearing all the sd card contents where says the sd card is empty and after a reboot it shows the content, Or either later indicates SDcard is currupted, mine started with this issue right after buying a fresh SDXC and formatting it using Windows, Note 4 and etc goes to same scenario after some time, it actually happens because Note 4 and Windows formatting SD Card using exfat FS.
In this guide you need a windows PC or TWRP or Mac at your choice.
Steps to fix the issue :
I assume only high speed sd cards (SDXC and U1+) with exfat larger than 32gb are problematic with note 4 and smaller size than 64gb can be formatted to Fat32 without any tools already in Windows, so this guide is intended for high end ones, like the one i had Silicon Power SDXC U1 Elite class 10
Metod 1: (recommended)
1. Detach your MicroSD card (most known to be problematic type sd is SDXC)
2. Insert it to SD Adapter place to your laptop (if your computer has no dedicated sd slot attached to motherboard better use a laptop otherwise use Card reader) and remember drive letter
3. Store your sd content to your pc to restore later.
4. Download EaseUS partition master (free or other type) all will do the job
5. Right click on the right drive letter corresponding for your SD Card and select Format
6. Give it a name Like "SDcard" or what you like then select Fat32 for file system, finally select 64kb for cluster size, and press OK button
7. Finally press the apply button in top left and magic happens
8. Now you can place back your files, your sd card is ready.
Method 2 TWRP
1. Backup your data in an OTG drive or Internal storage or cloud.
2. Boot into the TWRP select wipe menu
3. Push advanced wipe, select MicroSD card, push change File System button.
4. In this menu choose Fat and press the button, wait for it till the a message says successful appear.
5. Now boot to your system and you'll notice it's fixed and you can place your files back.
Method 3 Using Mac OS X:
If you own a Macbook or iMac or anything similar just attach your SD card to it using its Adapter then run the "Disk Utility" app in others folder or type it in Spotlight (don't forget to take a backup already) then Select erase button on the sd card and use Fat in the menu, just you need to do it Twice, then you'll good to go.
I was able to do that in Sierra with latest updates.
As the final note let me know your experience with this guide and if it helped you or unfortutly not.
If you find this article helpful don't forget to :good: press thanks button or send me some good and positive energy :fingers-crossed:
Click to expand...
Click to collapse
I have formatted the micro-SD card as you say, and when I rebooted my Galaxy Note 4, half of the things I had previously saved disappeared.

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