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  1. Thread Author  Thread Author    #1  

    Default [SOLVED] [ANDROID] What to do if sd card is mounted read-only/canít write to the sd card

    INTRO

    This info may help you if the following is true:
    - up until now youíve had no issues when using your sd card
    - all of a sudden you can no longer write to the card, perhaps along with an error message being reported that indicates the sd card is mounted read-only

    This is another one of those situations where it is not necessary to take extreme measures such as doing a complete reformat, or outright replacing the cardÖas suggested in the many threads on this subject.

    Here are the facts. Your sd cardís file allocation table (FAT) has some kind of error. Itís an android-thing that crops up once in a while. Because of this FAT error, the card automatically gets mounted read-only, and no matter how many times you go into settings and try to unmount/remount the card, it is to no avail.

    SOLUTION

    Fix the FAT
    - connect device to your PC (USB connection) and make sure itís set so that you can copy files to/from your computer (on my device in the notification panel thereís an option to do this under ďUSB connectedĒ)
    - on your pc, open windows explorer (or click on start->computer), then right click on the mapped drive to your sd card Ė you may have to wait a minute or two for the mapping to take effect
    - select Properties
    - select Tools
    - select Check nowÖ (for error checking) to automatically fix file system errors (no need to deal with bad sectors at this time)
    - when completed (takes a minute or so), the FAT will be in working order once again. No files are deleted during the process, so no need to worry about that.
    - safely disconnect the device from your pc, at which point the sd card will now be mounted read-write and youíre good to go
    Thanked by:
    manbat2 likes this.
  2. #2  

    Default Re: [SOLVED] [ANDROID] What to do if sd card is mounted read-only/canít write to the sd card

    Hello sir ,
    I tried to fix the problem following all steps but it didn't work cause it couldn't open support center ..don't know the problem is in my pc or in my device .
    please reply
  3. #3  

    Default Re: [SOLVED] [ANDROID] What to do if sd card is mounted read-only/canít write to the sd card

    Omg thank you sooooo much i rlly appreciate this i had this prob for a while u fixed it thanks you!!!!!!!!!!!!!!!!!

    - - - Updated - - -

    what? your doing somthing wrong, what support center? you don't have to open any support center?
  4. #4  

    Default Re: [SOLVED] [ANDROID] What to do if sd card is mounted read-only/canít write to the sd card

    My SD card is on a camera. I tried your technique, in addition to reformatting the card via computer, file sharing with "everyone", and none of these techniques work. I click off the grayed out protection and it comes back. File sharing with "everyone" appears to stick but does not. Interestingly enough, even though the card is a grayed out "read-only", I can still manipulate the disk directories and files on the computer. The sharing info shows the computer name.
  5. #5  
    Rukbat's Avatar

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    Default Re: [SOLVED] [ANDROID] What to do if sd card is mounted read-only/canít write to the sd card

    If you have the FAT problem more than once, it could be an indication that the card is going bad. (The FAT is one of the most written-to areas on the card.) At that point, make sure that you have every single file that you may ever want backed up onto your computer. Then when the FAT finally goes bad (and if it's a good manufacturer, they may even replace the card for free), you won't lose your data.

    Remember, even though SD cards have a huge number of write cycles, it IS a finite number, and every SD card will eventually go bad. You can replace the card, but you can never replace the picture of your granddaughter's first step. Data you don't have backed up to at least 2 independent places is data that you really don't need.
  6. #6  

    Thumbs up Re: [SOLVED] [ANDROID] What to do if sd card is mounted read-only/canít write to the sd card

    Thanks a ton...I was scratching my head of because of this problem. I have rooted my android phone n had recovered apps through Titanium backup. But recently I couldnt download watsapp files to my phone and neither could install any apps on my phone. I was getting the error Could not install on sdcard or usb. That problem is solved now by following the sdcard permission problem. All my probs are solved for the moment.
  7. #7  

    Default Re: [SOLVED] [ANDROID] What to do if sd card is mounted read-only/canít write to the sd card

    Quote Originally Posted by 9671111 View Post
    INTRO

    This info may help you if the following is true:
    - up until now youíve had no issues when using your sd card
    - all of a sudden you can no longer write to the card, perhaps along with an error message being reported that indicates the sd card is mounted read-only

    This is another one of those situations where it is not necessary to take extreme measures such as doing a complete reformat, or outright replacing the cardÖas suggested in the many threads on this subject.

    Here are the facts. Your sd cardís file allocation table (FAT) has some kind of error. Itís an android-thing that crops up once in a while. Because of this FAT error, the card automatically gets mounted read-only, and no matter how many times you go into settings and try to unmount/remount the card, it is to no avail.

    SOLUTION

    Fix the FAT
    - connect device to your PC (USB connection) and make sure itís set so that you can copy files to/from your computer (on my device in the notification panel thereís an option to do this under ďUSB connectedĒ)
    - on your pc, open windows explorer (or click on start->computer), then right click on the mapped drive to your sd card Ė you may have to wait a minute or two for the mapping to take effect
    - select Properties
    - select Tools
    - select Check nowÖ (for error checking) to automatically fix file system errors (no need to deal with bad sectors at this time)
    - when completed (takes a minute or so), the FAT will be in working order once again. No files are deleted during the process, so no need to worry about that.
    - safely disconnect the device from your pc, at which point the sd card will now be mounted read-write and youíre good to go
  8. #8  

    Default Re: [SOLVED] [ANDROID] What to do if sd card is mounted read-only/canít write to the sd card

    butnot sure where to startHi i was hoping you could help with the sd card read error you spoke about on here and might know how to fix it but using Windows 8 would like to follow the steps. but not sure where to start. Thanks
  9. #9  

    Default Re: [SOLVED] [ANDROID] What to do if sd card is mounted read-only/canít write to the sd card

    work perfectly thanks for that info.....even though i wasn't the one that ask
  10. #10  

    Default Re: [SOLVED] [ANDROID] What to do if sd card is mounted read-only/canít write to the sd card

    Quote Originally Posted by motazabualeme View Post
    Hello sir ,
    I tried to fix the problem following all steps but it didn't work cause it couldn't open support center ..don't know the problem is in my pc or in my device .
    please reply
    What Android version are you running?

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