After 7.0 Update Nothing Can Write to SDCARD

[scottricketts]

T-Mo S2, took the nougat update, and even using "MyFiles" all attempts to write to the external sdcard fail. I can't even enable permissions for root explorer or es-filemanager pro. I'm frustrated enough to use this tablet as a weapon in a road rage incident. Anyone else seeing this or is there something I've missed along the way?

 

[scanno]

T-Mo S2, took the nougat update, and even using "MyFiles" all attempts to write to the external sdcard fail. I can't even enable permissions for root explorer or es-filemanager pro. I'm frustrated enough to use this tablet as a weapon in a road rage incident. Anyone else seeing this or is there something I've missed along the way?

Don't use supersu 2.82 SR1

 

[scottricketts]

I'm not rooted. It's totally stock

 

[tjupille]

Something's not right because I have no problems on my T713. Bone stock. I just finished copying some pix from a USB-OTG to the micro SD. Went without a hitch.

 

[siamchen]

I'm not rooted. It's totally stock

I have difficulty to write on SD card for some of the apps (such as GPS) after update. But, the file explorer and some other apps are ok. I believe the problem is caused by app permissions and needs to be solve as per app level.

 

[foreverandroid]

T-Mo S2, took the nougat update, and even using "MyFiles" all attempts to write to the external sdcard fail. I can't even enable permissions for root explorer or es-filemanager pro. I'm frustrated enough to use this tablet as a weapon in a road rage incident. Anyone else seeing this or is there something I've missed along the way?

It just a permission. It will pop up with permission request then you choose internal or external at root of storage. My can read/write from internal, microsd card, and even 1tb WD hard drive (without power) all no problem.

 

[mattlxdesign]

I'm having the same problem. I was running stock to this happened and have since rooted and tried two, (at the end of the day not very) different ROMs. Resurrection remix and Lineage OS both running nougat and neither have worked. I've tried using adb partition without success and root essentials asks me to flash ASPlugin.zip which I have tried with the flasher and through twrp. Neither works as it asks me to flash it again when I retry root essentials. No errors get thrown while flashing ASPlugin.zip.
I'm also at the point of wanting to throw my tab against the wall.
The permissions window pops up but it does not seem to effect the external SD card.

 

[tensux]

this link shows how to fix it:

https://www.youtube.com/watch?v=VJRKuQf0puE

 

[eddiek9449]

ES File Explorer Pro permits root permission, but it's not very obvious as to how it works. Execute a copy or move, you'll be prompted to go to the root of the card, click on the card link, then bottom right hand corner, click the select button and it's done.

 

[McFex]

Hi everyone.

I found this thread while searching for an answer to the same problem, which drove me almost crazy, too.
I decided to post my solution here, so that it might help others in the future.

As I said: I had the said problem, too.
No writing to ext. SD card, also no writing to my USB-stick via USB-OTG (On The Go), after updating my Tab S2 (SM-T815) to Nougat (Android 7.0) with a stock ROM and then rooting it with magisk (which btw went surprisingly well!).
I am using FX File Explorer, bought it even to be able to use it as root explorer, imho it's one of the best ones out there.

Connected to my PC I could pull or write files to my internal storage as well as to my external SD card via MTP, though.
Strange, but to those of us with just enough know-how to not brick the phone when flashing "stuff" the higher functions seem to be magical anyway, so I didn't take too much time to wonder.
I tried unmounting and mounting both SD card and USB stick, but that would not help.
Also disabeling writing acces in FX explorer and enabeling it again showe no effect. All I got was an error message "Internal Error".

The post above gave me the hint about permissions. (I couldn't watch the linked Youtube video, because my PC has no speakers atm, and I also had no headphones. Also, it looks like the video solves an intirely different problem anyways, not sure why tensux posted this here!?)

So I checked the permissions by using FX.
I went to /root then checked the permissions for /root/sdcard which were set to rwx,rwx,rwx.
Then I checked the SD card (and the USB, while I was at it anyways) via root/storage/[technical name of my SD card like 5555-2843] and /root/storage/[technical name of my USB-stick like 2234-1289] and found that both had their permissions set to rwx,rx,rx.
I marked the respective folders, went to security through the context menu, and changed the permissions to rwx,rwx,rwx in each of them. It would not stick in the grafics, meaning afterwards the permissions still showed no change, even when I restarted the Tablet, but...
I went back to the regular FX explorer and unmounted and mounted both SD card and USB-stick again. I still got the error message, only this time I tried to copy, move or delete a file there was no problem anymore, neither from or to the SD card nor the USB-stick.

After several restarts I still can write to my SD card as well as to my USB-stick, so I must have done something right.
.
Thank you XDA for being a place of knowledge, maybe I could give back a little and maybe this report helps someone else out there.

 

[ashyx]

Hi everyone.

I found this thread while searching for an answer to the same problem, which drove me almost crazy, too.
I decided to post my solution here, so that it might help others in the future.

As I said: I had the said problem, too.
No writing to ext. SD card, also no writing to my USB-stick via USB-OTG (On The Go), after updating my Tab S2 (SM-T815) to Nougat (Android 7.0) with a stock ROM and then rooting it with magisk (which btw went surprisingly well!).
I am using FX File Explorer, bought it even to be able to use it as root explorer, imho it's one of the best ones out there.

Connected to my PC I could pull or write files to my internal storage as well as to my external SD card via MTP, though.
Strange, but to those of us with just enough know-how to not brick the phone when flashing "stuff" the higher functions seem to be magical anyway, so I didn't take too much time to wonder.
I tried unmounting and mounting both SD card and USB stick, but that would not help.
Also disabeling writing acces in FX explorer and enabeling it again showe no effect. All I got was an error message "Internal Error".

The post above gave me the hint about permissions. (I couldn't watch the linked Youtube video, because my PC has no speakers atm, and I also had no headphones. Also, it looks like the video solves an intirely different problem anyways, not sure why tensux posted this here!?)

So I checked the permissions by using FX.
I went to /root then checked the permissions for /root/sdcard which were set to rwx,rwx,rwx.
Then I checked the SD card (and the USB, while I was at it anyways) via root/storage/[technical name of my SD card like 5555-2843] and /root/storage/[technical name of my USB-stick like 2234-1289] and found that both had their permissions set to rwx,rx,rx.
I marked the respective folders, went to security through the context menu, and changed the permissions to rwx,rwx,rwx in each of them. It would not stick in the grafics, meaning afterwards the permissions still showed no change, even when I restarted the Tablet, but...
I went back to the regular FX explorer and unmounted and mounted both SD card and USB-stick again. I still got the error message, only this time I tried to copy, move or delete a file there was no problem anymore, neither from or to the SD card nor the USB-stick.

After several restarts I still can write to my SD card as well as to my USB-stick, so I must have done something right.
.
Thank you XDA for being a place of knowledge, maybe I could give back a little and maybe this report helps someone else out there.

All external storage write permissions are granted on a per app basis as per Google's security specs.
If an app has issues with writing to external storage then it is the app at fault.
The developer needs to update the app with the new permissions.

I have many Android devices and for all of these devices I use Root Explorer.
This is and has always been the best Root file explorer since day one. It does what it needs to do without any silly unnecessary bells and whistles.
Any serious developer will use this app as it's proved to be the most reliable and the dev is on the ball with this app.
Never have I had an issue with it.