recently, my external_sd folder in my internal sd card acts like a normal folder which contains files that are not in the external_sd. I deleted it and tried to create a shortcut to external_sd with root browser. It said something like some sd card cannot be symblink.
please help
thank you
Google blocks the Write ability for third party apps on Android 4.4 KitKat update for uncertain reason. File managers can’t access to SD card at all and lost the ability to manage external storage completely.
However people always find a way to solve problem, although the solution may not be super perfectly.
I recently update File Expert and find it restored the ability to manage external SD card.
Download app from Google Play and open to start. I notice my external SD Card is shown under Folder Tab.External SD Card is accessible and writable again in File Expert. Click to enter, choose a file and try all basic file operations, create, copy, cut, paste, rename, delete, edit and zip file within external SD card. File Expert completes all without any error.
You can even explore more available actions for External SD Card in File Expert. Like trying move a file from internal storage to SD card, sharing files on external sdcard with FTP, Web PC Suite it will be done perfectly, without any error.
What file manager do you use right now? Or is there any file manager can do more?
It seems there is a security flaw when copying files from encrypted internal storage to encrypted sd card with third party tools.
I have installed a micro sd card and enabled encryption on external sd card. After every boot I get a notification that external sd is encrypted. If I put the sd card in a card reader on my pc, I can see the directory structue and file names on the sd, but I cannot see the contents of the file, because they are encrypted. So far this is expected behaviour.
Now the unexpected part: sd card is installed in phone (no pc involved). I copied files with solid explorer from internal storage to encrypted sd card (side note: i noticed solid explorer cannot access the copied files). I reboot my phone and suddenly it says "encrypting files on sd-card" and a percentage counter went up while the newly copied files get encrypted? Huh !? Second test: I copied files with solid explorer from internal storage to encrypted sd card and shut down the phone, put the sd card in a card reader on an pc and - guess what - the copied files are unencrypted. They get encrypted after next boot in the phone. This behaviour does not occur, if I copy the files with samsungs integrated file explorer. Files copied to the enrypted sd card over mtp connection are encrypted immediately.
I have experienced something similar. I wanted to create a directory on encrypted SD card in ES File Manager. It displayed the message like "...will be created asynchronously" and zero length file was created instead. After reboot and encryption the actual directory was created.
It seems that third party file explorers like solid explorer or ES file manager can access those files/folders (created by themselves on encrypted sd card) only after the files/folders got encrypted after reboot. The flaw I see here is not only that files unexpectedly remain unenrypted on sd card, but also that files are written unencrypted at all and only get encrypted later. There may remain unencrypted parts of sensitive data that someone might be able to recover from sd card (with a data revocery tool).
Sounds like those developers need to update their apps to support Marshmallow's encryption. In the meantime, if you've got sensitive files to copy, use the built-in app.
It seems, that there is some scheduler running encryption over the night. I created a folder on SD card as usually - no folder, only empty file was created initially - and next day there was a folder; without need of reboot.
pato said:
It seems, that there is some scheduler running encryption over the night. I created a folder on SD card as usually - no folder, only empty file was created initially - and next day there was a folder; without need of reboot.
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I tried the same yesterday. I copied a file from internal storage to encrypted sd card with solid explorer and the file is stored unencrypted with 0 byte length. 24 hours later it still remains unencrypted with 0 byte length. Maybe there is something else that triggers the encrpytion (except reboot), but not sure what it is.
EDIT: 48 hours after copying the file it finally got encrypted.
delete
I'm using marshmallow 6.0.1
I think from 5.0 lollipop moving files in external sd android/data folder is not possible. Files created by apps, mostly received from wifi sharing are stored inside android/data/<app folder> by few apps. These files cannot be directly moved to any root directory of external sd. When moving it's copying and deleting those files, like moving to another drive even thought it's the same drive .
This makes a particular problem when the external sd storage is low. For an example in order to move a 2GB file from external_sd/android/data/<app folder> to external_sd/Movies system required additional 2GB, it copies the file and then deletes the source file. So moving is not possible if the free space is below 2GB .
Internal sd android/data folder doesn't have this issue, moving files is direct and quick(without copying and deleting).
I'm guessing it's because of the owner permissions of the android/data folders and root folders . Is there any workaround to make files move without copy-moving from external_sd/android/data folder to external_sd/<any folder other than android> without root .
Hello. Did someone encounter a problem, when copying titanium backup files from inbuilt memory to SD card with es file Explorer? The file format like .gz and .properties are automatically changed to .zip format and all TB files become unusable and unrewertable to the original format. If doing the same operation with inbuilt file Explorer, all is OK. Any thoughts??