Questions tagged [file-system]

A file system is the logical structure to organize (store, retrieve and update) data on a storage device.

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872 views

Why is the '/storage/emulated/' directory inaccessible?

The /storage directory and the /storage/emulated/0 directory is accessible in a non-rooted Android OS. So, why is the /storage/emulated directory not accessible in a non-rooted Android OS ?
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Is it possible to change file permissions on Android's internal storage?

How can I change file permission of a file on Android without rooting? I actually want to prevent some files from deletion. Note: I am asking of changing the file permissions of user-created files in ...
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238 views

Why files/directories under Android's root filesystem don't change across different version updates?

I compared 2 devices; one running Android v5.1.1 and other v9.0. So I noticed that files under /proc are same in both. Can anyone explain why there is no difference even though OEM's are different and ...
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45 views

Audio files disappeared from S8!

Don't know how long ago the files disappeared or whether it has to do my the Oreo upgrade recently; or using the phone's "fix now" button to delete leftover files; but the audio files that were less ...
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1answer
655 views

How to change the modified date of a file without root?

How do I change the modified date of a file, specifically PNGs, on Android without root? Total Commander failed to do it with a permission error Access Denied.
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21 views

Only few files are visible from 5TB exFat external hdd on Galaxy S8+

I have a 5TB external storage with many RAW photos and videos. They are sorted by dates in folders and the hdd itself is almost full. When I connect it to my PC, it recognizes all files and ...
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32 views

How to transfer system app (built-in app) from android to android?

I have Collins dictionary in my Samsung Galaxy S6 edge which is System app (it can only be disabled, no uninstall option). I want to transfer this dictionary to my j7 mobile but it does not transfers ...
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78 views

How can I restore deleted pictures from Android (LG G5, Android 7.0)?

I was looking at my phone pictures from my PC and I accidentally deleted them. I've looked on my PC trash but they are not there and I can't find them in my phone either. Is there any way I could ...
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3answers
936 views

How to access files via localhost in firefox browser

I'm looking for a way to access my devices files in Firefox. The reason for this is I want to use an extension to read *.md file. I know that I can use file:/// to access files, but the extension can'...
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1answer
162 views

Proc-folder: App generated almost a thousand sub-folders

When I was searching with the "File Manager" app (com.alphainventor.filemanager) for some files in the root-folder, it generated hundreds (almost a thousand) folders in the proc-folder. [I don't have ...
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1answer
371 views

Which part of Android directories contains so-called proprietary blobs?

When building AOSP (Android Open Source Project) or LineageOS, there is a tool named breakfast. It downloads proprietary blobs and integrates them to the source tree. I have read this article, does ...
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1answer
322 views

How to find UID of an app installed on Android and use it as a shell user?

I am trying to find a way to determine the user name of the current shell user from within a shell / terminal on an Android device. The Android environment that I have in /system/bin and /system/xbin ...
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1answer
27 views

View list of registered document providers

How do I check in Android which applications have registered their document providers? I hope no code is needed (I need it from user perspective), but if that's the only way then I can attempt that.
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76 views

Remote Connection to Phone's File System

I have been researching how it is possible to gain access to a phone's file system using something like the phone number, IMEI number or other identification number in a similar way that I can SSH or ...
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28 views

What's a good place for public SSH keys on my filesystem?

I'm using an SFTP server app on my Android phone (RedMi 3S); it's a typical Android app, not something requiring root or run as an ARM binary from the command-line). This server app lets me define ...
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1answer
19 views

I am trying to move a file from sdcard to another device folder and it fails with error that file is not there, but it is!

I am trying to move a file from /sdcard to another device file and I am getting the following: mv: bad 'xxxxxxxx.0': No such file or directory while ls -l shows the file in directory. The device is ...
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38 views

Clone userdata from xcover-3 to xcover-3ve g388f -> g389f

I have some very special questions for you. My friend gave me a broken xcover-3 g388f. He wants the data on it, so I "Chip off" the internal memory and read it out with a chip reader. Now he came to ...
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1answer
367 views

Delete file with special characters from un-rooted device

How can I delete a file with special characters from an un-rooted Android device? I used a web site to download a YouTube video to my mobile phone. The video name contained special characters (...
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53 views

Path to sensors and GPS data? (for Android Terminal)

For battery information, the path is /sys/class/power_supply/battery. What is the equivalent path for barometer (hPa), brightness sensor (lux) and GPS speed, altitude, latitude, longitude, accuracy?
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51 views

copying files from pc to android denied with error message unsupported file type

so I bought an android phone (moto g6 plus with android 8) and I want to restore some files which I backed up from my older phone (moto g 1st gen). I connect the phone to my PC (Windows) via a USB ...
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1answer
321 views

Difference between /mnt/sdcard and /sdcard

I'm in the beginning of Android kernel study and I'm looking at every directory in rooted Android. I realized that the same directories were in those two: /mnt/sdcard and /sdcard. What's the ...
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68 views

File system error when writing

I recently encountered a problem using Threema on LineageOS 15.1: I noticed that whenever I want to download a picture posted by someone else in a conversation, I get the message "Could not download ...
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1answer
31 views

Open file on tablet from smartphone

How do I view the files on my tablet from my phone? Do I have to connect wirelessly? I am working on a translation and would like to see the original on one tablet and the file I'm working on on the ...
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122 views

data/sensors_calibration_params.xml does not exist while factory reset

data/sensors_calibration_params.xml does not exist while factory reset of lenovo yoga tab 3 and it's battery is stuck at 0%. I have done factory reset and have tried different cords to charge but it ...
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46 views

Where does Google's Allo store (private) messages and media?

I suppose that messages and media sent and received in incognito mode are encrypted but they have to be stored or at least cached somewhere on the device as long as the timer, if any, has not finished....
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234 views

How does “Recycle master recycle bin” app recovering deleted files ? [closed]

There are many apps that recovers deleted data(images, video, PDF) i.e Disk digger , Dumpster e.t.c and these apps also ask for root , but here i want to know the process/methodology of simple ...
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1answer
604 views

Why do write attempts to /system/priv-app cause /system to switch to read-only?

I'm trying to write files to the /system/priv-app directory. I boot into recovery (TWRP) and run adb shell. ~ # mount /system ~ # mount rootfs on / type rootfs (rw,seclabel) ... /dev/block/mmcblkXXXX ...
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54 views

Linux automount corrupts ext4 partitions of Android install?

I've been experimenting with dual-boot between Linux and Android on an x86 device which came with Android + Windows preinstalled (Chuwi Hi10 Pro). I soon found out that simply booting Ubuntu (either ...
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1answer
424 views

How to delete SuperSu and changes it made

I inherited a Moto G3 which I unlocked and installed TWRP and a custom ROM. I foolishly attempted to install SuperSu. It supposedly changes some system files. Now I want it off the phone. In any ...
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59 views

is there a common symlink in android multi-users, access use's `root directory` ?

On test tablet. There are two users: /storage/emulated/0/AAA --onwer /storage/emulated/10/AAA --nomal user My attempt: adb shell "ls -l /storage/emulated/legacy/AAA" file dot exist. --failed ...
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247 views

android oreo , /system, /data and /sdcard for media

I am in need of a new mobile and the new kid on the block is Android 8.0 . From what little I could garner it seems there are three partitions by default which happen in an android phone. I come from ...
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476 views

How to access the full file system in Android 7 and higher?

I am running Android Nougat x86.But in Android Nougat, one of the adverse changes is the inability to even view the files. They are invisible, apparently even to root app. I already tried root ...
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1answer
381 views

Accessing music on samba share

I'm in the process of putting a large amount of music ~1.5TB (in many folders) into a samba share on ubuntu. I'm wondering what a good application to stream this to android would be, currently I can ...
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242 views

Recover hidden pictures from my system

I am currently using Calculator Vault to hide my photos and would like to recover all my photos. But my system does not want to start since this morning. I have the password with which I lock it. ...
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1answer
53 views

DD fails beyond 2GB seek

When I try to use dd to flash images I see some issues when the seek value exceeds 2GB.(i.e. bs * seek >= 2GB). dd bs=512 count=8 if=sample.img of=/dev/block/mmcblk0 seek=4194304 dd: /dev/block/...
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3k views

Can't create new folders on SD card?

I'm using Lenovo A7000 with Lollipop and I can't create new folders on SD Card. Attempt to create folder on SD card always end with error, however, android phone is not going to tell me what error it ...
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1answer
138 views

Weird folder keeps appearing in the internal memory

I have a Redmi Note 3 Pro handset (2 years old) in which I am using AOSP Custom ROM (Android 8.1). For last 1 year, a weird empty folder is getting created randomly on my internal memory. I generally ...
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2answers
80 views

Unable to mount /data after multiple wiped

Everytime I try to flash anything from TWRP it says "E: unable to mount /data". I have tried multiple wipes and entirely reflashing the os but everytime i finish setting up the phone after wiping it, ...
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4k views

Dual Messenger - Where are files stored (e.g., WhatsApp)

I had a working WhatsApp (say, WhatsApp W1 in phone PC) in my Samsung J7 Prime, Android 7, recovered with the usual Backup to/Restore from Google Drive, from phone A (PA). I meant to install a Dual ...
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45 views

Browse entire file system in “browse” dialog box?

I am trying to use KeePassDroid and when I select the browse button for the keyfile section it shows this screen: As you can see, it's only limited to "Recent, Images, Videos, Audio, Downloads". My ...
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1answer
917 views

Access Android SD from Windows 7 via card reader

I want to backup my sd-card, before using it in my new phone. So I used a card reader to connect it to my Windows 7 notebook. Sadly the partition is not mounted to a drive letter, altough I can see it ...
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417 views

Mount encrypted emulated avd userdata-qemu.img.qcow2

I'm trying to make a backup of my AVD. To speed things up, I like to make incremental backups. Backing up the *.img.qcow2 file(s) is inefficient. I'd like to be able to mount the filesystem that ...
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41 views

Share as file on filesystem?

Various apps have a "share" functionality which opens up several providers of media/means to share some piece of content (e.g. send over WhatsApp and many others). Is it possible to have a "sharing ...
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397 views

Filesystem for sdcard to store large file and apps access

I am running android oreo 8.1 (custom ROM) on Xiaomi Redmi Note 3 Pro. I have a 64GB memory card in which I want to store large files of size 15GB, 20GB etc. So I can't use FAT32 filesystem. I ...
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901 views

Open local file from Excel Cell in Android

In Android, I wish to open a local file from a Hyperlink in Excel. XLSX file and the linked image are in the same directory folder. I've tried the following: =HYPERLINK("cat.jpg", "Cat") =HYPERLINK("...
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1answer
2k views

still a mystery . thumbdata3 file space & performance hog

I just don't know how to fix this issue. I have tried almost everything and give up. I have read other threads on what to do if there is .thumbdata3 file that occupies a lot of space. my file ...
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1answer
47 views

What Kind Programming Language Used in File on /system/xbin?

i was explore file in xbin folder, then i found that the file is have strange language like this : ELF( 4�Q4 (444 TTT�>�>�M�]�],�LNL^L^hhh88Q�tdpH1H11��R�td�M�]�],,/system/bin/linker ...
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1answer
148 views

Getting the Europa notification tone off my old phone

I'm moving from a Nexus 5X to a shiny new OnePlus 5T. I like my old Europa notification tone, but it's not on my new phone, and I couldn't find a way to find the file on my old phone without rooting ...
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0answers
40 views

Android doesn't delete folders completely

Redmi 3s, MIUI 9.2 MultiROM Stable. I had some music on SD card in Music folder, then I deleted it (using Poweramp or file explorer, same for both). Tried to send music from PC using Foobar2000 ...
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1k views

Create Symbolic link to directory in internal storage with terminal emulator

Found this question but it doesn't actually answer the question of why this doesn't work: ln -s /storage/folder_a/dir_of_stuff_I_want /storage/folder_b I get operation not permitted. Also tried ln ...