Questions tagged [file-system]

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

Filter by
Sorted by
Tagged with
-1
votes
1answer
15 views

How does Windows interact with Android Internal Storage?

I have a simple question which I can't find the answer for We all know that Microsoft Windows doesn't support partition formats such as ext4 or f2fs, however even this being the case, how can it ...
-1
votes
0answers
36 views

unpack/repack system.img of emulator in 2019

I am trying to modify the system.img because the changes I make to the system in emulator are not saved, so I want to know how I can unpack the image and repack it ? There are no recent articles on ...
0
votes
0answers
20 views

In which Android system file can I remove Wi-Fi password field?

If I would root my device based on Android (v4.0.4), which system file and how can I change to remove from the graphic interface the field where we manually type a password when connecting to new Wi-...
1
vote
1answer
114 views

How to unpack/repack system.img of android ROM?

I have OnePlus 6T device which has A/B partition system and has a ROM of user type i.e [ro.build.type]: [user]. This device is rooted with Magisk. I have a requirement(Want to place customized ...
2
votes
1answer
276 views

How to disable dm-verity on Android with “user” build type ROM?

I have One Plus 6T Android device which has a ROM of build type user. This device is rooted with Magisk and I want to disable dm-verity on this device. I have tried to run adb disable-verity but I got ...
0
votes
0answers
20 views

Camera folder displayed as empty, but contains 20GB data

My Lenovo Moto G5 Plus' internal storage ran full, and now there appears to be a problem with the photos that are saved on its internal storage. The internal DCIM/Camera folder is displayed as empty ...
0
votes
0answers
14 views

In Android 8, during video recording, how the data is saved to disk?

In Android 8, during long video recording, 1) how often does the recorded video data is written to internal storage? 2) What is the size of each piece of data written? 3) Is the data stored ...
1
vote
1answer
42 views

Does Android 8 has journaling enabled in its ext4 files sytem?

Android 8 uses stackable file sytem called sdcardfs, which emulates FAT32 on ext4 on the data partition. Does sdcardfs recognize the ext4 file system and journaling? In other words, files written ...
0
votes
0answers
29 views

2 folders of same name in internal storage of Oneplus3

Currently on my phone, i have 2 folders of the same name. The content of both folder shows 0 bytes. EDIT : They are exactly the same. And the subfolders and files are also same with 0 bytes content. ...
0
votes
1answer
590 views

TWRP unable to wipe or format `Failed to mount '/system' (Device or resource busy)`

I'm trying to install LineageOS and then GAPPS on my Pixel XL from TWRP recovery. I'll try to Advance Wipe the /systems directory and Format Data, but I continue to get multiple errors: Failed to ...
3
votes
1answer
101 views

How to identify the app/process which re-mounts partitions R/W, creates files and changes file permissions?

I have a rooted device, with superuser rights granted to a few apps I trust. I have often found my /system or /vendor partition mounted read/write, and some files chmoded to 0777. Similarly ...
2
votes
1answer
138 views

How can I know if fstrim was run when I put my phone on charging over night?

Is there any logging where I can confirm this?
1
vote
1answer
69 views

Why deleting system files on a rooted Android says “device or resource is busy”?

I have FX Explorer, I was trying to delete some stuff in /system/app (the stuff are just empty folders) but it keep saying The operation isn't permitted on a mounted filesystem. What should I do to ...
0
votes
0answers
14 views

Save doc to same location it was opened

I am looking for an Android word processor that does one thing ( aside from the usual editing and formatting). When I go to save a document, I want that document saved exactly in the same spot that I ...
0
votes
2answers
98 views

Getting signature error while installing a different version of the app

Recently I install a custom ROM named eelo https://e.foundation/. It comes with pre-installed Telegram app. After much research I was able to uninstall if from the system with the command adb shell pm ...
2
votes
1answer
100 views

If I reset my phone, will it also TRIM the fragmented eMMC?

I know that Android supports fstrim but it only works if the phone is idle for a long time while charging. I think my phone is too fragmented and is lacking performance so I want to reset it but I am ...
1
vote
0answers
50 views

An app on the play store promises to TRIM without root access but I highly doubt if it even works [duplicate]

My phone is new so I can't root it because I don't wanna void my warranty just yet and trimming my phone would also not make a significant difference. Since most other apps on the Play Store promise ...
1
vote
3answers
161 views

This app promises to run “fstrim” without root but I am not sure if it works

I am not sure if this app works. Can someone please help me? My phone is new and in its warranty period so I can't root it yet. I tried this app but I am not sure if it actually did something. Unlike ...
1
vote
1answer
301 views

How can I enable last_kmsg?

I'm trying to diagnose a random reboot on LineageOS 14. last_kmsg is not in /proc, nor it is in /sys/fs/pstore/console-ramoops. EDIT: ~# mount | grep PSTORE ~# mkdir /mnt/pstore && mount ...
0
votes
0answers
32 views

Can I get the account details or logged details of an application from the data / file system directory of phone?

Can i get the account details or logged details of an application from the data file of the application in the file system. My device is rooted. For example I have two Instagram accounts saved in the ...
0
votes
0answers
30 views

How to delete app remnants without root privileges?

I installed Chrooma Keyboard on an Android Nougat device. It worked fine, including swiping to enter text. After adjusting Chrooma's settings several times, it started to have a problem where ...
0
votes
0answers
25 views

Corrupt filesystem - only able to boot from external SD card

So I have a Samsung Galaxy J5 SM-J500F which suddenly refused to boot in any way (normal, recovery, download). I booted TWRP from external SD card but it shows Internal Storage (0 MB). Can't mount or ...
0
votes
0answers
17 views

How do I find and delete lost encrypted files?

I used the Asus File Manager app hidden cabinet feature to store files. Now the app crashes whenever I open it. The files being gone is a conclusion I've come to accept, but I would like to delete the ...
0
votes
0answers
37 views

Track files created/read by a certain app

I want to monitor a system app, say "S1." In particular, I want to know what files S1 is accessing/reading. S1 can also download files over the Internet and save them in the root of the system. I ...
1
vote
0answers
33 views

MicroSD card file system keeps getting corrupt for no obvious reason

Since when I got my current phone (May 2018) I had to reformat my MicroSD card about 3-4 times, probably because of file system corruption. (It's a SanDisk 8GB one, for those who are wondering. And ...
0
votes
0answers
13 views

Check internal/USB/OTG/Sdcard filesystem on Android [duplicate]

Is there any standard way or app to check which filesystem my device has, incl. external ones? Non-standard apps are also appreciated.
0
votes
0answers
243 views

Is there a way to change the default file manager app?

I was wondering whether I could replace the file manager that comes with my phone with a 3rd-party app in a way that any app that needs file access, goes through the 3rd-party app to find the ...
0
votes
1answer
75 views

Change file (pictures, videos) timestamp from filename

When moving files around tru different dirs and across PC / smartphone, timestamp for last modified date usually get reset to the very datetime of move / copy operation. This lead to files being non-...
1
vote
1answer
63 views

How Can I Check the Location of a File (e.g. Cluster or Sector #) in the Internal Storage?

I would like to know If I certain file moves on the Flash memory (internal storage), between writes/updates to it. Is there some way I can get the file's location on the Flash memory? (Cluster Number,...
1
vote
0answers
35 views

datadata is full - and doesn't let me remove files

A really old Smartphone having Cyanogenmod on it provides only about 400 MB space for data/data. Now this space is full. df shows 0.0K of free space. The homescreen doesn't even appear, only errors ...
0
votes
0answers
103 views

adb shell push image to recent or downloads folders not on sdcard

I want to push images to one of this folders: with shell command. But file only appears on sdcard folder My last tries was: adb push C:\Users\User\Pictures\girl.jpg /data/media/0/Pictures/ adb push ...
1
vote
1answer
292 views

What is the “u#_everybody” UID?

In (multi-user) Android there are UIDs like these: u0_everybody u10_everybody u11_everybody Those seem different to the usual uXX_aYY UIDs used for the applications. What is their purpose? Is this a ...
0
votes
0answers
50 views

Photos are grey/corrupted?

Whenever I take pictures with my phone, the picture turns grey, with only a strip of the picture on the side. I recently reset my phone to try to solve the problem, and it worked, but then it started ...
1
vote
0answers
158 views

Is it possible to open a locked android device or access it's files without knowing the password?

I have a Samsung phone which is password protected it also has fingerprint enabled. I don't need to know how to open it I just want to know if it's possible to unlock it or access its files? There ...
0
votes
0answers
51 views

Which apps can find Non-root apps's data? [duplicate]

Where Android apps store data? I am trying to find all the app data of a game installed on my device(2.53GB) for move it to another device(first time) because I need to change my device soon... I don'...
0
votes
1answer
97 views

How to create a copy of a file immediately when it's created? [duplicate]

I have an Android app that will create a file in /data/ and immediately delete it. I want to know how can I catch this file or create a copy or even disable user permissions to delete a file? I have ...
0
votes
0answers
43 views

Phone stuck in bootloop after renaming system APK

I have an xiaomi redmi note 5 rooted: to get rid of the notification system about new updates I've renamed the " Updater.apk " file on root /system/data/Updater , but now the phone in in bootloop. I'...
1
vote
1answer
22 views

File recovery on bootloader unlocked Pixel without flashing

I have a first generation Google Pixel the bootloader of which is unlocked and is running stock Pie. I need to recover deleted files on it because a move operation got effed up by ES File Explorer ...
0
votes
0answers
20 views

Is it possible to create shortcut in Android file system without root?

Android system doesn't provide ways to create shortcut in file system. I have tried using termux to create shortcut in my file system, but I don't have the authority. Is there a way to create ...
1
vote
1answer
648 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 ?
0
votes
2answers
2k views

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 ...
1
vote
1answer
193 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 ...
0
votes
0answers
33 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 ...
0
votes
1answer
469 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.
1
vote
0answers
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 ...
0
votes
0answers
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 ...
0
votes
0answers
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 ...
2
votes
3answers
683 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'...
0
votes
1answer
126 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 ...
2
votes
1answer
288 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 ...