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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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14 views

Access “downloads” folder within internal storage

I can see files within the "downloads" folder in internal storage on my LG V35 ThinQ phone. I cannot see these files from my Windows PC (phone connected to PC in USB storage mode). If I try to move ...
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30 views

How do I search the SD card with standard Android File Explorers?

My Android Pie SD card storage looks like this: . ├── Android | ├──data | | ├── com.amazon.mShop.android.shopping | | | └── ... | | ├── com.amazon.venezia | | | └── ... | | ├── ...
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13 views

Folder shared between only two apps [closed]

Is there any way to create a folder (either on a shared sdcard or in the internal storage) accessible only by a select list of apps? Example use case: Text editor app creates files in a folder text-...
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1answer
61 views

Why bowsers cannot download files to storage (path looks /dev/null/Download)?

The phone is Samsung Galaxy Note N7000. For the last few years I use NightOwl custom rom (Android 7). I do not remember when I faced with this problem, maybe after repartitioning with REPIT (but ...
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1answer
18 views

I don't know how these files got in my photos

I get photos saved in a folder named files, I don't know the people in the pictures . there not photos I took ! How could they have gotten into my phone? and details show /storage/emulated/0/Android/...
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36 views

My SD Card gets corrupted every time my phone reboots or shuts down

I have a 32GB SD card, however, every time I mount it into my phone (Huawei Y5II), it shows a message that the SD card is corrupted and I should reformat it. I backed up my files to my PC, and ...
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21 views

Is it safe to delete the Android “.HiddenCabinet” folder?

I wish to remove the entire Hidden Cabinet (".HiddenCabinet") directory tree and all its components. Is it safe to simply delete that folder without disrupting the rest of the file system? Are there ...
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23 views

How to recover unsaved video file on Android?

I've got a Samsung S9 phone and today I was taking a lot of photos and videos. For one video we pushed record for about 30 seconds and then pushed stop. It appeared to have been recorded. However, ...
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21 views

Unable to copy the files to /system/app

I am working on i.MX 6Quad SABRE-SD with Android 9. I am facing some problem when copy the some data to system/app from USB Mass Storage, I got error, when I mount the system to write access: ...
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1answer
52 views

What is default “fstab” file in Android?

As I known, in Android 9, system and vendor are mounted in the first stage of init by parsing fstab from device tree. But, there is another fstab parsed in init process, it is device default fstab, ...
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30 views

Explore files using Android Studio

Is it possible browsing the device filesystem with the current version of AS? I've read that in the menu View > Tool Windows > Device File Explorer there should be the suitable tool, but I cannot see ...
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1answer
21 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 ...
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24 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-...
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2answers
913 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 ...
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1answer
1k 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 ...
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28 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 ...
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19 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 ...
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1answer
78 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 ...
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31 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. ...
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1answer
2k 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 ...
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1answer
143 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 ...
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1answer
193 views

How to change random filesystem label on USB OTG?

I am without PC right now, but I need to Format USB Drive (to FAT32 or Ext4) with Samsung S8 (Android 9) and change label. But I can't find any app that can do this. I can format USB drive in Storage ...
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1answer
248 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?
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1answer
156 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 ...
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15 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 ...
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2answers
216 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
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1answer
168 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 ...
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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 ...
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3answers
297 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 ...
2
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1answer
572 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 ...
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41 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 ...
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34 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 ...
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29 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 ...
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0answers
19 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 ...
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38 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 ...
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0answers
36 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 ...
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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.
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0answers
352 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
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1answer
97 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-...
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1answer
68 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,...
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0answers
37 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 ...
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142 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 ...
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1answer
440 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 ...
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0answers
55 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 ...
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0answers
175 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
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0answers
52 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'...
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1answer
120 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
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0answers
49 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
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1answer
26 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 ...
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0answers
25 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 ...