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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51 views

Modifications of vendor image on Android 10 - alternative idea

Further to my earlier question here and according to the "Mounting Partitions Early" article, I'm looking the correct way to implement my new idea: Skipping the mounting in the startup of ...
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How can one list all large files?

One can list all directories on /mnt using: adb shell ls /mnt How can one list all files which are larger than 100M in the directory /mnt? adb shell find -size +10M ; sudo adb shell find -size +10M ...
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Which format the system images for avd are in

After downloading an image for android virtual device via avdmanager there are system.img userdata.img ramdisk.img and kernel_ranchu in system images folder. Which format are they in and how to read/...
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Android reports file sizes different than windows

Android and windows report different file sizes for the same files. why is that? Looking at two video files, on device both the Gallery and file manager report a certain size, but browsing to those ...
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How to expose a folder to a PC using mount command

I've been messing with termux on a rooted tablet (mediatek), and I'm trying to expose a folder using mount that will be accessible to my PC via a USB connection over mtp (with read/write permission). ...
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How to show configure mount ext2 ext4 formatted SD card partitions in android file manager?

How to show configure mount ext2 ext4 formatted SD card partitions in android file manager? As fat32 fiile system don't support files more than 4 gb I have to take backup before after rooting for ...
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41 views

How to mount image file without root?

In rooted android phone, ext4 image file is mounted using these commands in android terminal : # mknod /dev/block/loop52 b 7 0 # losetup /dev/block/loop52 /sdcard/ext1.img # mkdir /mnt/...
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127 views

Data Recovery on Android 11 with broken screen

I have a pixel 4a running android 11 with a broken screen. The full screen is black; the lower part of the touch screen seems to be responsive but I can't really tell what's going on so I don't know ...
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33 views

How to add strong encryption to an SD card so that I can access it both on my desktop and phone using open source non tracking offline tools?

The question says it all. So far I was able to find out Default android encrypted SD card can only be read by the phone or by a skilled hacker or their non open source tools There are tools that are ...
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69 views

change file system F2FS back to EXT4

Xiaomi Poco M3 (citrus) A-only (SAR) system-as-root device shipped with MIUI 12 Android 10 and F2FS (FBE encryption). I don't trust F2FS and want to run it plain EXT4 unencrypted. I formatted EXT4 and ...
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.nomedia + SD Card - just can't create the file, no matter what

I have an ASUS Zenfone 7 Pro phone running Android 11. This phone comes with an SD card slot and so I wanted to make use of it. It stored the files great, I can read the files all good. But I cannot ...
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38 views

Is there a way to remount external sdcard to allow execution from it to all users?

I want to remove noexec flag from /storage/extsd for all users. My system is a rooted original Android 5.1.1 with Termux installed, mount namespace separation is disabled in SuperSU app. Recently I ...
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Resuming multiple downloads in Chrome

Many sites give all their files the same name. When downloading multiple files like this, Chrome helpfully adds a (1), (2), etc. to the filename. However, if something interrupts the download, such as ...
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What does it mean when a file is owned by the user “system” and the group “system”? in android file system

I just trying to understand What does it mean when a file is owned by the user “system” and the group “system”? in the android file system. In the android device file system root@xyz:/ # ls -l cache/ ...
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155 views

How to get Android Phone storage as a drive path in Windows PC

I am using MI Note 5 Pro android version 9.0 and Windows 10 Basic. On USB plugging('File Transfer' selected), I can only access files from Phone by normal copy paste(ctrl-c/v) but cannot access full ...
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48 views

Adoptable storage filesystem?

I have a sdcard split into two partition: portable and adoptable. Not long time ago my /data is formatted as F2FS, really unstable on my device. So I recently format it again to EXT4. I'm noticing ...
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Name and type of virus on Android which is attacking file system and storage drives

There's a virus on my Android phone which is attacking the file systems and storage drives attached to my device. I need help identifying the virus, so that I may further my research and come up with ...
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Youtube Music Application Local History File Location [duplicate]

Yesterday I was listening to some music, but it didn't get saved to my account's history since it was blocked by an ad blocker. I was wondering if anyone knew if it was possible to access my recent ...
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The normal directories of storage of this app is empty. Does it got anything to do with my phone being unrooted? [duplicate]

There is an educational app in my android phone that allows me to download videos for studying them offline. I have downloaded a lot of videos and have my storage filling up to the brink because of it....
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keepass2android file locations

I've been using keepass2android for a while. I try to store my files in dropbox so I can access across multiple devices. I have noticed that somehow I have some copies of my mypasswords.kdbx file ...
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1answer
60 views

How can we avoid folders auto-creation?

There's a way to manage these system folders? I am struggling with some folders that are automatically created at boot, by system on the SD card, but I don't want them! The folders are especially the ...
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Android 11 "raw/:storage/..." file paths

Hello Android community! I am trying to recreate a way of putting a file on my emulator in a location, so that when picked it produces the following uri: "raw/:storage/..." My challenge ...
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Can I access "/data/user/0/" folder in Android emulator from Ubuntu PC?

I am using Ubuntu 18.04. From Android Studio with the following code I am getting file directory Context ctx = getApplicationContext(); final File filesDir = ctx.getFilesDir(); which is /data/user/0/...
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48 views

How can I dump the fscrypt per-file nonce by getfattr command?

According to document of kernel about fscrypt: Filesystem-level encryption (fscrypt): Per-file encryption keys Since each master key can protect many files, it is necessary to “tweak” the encryption ...
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How to mount sdcard as "internal" using custom filesystem on Android 10 (root access only via adb)

How can I properly mount my SD card as "internal" (i.e. so that all apps are on it) using a custom filesystem (in my case Ext4, but I'd like to use full-disk encryption using a key that I ...
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59 views

When performing an adb pull of an entire device, why do I see /proc/self/root in pathnames repetitively?

When performing adb pull / on a non-rooted device, I see hundreds of items with pathnames that begin with /proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/proc/self/root/...
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172 views

On a non-rooted device, can adb access any files that an Android file manager cannot?

An Android app I was relying on did not save its data. I'm hoping that perhaps the data is located in a cache or temporary file. The device is not rooted (and is running Android 7.0), and I've ...
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1answer
58 views

What are the files in the phoneypot directory?

I am running LineageOS 17.1 Lavender. Can anyone tell me the purpose of the files located in the /phoneypot directory in my Android device?
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1answer
52 views

Deleting Hardware files leads sometimes to brick the phone

I started recently to look up for a way to permanently disable my wifi, bluetooth, NFS, Network and GPS. Unfortunately I didnt find a proper method to do that. There was the option to physically break ...
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177 views

Android du and df very different: File System Corrupted?

On an Android Nougat (7.1.1) set top box, du and df of my /data partition are very different: $ adb shell du -sh /data 1.0G /data $ adb shell df -H /data Filesystem Size Used Avail Use% ...
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my device got a ROM flash by the seller prior to my purchase?

I bought a Galaxy Tab S6 a few days ago and I am going to verify if it is really brand-new. Some facts: The production date of this device is in July 2020 and my purchase date is in February 2021. ...
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How may I modify my root filesystem, which is mounted from /dev/block/dm-0, in order to create a mount point or symlink at /usr, on Android 11?

I need a writable /usr directory to run Gentoo Prefix. I suppose that it can be either a symlink to somewhere else or a mount point for further mounting. Information collected so far: Since Android ...
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3answers
636 views

How to solve problem in APK Tools

I'm trying to decompile an apk with the apk tools and I'm not getting it. When I run apktool -d myapp.apk it displays this error to me: Exception in thread "main" brut.androlib....
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58 views

How to handle hidden files and folders (which begin with a period/dot) when backing up Android to a Windows NTFS volume?

Over on Superuser, I asked about whether or not it's okay to have filenames and/or folder names that begin with a period (dot) on a Windows NTFS volume. The immediate response I received was to avoid ...
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115 views

How to delete file completely?

It's not a duplicate, because this question isn't about shredding files that already deleted, it's about deleting them in the first place in a way that recovery software wouldn't find it. I delete ...
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70 views

How to expand system partition? [Xiaomi Mi 9]

How to expand system partition? I'd need at least ~600MB more for OpenGapps package I'd like. Many thanks in advance! Here's log from parted cepheus:/ # parted /dev/block/sde GNU Parted 3.2 Using /dev/...
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Viewing files on Android phone from computer, only showing DCIM and Pictures folders, in internal shared storage

I have phones running Android.. When I connect either one to my computer, and click "internal shared storage", I only see DCIM and Pictures.. But if I go to any decent file manager app on ...
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2answers
579 views

Which filesystem should I use on my USB stick to have interoperability with Android and Windows?

I wish to use a USB stick with both my Android device and my Windows 10 PC. My requirements are: No file size limitation No root required on the Android device The filesystem should be natively ...
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1answer
124 views

Android 11 supports creation time (crtime/btime) for local folders and files?

is there a way on Android 11 (OnePlus 8T) for file manager to display creation time for local folders and files? Is there in recent years the support? Because have an iOS 14 device and use macOS 10.15 ...
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525 views

Connect Synology NAS to samsung android phone trough sftp with samsungandroid "My Files" app

There is a "DS File" Synology app to browse your Synology NAS via your Android phone, but the app is really laggy etc. On Samsung phones there is the "My File" app, a file browser ...
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1answer
625 views

Is it reliable to save some app files in /storage/emulated/0/?

I already read that /sdcard/ is a symlink to the actual path of /storage/emulated/0/. I'm an Android app developer using Apache Cordova, wherein cordova.file.externalRootDirectory is indeed file:///...
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1answer
453 views

How to run e2fsck on Android, can't get "adb shell" with unmounted partitions? [duplicate]

I can access the Huawei P9 on Win10 with adb, and shell into it, but that is with the phone booted into OS. I want to run a filesystem scan (e2fsck), but need un-mounted partitions for that. I read a ...
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Cant' mount loop device

After I format the loop.img (formatted as ext4) I can mount it no problem. But when I'm trying to remount loop.img from external sdcard to /data/data/com.termux/home/ubuntu20-fs/ always throw invalid ...
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File system of Android 10 running devices

I have a samsung A30 cellphone that runs Android 10 and I basically need to recover my deleted files. In order to do that, I need to know the filesystem because forensic tools require such information....
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55 views

How to use a different file chooser app in Android?

When using many different Android apps, a file chooser is displayed to allow the user to select a file to process. For example, in the Privacy Browser web browser, visiting the VirusTotal website and ...
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89 views

How to clear the Android file chooser history?

When using many different Android apps, a native file chooser is displayed to allow the user to select a file to process. For example, in the well-regarded Privacy Browser web browser, visiting the ...
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1answer
211 views

Any way to transfer file >4GB from PC to android tablet?

I'm trying to get a very large file (97 GB-Wikipedia for Kiwix) from my PC onto a Micro SD card in my Android 10/Go edition tablet. The problem is that the tablet doesn't seem to recognize an Exfat ...
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1answer
61 views

Media players are showing duplicate files after moving them

So today I moved the entire 'Download'(which contains music and asmr I downloaded from YT with those mp3 sites) file from my phone storage, to my SD card. Then I went to my music player app and it ...
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39 views

Images and Videos not loading after transfer from 'Internal Storage' to 'SD Card'

So I moved my files from Internal Storage to SD Card. But after that I found the files having errors in loading both on my file manager and my gallery. I have tried deleting the .nomedia but it still ...
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26 views

Apps/explorer associated to "select file" app dialogs

Some apps(A) need to select a file, and they show a dialog to chose a file explorer(B), and from this file explorer you can select the file and automatically you should go back to the main app. ...

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