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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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1answer
40 views

Can disk quotas be disabled?

$ cp a b Cannot write to 'b' (Quota exceeded). # df -h . Filesystem Size Used Avail Use% Mounted on /data/media 110G 102G 7.8G 93% /storage/emulated I can copy the file perfectly fine in ...
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1answer
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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2answers
1k views

Auto-delete certain file extensions on my phone?

How do I make my phone automatically delete certain file extensions? I'm on ICS, rooted. For example, after connecting my phone to my mac, it will leave a .trashes file and other "." folders on my SD ...
3
votes
1answer
2k 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
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0answers
131 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 ...
0
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1answer
1k views

How do I mount an external disk drive formatted in ext4 via USB Host?

I plugged a 2.5 inch 1Tb drive into a Nexus 10 and I cannot see it anywhere really. Something pops up in ES File Explorer, but I cannot access the drive. Do I have to root my device, or is there some ...
101
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3answers
461k views

Where Android apps store data?

Could you list all possible directories where Android apps may store data, providing description what kind of data are stored in each directory?
1
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1answer
1k views

How to move files to external SD card on a non-rooted Android?

I'm using the Terminal Emulator app on a non-rooted Android 5.0.2 phone. When moving files from a folder of the external SD card to another with: mv /storage/extSdCard/DCIM/Camera/* /storage/...
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1answer
215 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 ...
0
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2answers
1k views

How to prevent extra folders from being created in my external SD card?

I have an HTC desire 820s running on Kitkat 4.4.4. I have set phone storage as my default write disk in Settings. However, when I open ES file explorer, I always find that many folders named like ...
1
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1answer
61 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, ...
2
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1answer
67 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 ...
0
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0answers
18 views

Access “downloads” folder within internal storage [duplicate]

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 ...
2
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0answers
911 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("...
0
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0answers
36 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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0answers
40 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 ...
13
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1answer
3k views

Why is there no option to choose size in TWRP's resize partition feature?

I'm trying to reflash an old Galaxy Note N5100 but I realized that the system partition is too big (~1.5GB). The current ROM uses only about 40% of the partition so I want to shrink it to make space ...
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2answers
1k 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 ...
0
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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/...
0
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1answer
1k views

/sdcard/alt_autocycle - what is it?

I have an empty folder called /sdcard/alt_autocycle. What creates it? What is it used for? Can I delete it?
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1answer
1k views

Why is Android 5 corrupting my SD card (moving files to LOST.DIR or losing them)?

I've been using VFAT formatted SD cards for years to transfer files between devices (tablets, cameras, GPS, computers) under different OS (Linux, Windows, Symbian, Android) without, as I recall, any ...
0
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1answer
1k views

Editing personal dictionary on Android 6

As it seems Android blocks third party apps from editing the personal dictionaries for some reason. I just upgraded from Android 4 to 6 and want to import my personal dicitonary, but the apps I've ...
0
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2answers
131 views

Shortcut to a specific folder using the “My Files” file manger

I have an app icon on desktop for "My files" app. But how is it possible to create a shortcut for SD card\books\ on desktop? I have a Samsung a3 non rooted with android 5
0
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1answer
1k views

How to enable pip, QPython to write to Android filesystem?

I have been following this guide to install youtube-dl on my Android phone. http://www.arulraj.net/2015/11/download-any-videos-in-android-using-youtube-dl.html However, when downloading the videos, ...
0
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1answer
1k views

Transfer a large file from PC to smartphone

I have a Samsung Galaxy S2, and a PC with Windows XP (I do not have WiFi). I want to transfer a 2.1 GB file from the computer to the phone. If I transfer the file as usual, I have the following error: ...
2
votes
1answer
879 views

How to make bind-mounted (mount -o bind) folders visible for non-root users?

I want to mount-bind an app data folder in /data/data/... to a user subfolder in order to automatically synchronize the contents for backup purposes. As root I use the following command: mount -o ...
2
votes
1answer
2k views

Self replicating worm in sd card

I have a Samsung Galaxy Grand with a 16gb micro-sd card. For some inexplicable reason, I am losing data on the sd card. Folder names are being changed to start with the character "μ." For example, ...
0
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0answers
24 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 ...
1
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1answer
456 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 ...
1
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1answer
1k views

Unable to access the “mmcblk0p6” file, on Samsung S5300 Mini Pocket

I have rooted my Samsung S5300 Mini Pocket Galaxy, and I have entrie SDK installed on my Windows 7 laptop. Now via Command Prompt I am able to: adb shell $ su # <--- and get root access However,...
2
votes
1answer
1k views

Is it possible to restrict an app's permissions to a specific folder(s) (and subfolders)?

When installing an app, depending on the app, access to the filesystem is required and requested at the time of install. Is it possible to restrict this to specific folders(s) and their subfolders? ...
0
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1answer
1k views

how to transfer a file from within system partition on android to desktop

background I'm developing an app that downloads files to the device.. some of these files are acting out and to trouble shoot I want to actually transfer these files to my (mac) desktop and go ...
1
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1answer
1k views

cannot play or copy corrupted video

I have a Samsung galaxy S4. I have changed the settings so that the pictures and video taken from the phone camera are saved in a folder on the external memory card. Usually this works quite well. ...
1
vote
1answer
3k views

Internal partitions messed up

So, I got a "little" problem, it started a few days ago, I woke up and my device was overheated and stuck in the bootlogo, I went to the Philz Recovery but it started with an startup error about the ...
1
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1answer
3k views

What is the Location of Saved Images from the Facebook App?

What is the location of saved images from the Facebook app? I found this Location of saved images from Facebook Messenger app but I'm interested in photos from the Facebook app itself
0
votes
0answers
26 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, ...
0
votes
0answers
22 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: ...
4
votes
1answer
233 views

Why is Android showing a different hosts file once my system is booted versus in recovery?

In the past, I've used a modified hosts file on my system that I place at /system/etc/hosts. The process is pretty straightforward Boot into recovery using a custom recovery. Mount /system read-write ...
0
votes
0answers
31 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 ...
3
votes
1answer
8k views

Getting “operation not permitted” error when trying to symlink a directory

After installing a custom ROM (Onecosmic's ICS 4.0.3 rc1) on my Samsung I9000 Galaxy S, the external_sd symlink is broken. So, I wanted to get this symlink back. I used the following code in Terminal ...
2
votes
1answer
2k views

Corrupt Internal Storage File System

I am using an original RAZR that is partitioned using Safestrap running stock 4.1 on one partition and CM10.1 on the other. My problem is the internal storage (internal SD card I believe) partition ...
2
votes
5answers
16k views

TWRP createTarFork() error 255 when backing up data

I have installed FreedomOS on my OnePlus 5. I'm not sure if this is related to FreedomOS, but when I try to make a backup in TWRP with data, system, and boot, it has an error with createTarFork() ...
5
votes
2answers
35k views

adb push not working on /system, read only

I can do adb push to /sdcard/ location but not /system on my android device. sudo adb push lib/audio.primary.gmin.so system/lib/hw/ failed to copy 'lib/audio.primary.gmin.so' to 'system/lib/hw/audio....
3
votes
1answer
148 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 ...
1
vote
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,...
-1
votes
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 ...
14
votes
1answer
350 views

Are there any Google devices that support capabilities in their default kernel?

If I systemless root (no modification done to /system partition) a Nexus device, would I be able to able to set capabilities on executables without changing the original kernel binary ? I often want ...
3
votes
1answer
5k views

XT1064 - 5.0.1 - Rooted - Issues with writing to /sdcard

I just rooted my Moto G 2014 XT1064 running 5.0.1. I used this article to do the root process: http://maktechblog.com/how-to-unlock-the-bootloader-and-root-the-motorola-moto-g-2nd-gen/#Root Which ...
2
votes
1answer
180 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
1answer
83 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 ...