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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votes
1answer
4k views

Where does Runkeeper keep its data files?

I was recording my path with Runkeeper for hours until the battery ran out. Now when I try to "Resend" the path to Runkeeper online it fails after a while. I need to find the path file so I can ...
6
votes
2answers
240 views

How does antivirus find the files accessed by an application without root access?

I haven't rooted my mobile phone, but an antivirus is running. Without rooting, how will the antivirus come to know about the files accessed by an application? Normally, in Linux distributions, it ...
5
votes
4answers
619 views

Folder that automatically uploads to phone

Here's something I that I want to do with my Android phone (Galaxy S2, CM9). I'll be happy if someone could tell me whether it's possible, and how. I often want to transfer files from my computer to ...
5
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4answers
53k views

download bigger than 4 gb file on android 4.0.4

How can I download files bigger than 4 GB on my Micromax A110 phone? FAT32 file system says that it does not support files larger than 4 GB. I know there is one more way to do that: EXFAT file system....
5
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2answers
10k views

Where is the Home folder?

On my linux system I have a directory in /home where all my personal files and local program configurations are stored. Where does Android store that type of file?
5
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2answers
40k views

Are files created in “/storage/emulated/0” supposed to appear in “/storage/sdcard0”?

From what I guess, internal storage is available by every user. If emulated storage is a storage location, made for a specific user, are files created in /storage/emulated/0 supposed to appear in /...
5
votes
1answer
4k views

What does the /data/system folder store and its significance?

I know that /data partition contains user-generated data (/data/app - user apps, /data/data - app data, etc). But what is the /data/system folder used for, and does it have any significance in the ...
5
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2answers
12k views

How to download a phrasebook from google translate

So i've been using google translate for a while and there are a bunch of translated words and phrases that i have asked for to date stored on the device. I now want to take a copy of them to my PC (in ...
5
votes
4answers
108k views

How to view the files from /root/data folder?

I want to see the files from /root/data/data folder. Is there any application/trick which can do this?
5
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2answers
14k views

How to check filesystem (/sdcard) for errors?

I would like to check my /sdcard, and possibly other internal partitions as well, for errors on the file system level. I am wondering how this could be accomplished. I am using a Samsung Galaxy ...
5
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2answers
15k views

What file systems can I use for a 128GB sdcard on Android 7.1, used as portable storage

I can't find an answer to this on StackExchange. I have a phone running beta LineageOS 14.1 (Android 7.1), and a 128GB SDXC card which I want to use as portable/shared storage between devices. I ...
5
votes
1answer
13k views

Will Android read any other non-FAT file-system on SD card?

I use Sound Juicer to rip all of my music. I have a lot of songs that published in a different language, and moreover that use different characters. I find the native file system doesn't support much ...
5
votes
2answers
14k views

Finding data created by a certain application?

I'm looking for the data-store of a certain application so I can take backups of some files that are important to me. Connecting the phone to my computer and browsing the file-system I get revealed a ...
5
votes
2answers
7k views

Path where Firefox Mobile Addons store their data?

I've installed Firefox Mobile on my Asus eee transformer and installed the scriptish add-on for using some userscripts. Some of them require editing. The problem is I don't know which path contains ...
5
votes
1answer
7k views

Unable to delete a file in /data/data with root permissions

I own a Moto G which is in 5.0.2 with KK bootloader. An app created a folder in /data/data which sustains in the memory even after uninstallation of the app. I couldn't remove the folder in any way. ...
5
votes
2answers
14k views

Need absolute path to “Download” on Android 6.01

...Due to the developer / maintainer of Terminal-IDE moving on, I'm trying to find equivalent capability and after hours of research found "Terminal Emulator for Android" (which is the same app as "...
5
votes
2answers
3k views

Media on external sd card can be browsed but not seen by other apps (including settings>storage). Not part of the .nomedia file fiasco!

As the title says, if I fire up a file browser I can access all the files on the sd-card without a problem. I can even view the pictures with the gallery and the music app plays my music files alright,...
4
votes
2answers
2k views

Why are some files under /proc are universally readable?

Why are some files under /proc are universally readable by anyone using adb? e.g. /proc/<pid>/statm /proc/<pid>/maps /proc/<pid>/smaps We can even cat the content of these files, ...
4
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3answers
5k views

What does /mnt/asec directory contain?

What does /mnt/asec directory contain in Android? Can someone explain in brief?
4
votes
2answers
12k views

Reason SD cards come FAT formated instead of Fat32?

I found my SD card to be FAT formated instead of a modern filesystem (at least fat32). This comes with the disadvantage of large allocation unit size (32kb) whilst most of the files are less than ...
4
votes
2answers
5k 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 ...
4
votes
1answer
6k views

How to clear a Folder (e.g. Downloads) automatically on a regular/scheduled basis?

There is a folder on an Android phone that continually fills with junk. Instead of clearing that folder manually on a regular basis, how can I setup up a way to have that folder be automatically ...
4
votes
3answers
7k views

Can't access my old files after switching ROM from AOKP to CM, even though they're still there

Initially I thought this was a problem with Google Play / Apollo, but I realize now that when I plug in my phone via USB, I can't see any of the many, many folders and files present on /sdcard that I ...
4
votes
1answer
17k views

How to format /storage/sdcard0 in ext4

I tried to create a symbolic link on the "internal SD card" of my Galaxy SD2. It failed with "permission denied" and I quickly realized this file system is vfat. How can I reformat /storage/sdcard0 ...
4
votes
2answers
2k views

Is it possible to reorganize the SD card? Because it is a mess in there

One of the things I hate about Android is the folder organization. Each app creates its own folder, usually in the root of the SD card. When I'm trying to find something, I have to search it through ...
4
votes
2answers
117 views

Questions about safety and reversibility of SD card partitioning.

In connection with my previous problem, I want to dedicate part of my memory card to the condition of the internal memory using the application Link2SD. I know that I should create a second partition "...
4
votes
1answer
2k views

Android /d folder

On all of my devices there's a folder called /d on two of my devices it's full of folders, on the other it's empty. What is the /d folder? What is it for? And why is it empty on one device?
4
votes
2answers
1k views

Cannot make changes to specific folder

My phone is rooted with aokp build 38 on it. It is a Verizon Galaxy Nexus (toro) There is a folder /sdcard/data that I can't make any changes to. Some of my apps are trying to use this folder but are ...
4
votes
1answer
14k views

Does Android support the EXT (filesystem) for removable storage cards? [duplicate]

As the subject indicates, does Android support any of the Extended File Systems ("ext", "ext2", "ext3" and "ext4") for removable storage cards (such as Micro SDXC storage cards)? Android is a Linux-...
4
votes
2answers
16k views

What file system for sdcard for KitKat

I have been searching the web and this website for information about the file systems supported by Android. I have not found anything though. Since KitKat (Android 4.4), some changes have been ...
4
votes
1answer
11k views

How (where) do I browse to the /data/Tombstones (on the System Partition, I think)?

Trying to delete some files from my System partition. Someone suggested deleting /data/Tombstones (I.e., what's the Path to it so I can browse to it) Using Astro File manager I navigated from the ...
4
votes
1answer
157 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 ...
4
votes
1answer
235 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 ...
4
votes
0answers
4k views

How to mount an Android sdcardfs formatted microSD card in Linux?

Suppose I take out the microSD card from my Cyanogenmod 13/Android 6 phone, put it in a card reader and want to access it within my Ubuntu desktop. The first partition (16M) mounts automatically, ...
4
votes
0answers
3k views

Create sdcard0 symlink on 6.0.1 for WhatsApp compatibility

I recently switched from a Galaxy S2 running CM 10.2 (Android 4.3.1) to a Nexus 5 running 6.0.1 (stock rooted). My goal was to migrate all my WhatsApp data (history, media, etc.) over to the new ...
4
votes
0answers
1k views

What is the /config file in the android root directory used for?

In the / directory of an android device is a file called config what is this file used for? I am assuming it is used for configuration files and other things but my Google searching has not been able ...
3
votes
1answer
1k views

How apps write data into file-system on non-rooted device?

User Apps and Data are stored in /data/app and /data/data respectively. But we can't (even) see that without root permission. So, I want to know If device is non-rooted then How user Apps are ...
3
votes
3answers
3k views

When should fstrim run?

Based on this cyanogenmod forum thread, I tried to address the delay in running applications and switching between applications on my Galaxy Nexus running cyanogenmod with Android 4.4.4 by running ...
3
votes
4answers
4k views

Why is there so many identical Android folders?

I was using the ES File Explorer app, when I noticed there's many different folders with all the same content. Like, there's a "legacy" folder, a "0" folder, and an "sdcard" folder, and it all goes to ...
3
votes
3answers
14k views

Running TRIM from shell

Is it possible to run fstrim in stock android 4.3 from adb shell? I understand it runs every 24 hours when the device is plugged in and idle but I would like to run on demand to test a few theories.
3
votes
1answer
23k views

How do I delete this read only file?

In order to enable USB mass storage mode, I placed a file in the /system/etc/init.d/ directory. My situation has changed, and now I want to remove that file. I know it is safe to remove because I put ...
3
votes
1answer
1k views

How to visit the /data folder on my Android on my PC?

For example /data/data/com.android.providers.contacts/databases/contacts.db I cannot see it both in Windows 7 and Ubuntu 11.04.
3
votes
4answers
7k views

Why do I get “not enough space” when I copy an APK file to /system/app?

I recently rooted my HTC Desire Bravo because I needed read/write access to /system/app in order to be able to copy an APK file there. I wrote here on stackexchange on the best solution to root the ...
3
votes
2answers
147 views

How to create and use multiple partitions on external SD card with different filesystems (Ext4, exFAT, NTFS)?

I want to create 4 partitions on external MicroSDcard through ADB shell commands, not on Windows or Linux. Also want to show all partitions in Android GUI (SETTINGS > STORAGE > SDCARD) and make them ...
3
votes
1answer
4k 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 ...
3
votes
2answers
4k views

Where should I install Toybox?

I own a rooted Samsung Galaxy S Relay 4G running stock Android 4.1.2. If you have Android 6.0 "Marshmallow" or better, then you have Toybox. This is a package of command-line tools, handy for ...
3
votes
2answers
5k views

How to check support for ext2 filesystem on android device

I have a android mobile with gingerbread 2.3.4 installed. I want to know if my device(kernel) supports ext2 filesystem. Is there any terminal command to check the support for ext2 filesystem ?
3
votes
2answers
2k views

Why are there 2 folders SDCard and SDCard2 on a ViewSonic GTablet?

I see that there's a folder named sdcard and another named sdcard2 on a ViewSonic GTablet. If I put the SD card in my PC, the sdcard2 folder is recognized by the PC. If I connect the tablet to the ...
3
votes
2answers
9k views

read-only file system on emulator

I need to change /system/etc/hosts file on my emulator, and no matter what I do, I get "read-only file system" error. Does anyone know how to do it? I tried editing the file manually as su in adb ...
3
votes
1answer
3k views

Can I write to my device's root filesystem? Will my changes persist across reboots?

When I open up a terminal emulator and run the mount command, it indicates that my Android device's root filesystem (/) is of filesystem type rootfs. What is rootfs? Can I write to it? Will my changes ...