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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16
votes
3answers
266k views

Cannot find where Google Play Music stores downloaded files (different from similar posts)

About a year or two ago, I decided to use Google Play Music as my "cloud host", so I took all of my old music that I'd had sitting on my computer, and uploaded it to Google Play Music. This is all my ...
0
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2answers
7k views

Missing 20 Gigabyte of Free Space

I've recently noticed that my Galaxy Note 3 32GB model ran out of storage. My Samsung File Explorer App says that I've got about 3GB of storage left of 32GB. My problem now is that I can't figure out ...
0
votes
0answers
481 views

Which filesystems with wear leveling does Android support?

So I bought 64gb micro SD card which was formatted as exFAT. I can't use it with Android and I am actually very happy now that I have a good reason to get rid of this ms crap. In particular I do not ...
3
votes
1answer
2k 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 ...
2
votes
1answer
1k views

Where does Lollipop stores notification policy?

Unlike its predecessor Android versions which saves notification policy in the file /data/system/notification_policy.xml (the file which saves the package name of apps you've selected to stop giving ...
1
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0answers
75 views

What is the real used space on data partition of my phone?

When selecting data partition on my phone (HTC One M8), TWRP says it's going to back up 5448 Mb. But 'df' command says there are 8319 Mb used from 10934 total. And ES Explorer displays the size of /...
0
votes
0answers
81 views

Change the filesystem mounted when plugged in to USB

Is there a way to change the mount location when plugging a device into USB? I want to move it to the root directory. I am rooted. Please note that I want no setup done on the PC, that is, do not ...
1
vote
0answers
921 views

Where are the lollipop OTA system upgrade files stored?

Android devices automatically download OTA system update files and store them on your device until you install them. Then you get a notification that the file has been downloaded. I do not want to ...
1
vote
1answer
6k views

Access Android System Partition from Linux

What is the best way to access the Android system partition via USB of any device with Linux (not rooted device) Need to change some files in the system folders...
0
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0answers
10k views

“.walkfree” folder automatically created in SD card, and APKs downloaded into it without any notification

In my SD card a folder is created on its own named .walkfree by an unknown source, and in that it automatically downloads .apk files showing no notification of being downloaded, and if deleted, a new ...
0
votes
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 ...
4
votes
3answers
5k 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 ...
2
votes
0answers
1k views

File copied to /system/bin keeps disappearing

After copying Sqlite3 to by /system/bin folder, the file disappears. I can successfully change the folder to rw and modify the file properties on sqlite3. However, as soon as I remount my /system as ...
2
votes
1answer
2k 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? ...
2
votes
0answers
206 views

What are these small 8-4-4-4-12 hexdigits-named files in root dir?

(Post edited to add more info.) My Android phone contains, in the lowest user-accessible directories of both phone storage and SD card, several small files named xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx ...
1
vote
1answer
789 views

Where I can find factory home screen layout file?

Where I can find factory home screen layout file? I would like modify default layout which will persist after I will make a hard reset. Best Edit device: Lenovo A6000, kitkat 4.4.4 rom: orignal ...
2
votes
1answer
2k views

What is the content of data/misc/wifi/softap.conf?

I was going through a question about how to find a saved password in a rooted phone and while doing this I found a file in data/misc/wifi/softap.conf. What is the content of this file?
0
votes
1answer
554 views

how do I browse to files on my external sdcard when the phone is connected using MTP?

I have connected my phone to my computer (Win7) using MTP. I can browse to the H:\ drive and see things like music,amazonmp3, alogcat and so on. But when I use my phone's file manager to try and find ...
0
votes
1answer
116 views

Filesytem on Android

I'm totally confused regarding Android file system and its relation to SD card. While browsing my Asus Nexus 7 (2013) with file manager Astro from very root catalog I found directory sdcard. But ...
0
votes
1answer
5k views

Uninstall programs that are not visible in Application manager

I have an Asus Nexus 7 that is full of games that take up all 29 GB of memory. The kids installed these games, and they are not visible in the Application Manager. Perhaps they were installed in a ...
1
vote
1answer
3k views

ES file explorer, how can I get the complete folder path?

Sometimes ES file explorer will open directly into a folder, for example if I download a file, it will ask if I want to open the files containing folder. I select yes and then get something like this: ...
3
votes
1answer
3k views

Folder in root directory (/) gets automatically deleted after reboot

I have a rooted samsung galaxy y phone running android 2.3.6 As a root user , I successfully created "usr" directory in / path & set permission 755. But after rebooting my phone, usr directory ...
0
votes
1answer
794 views

Help I accidentally removed the Media Scanner

A couple of hours ago I was cleaning out unnecessary apps on my phone (LG G3) using 3C Toolbox when I must have accidentally removed the app responsible for scanning my media. The Gallery & Music ...
1
vote
1answer
1k views

/storage/emulated/legacy is read only

For some reason, no apps on my phone (including adb, after running su) can modify any files in any subdirectory of /storage. I also can't use my file manager on my computer to edit, create, or delete ...
3
votes
5answers
37k views

Is it safe to delete all empty folders in Android?

Almost every Android "cleaning" app (such as SD Maid) includes the ability to delete all empty folders. In operating systems such as Windows, this is generally not a good idea. Windows applications ...
0
votes
1answer
166 views

How can I make persistent changes in root directory (/)?

I have to edit my fstab in android 4.4 but the root is mounted in read only. I've try to remount the root with mount -o rw,remount /And I can edit the root files but when I reboot the device the ...
4
votes
1answer
15k 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-...
2
votes
0answers
664 views

Select file from Downloads to upload via web form

I'm on a Samsung Galaxy S3 and want to upload a file from my Downloads folder to a website using a form on that web page. But when I click the button to browse for a file to upload, I can only select ...
2
votes
1answer
681 views

Shred an internal or system partition

There are quite a few apps that lets a user delete the media or data partitions so it won't be recoverable - by re-writing "junk" data over and over again on the free storage space. Still, is there ...
5
votes
1answer
8k 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. ...
37
votes
6answers
131k views

Best file system for an external SD card

I have a Galaxy S5 with Android 5 and got a new 64 GB SD card. What is the best file system for the SD card? FAT32 is not an option because I want files >4GB. Which file system offers the best ...
8
votes
3answers
24k views

How to find out which file system is used by my device?

How do I find out which file system is used by my device's /system, /data and other partitions?
3
votes
0answers
1k views

Should I switch to F2FS?

I've heard a lot of hype about Samsung's filesystem named Flash-Friendly File System (or F2FS for short). I've heard about cases where the device apparently worked faster after switching to this ...
0
votes
1answer
409 views

With the stock Gallery app, how can I open an arbitrary image file by specifying its filesystem path?

I would like to know whether it is possible to open an arbitrary image file with the stock Gallery app (as distributed with the Samsung Galaxy SIII) by navigating the filesystem and drilling down the ...
0
votes
0answers
568 views

Edited build.prop of HCl me sync 1.0

I recently rooted my HCl me sync 1.0(u3) and changed the build.prop to download some unsupported app. But when I rebooted the tab it stuck in a bootloop(with the screen orientation changed). I have a ...
7
votes
1answer
4k views

How to “mount --bind” directories in Android 4.4?

I am just wondering is there a way to bind an internal /sdcard folder to another internal /sdcard folder and normal apps can write into it for Android versions since 4.4? I have a folder named ./...
6
votes
2answers
258 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 ...
0
votes
0answers
383 views

Unable to find files copied from pc to internal storage

I have copied files (around 2GB) to my android phone's internal storage from my friend's pc. But I'm unable to find those files either by using file manager(root) or from my pc. When I checked my ...
2
votes
1answer
3k views

How can I determine the block size of the filesystem on my Android?

I'm creating a bunch of flash cards for use with AnkiDroid and many of them contain images or sound files. I would like to find a balance between image/audio file size, and clarity, without wasting a ...
0
votes
1answer
453 views

How can I restore a deleted file that I should not have deleted?

I used titanium backup to delete something I shouldn't have deleted and than I factory reseted my phone and now I can't log in with my Google accounts ,can anybody please tell me what I have got to ...
2
votes
1answer
618 views

Replaced /system/bin/toolbox. How to I revert that?

I renamed the original /system/bin/toolbox" to "toolbox_alt". I replaced the file /system/bin/toolbox with a file that was supposed to work, but doesn't work at all. My filemanagers and the most ...
0
votes
2answers
7k views

Galaxy S4's LCD broken. How do I access hidden folders in the storage using computer?

I recently broke my screen entirely so the touch function and LCD do not work at all on my Samsung Galaxy S4. I managed to plug in a keyboard to my phone to input my pass-code in order to unlock the ...
0
votes
3answers
749 views

cannot delete file with strange character

I am using JellyBean 4.1.2. There is a directory with a file that is with stange character. I use many app to delete it but did not success. And I use shell to look at it. When I issue ls command. it ...
2
votes
2answers
3k views

Where in the filesystem are settings saved? Namely ADB backup password

Where in the phone filesystem are settings saved? I've lost my ADB backup password and simply want to delete it. If it affects other settings that won't matter too much. I will be interfacing the ...
0
votes
0answers
814 views

My Files is running very slow

When I open up My Files and select All Files the phone is processing for multiple minutes until i can do anything. It says Verwerken... in dutch (Processing). Once done after a moment it does the same....
1
vote
1answer
545 views

File permission os SD card (FAT32)

Android uses FUSE for SD cards. Does FUSE support file permissions for SD card? If no - how do I install some apps on SD card? Cause there is no support for symlinks, execution permission etc.
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 ...
23
votes
3answers
39k views

Which filesystem does Android attach to the root directory?

I know that Android uses FAT32 for SD cards and mounts them via FUSE. But which FS is attached at /? Some kind of ext? ZFS?
1
vote
1answer
427 views

40GB of thumbnails in a 16GB device [duplicate]

I just found that my /sdcard/DCIM/.thumbnails folder grew to more than 40GB. Two .thumbdata3 files each large 20GB. My Galaxy S3 has only 16GB of internal storage. These files prevent me from backing ...
2
votes
1answer
630 views

Recover files of an App

My phone is a Motorola MOTO G (first generation). Due to some troubles, I had recovered the factory settings of my phone. But I forget to backup some data of an app (Tricount). A this point my phone ...

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