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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5answers
30k 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 ...
3
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1answer
1k views

SD card directory is “split” on new phone

I moved from a Samsung Mesmerize (Galaxy S, Android 2.2) to a Motorola Electrify (Android 2.3) and the Electrify is reading my SD card differently. My old data is now stored in /mnt/sdcard-ext instead ...
3
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1answer
5k views

How to resize the /data F2FS partition

Context: I wiped all the partitions from my Moto G device with the TWRP recovery and installed Cyanogen 13 on it. Then I had issues when enabling Encryption: the phone just restarts but does not ...
3
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1answer
7k views

Enabling USB debugging from open file system access using custom recovery

Of course this should be possible, but finding the correct files to modify is the real question. Assuming we can boot into a custom recovery and have full access to the file system, has anyone ...
3
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1answer
2k views

The /sdcard direcory and other directory conventions: how is the Android filesystem structured?

I am using the "adb shell" command to access either of an LG P690 (device A) or a Samsung Galaxy SIII (device B). Device A also has a 32GB microSD card plugged in while device B does not. When fromthe ...
3
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1answer
16k views

BusyBox `ln -s`: How do I create symlink to a directory on external SD-card?

How do I create symlink to a directory on external SD-card? Do I have to edit /etc/passwd and add user or root to the sdcard_r group--since, I see that the /storage/ location is owned by sdcard_r? Do ...
3
votes
1answer
8k views

Creating App and Swap partition for Android

I have got Karbonn A5+. I dont know how much ROM, RAM it exactly have. When I go to Settings > Applications > Manage Application it shows 191MB used, 11MB free. But, when I open Advanced Task Killer, ...
3
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1answer
281 views

Is it possible to list all files on SD card created by a certain application?

I would like to see which files on my SD card a certain application has written. How would I go about doing it? I don't know how writing files from an application works in Android. But maybe these ...
3
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1answer
1k views

Would it be possible to use the SD card as the root filesystem

This may sound stupid to someone who knows more about Android, but I don't and it it has been bugging me for some time now. Since Android is at its core a Linux system, shouldn't it be possible to ...
3
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1answer
193 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 ...
3
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1answer
1k views

Unknown file type containing a virus

I will try to keep the story as short as possible just so you can have a more clear view of what is my concern. While, I was browsing the Internet on my phone using the Chrome Browser App, I got a ...
3
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1answer
150 views

When should I run a consistency check on my removable MicroSD card?

I own an Android device with a removable MicroSD card. The card uses either FAT32 or ExFAT technology. These are "non-journaling filesystem" technologies, so the data on the cards can become corrupted ...
3
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1answer
4k views

What are `storage/emulated`, `mnt/sdcard`, `storage/sdcard`?

There have been questions about the old sdcard turning into sdcard0, which I understand to be part of the multiuser feature. What I don't understand is the 3 paths in the questions. Some of them look ...
3
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2answers
477 views

selecting a chime in Caynax Hourly Chime

In Caynax Hourly Chime when I select chime option a dialog with a Search button appears. But while I have some sound file in my SD it do not show them. How can I choose chime file in this app?
3
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1answer
2k views

How to free up more storage (upgrading to 4.2 made me lose 6GB)?

So this morning, I bought a new game and it required a large file download. I went to download it and a message told me that I had 0mb of space remaining. This seemed odd to me because last time I ...
3
votes
1answer
725 views

Why do write attempts to /system/priv-app cause /system to switch to read-only?

I'm trying to write files to the /system/priv-app directory. I boot into recovery (TWRP) and run adb shell. ~ # mount /system ~ # mount rootfs on / type rootfs (rw,seclabel) ... /dev/block/mmcblkXXXX ...
3
votes
1answer
926 views

How to check the VPN setting created by an app on an Android device?

Many VPN apps would create VPN profiles on the Android device. Unlike VPN profiles create by the user, they cannot be edited, and therefore the user cannot see the setting of said profile. With a ...
3
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1answer
4k views

Change File System of Internal Storage to EXT4

I have an Ainol tablet Novo 7, which has 16GB internal storage in FAT32 format. Due to the file system restriction, it can accept up to 4GB file size only. How can I format the internal storage to ...
3
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1answer
803 views

How to detect filesystem type of un-mounted partition?

These commands won't work: fdisk -l #outputs nothing... su; fdisk -l #nothing.. sudo fdisk -l #sudo not found... parted -l #parted not found... Is there any app that shows that easly? ...
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2answers
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 ...
3
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1answer
4k views

Is there a way to view the file size of an image without downloading any apps?

Got a new phone (Nexus S) and having some issues with picture messaging. I want to check the size of the picture I took with the camera, but I can't seem to do this. As I don't have a data plan yet, ...
3
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0answers
483 views

Mount encrypted emulated avd userdata-qemu.img.qcow2

I'm trying to make a backup of my AVD. To speed things up, I like to make incremental backups. Backing up the *.img.qcow2 file(s) is inefficient. I'd like to be able to mount the filesystem that ...
3
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0answers
138 views

Is there a way to replace the Android system file manager with a third-party file manager?

I'm using an OnePlus 3 with Android 6 (Marshmallow). For me the standard Android system file manager that opens when you want to send a photo or video via WhatsApp is just horrible. It's slow and you ...
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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 ...
3
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4answers
37k views

Files with names with unicode characters get corrupted in SD Card

When mounting my SD Card on my galaxy SIII files and folders in the card with characters that aren't in the ASCII range get corrupted. This happens by simply selecting 'Unmount card' in the Storage ...
3
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3answers
6k views

How to clean up old application folders from prior ROM?

I installed CM10 on my GS2, and during the process I didn't format the file system as I wanted to retain my photos and music on the device. I was aware of an app called "SD Maid" that is supposed to ...
3
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2answers
543 views

System audio files appearing in playlist

I wasn't satisfied with the selection of sounds the phone was giving me for the alarm, so I installed ES File Explorer and picked out some ringtone sounds from the phone's system/media/audio folder. ...
2
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2answers
458 views

Why is checking Android filesystem possibly harmful?

I just had an idea to do a filesystem check of all Android partitions when I noticed there is an option to do that for /data /system /cache in STweaks app (which comes also with Dorimanx Kernel) but ...
2
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1answer
6k views

Why is EXT3 not supported on Android?

Android uses the Linux kernel instead of some "Android kernel", so why is ext3 not supported on Android 2.3?
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1answer
3k views

Please explain the android partition structure to me?

I've tried finding the answer myself, but everything that I am able to see seems to miss out the really basic first steps. Here's my logic: FIRST Look at the phone's specification. Lets say Samsung ...
2
votes
1answer
59k views

What are the folders 'burstlyImageCache' and 'burstlyVideoCache' and can I delete them?

I'm interested in the following two folders found on my Samsung SIII: /storage/sdcard0/burstlyImageCache /storage/sdcard0/burstlyVideoCache Together they only come to about 1.5 MB on my device. ...
2
votes
1answer
8k views

Terminal “Permission Denied” - Need more info on error message

I am trying to run an executable from the android terminal with root permissions, but I am constantly receiving the following error: [ExecutableName] : permission denied I am confirmed to be loged ...
2
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3answers
1k views

How to access files via localhost in firefox browser

I'm looking for a way to access my devices files in Firefox. The reason for this is I want to use an extension to read *.md file. I know that I can use file:/// to access files, but the extension can'...
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 ...
2
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4answers
19k views

Windows mount android file system

I want to edit some files on my phone but I can not access the root folder on my phone. I'm using a rooted Google Nexus 5 running Android 5.0. I can read/write to my /, and /system by Android's ES ...
2
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2answers
14k views

How to manage Android's filesystem from a Mac?

Is there some way that I can explore, and possibly modify, my Android's file system from my Mac? IOW, I would like to use my desktop Mac as the interface to access and modify my phone's filesystem, ...
2
votes
2answers
6k views

How to create a symlink after I rooted my Samsung galaxy w GT-i8150?

How do I create a symlink from my /sdcard/NaviSEA to point to /sdcard/external_sd/SD/NaviSEA? Even after rooting my device I still get "Operation not permitted" error and I did allow with su in my ...
2
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1answer
1k 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 ...
2
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1answer
11k views

Editing fstab to mount /data from a different partition

Is it possible to edit the fstab to mount /data, /cache etc. from a different partition on the a.internal memory? b.external sdcard? Details: The default partition for /data and /cache are too small ...
2
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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?
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2answers
2k views

copy folder structure from internal memory to sd-card

I use the amazon downloader to buy mp3s with my android device. My problem now is that I cannot change the download folder but want the files to be moved to my sdcard. I already found a cron tool to ...
2
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2answers
606 views

How does it looks like on the galaxy tab?

Im wondering about the filesystem on the galaxy tab, could i for example connect it to a camera, transfer some images, fix red eyes and transfer the images to a storage device like a usb pen or a ...
2
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1answer
1k views

Create flash-friendly file system on microSD card (not FAT32)

Yesterday I noticed that I destroyed my just a couple of months old 32GB large microSD card. I wasn't even able to create a new file system on it or change the partition table, so it became completely ...
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2answers
90 views

How to create a shortcut to some file in another folder?

I have a PDF on the folder ExtSD/Documents/. I need to make a shortcut of this file to the folder ExtSD/CurrentlyReading/. So simple on Windows... Apparently never asked on Android. If it's of any ...
2
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1answer
399 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?
2
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1answer
584 views

Which part of Android directories contains so-called proprietary blobs?

When building AOSP (Android Open Source Project) or LineageOS, there is a tool named breakfast. It downloads proprietary blobs and integrates them to the source tree. I have read this article, does ...
2
votes
1answer
593 views

How can one create a file shortcut inside the Android file system?

I don't want to create a file shortcut on the desktop, I want to create a shortcut inside the Pictures folder to the DCIM folder. My mom is able to handle tech stuff, she used to work for HP. But she'...
2
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5answers
18k 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() ...
2
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2answers
2k views

Is there a way to access the phone filesystem from computer, wireless?

Known solutions: USB Mass Storage (sadly, mostly deprecated on Android 4, 5, etc.). MTP, and I know its benefits (a lot) and its weaknesses (browsing on a MTP drive with Windows Explorer has poor ...
2
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1answer
1k views

Why Changing Permissions For Some Systems Files is Not Allowed?

I have a rooted tablet and while browsing my files, i came along this folder: (./0/android/data) in the internal storage ... lets say (X-plore file browser) has the folder: (./0/android/data/x-plore)....