A file system is the logical structure to organize (store, retrieve and update) data on a storage device.

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How toolbox symlinks work

On my Android emulator, the /system/bin folder contains several symlinks that point to the toolbox binary: # ls -l /system/bin ls -l /system/bin [SNIP] lrwxr-xr-x root shell 2012-08-...
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4k 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 ?
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2k views

Is there an Android web browser which can upload files from a local file system?

I am considering buying and Android tablet and want to know if this function is possible.
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23 views

How to create a file folder for use with Listen Audiobook player

I can't figure out how to use this Listen book player, I've Installed. First I see this. Hitting OK, I see this: I can't understand how to tell it where to find my books. I've downloaded one ...
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179 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 ...
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102 views

How can you get a local filesystem link of an offline-accessible PDF file in Dropbox?

I would like to get a link to a pdf file in my local Dropbox of my android. This is because I want to access the file by the syntax /local/system/something/file.pdf#page=116 in Internet Browser. I ...
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327 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 ...
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324 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 ...
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4k views

Create a dd image of a Android 4.4.4 for forensics?

I'm a little new to the Android file system, I'm doing a project for a digital forensics class and I want to create a bit-for-bit image of my Nexus 5 running 4.4.4 stock, rooted. The normal way I ...
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3k 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 ...
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930 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?
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9k views

Link2SD proper usage

I have a 64 GB micro SD card. I partitioned 1.2 GB as Ext2 with Mini Partitioner (highest option was about 4 GB). This is great and all, but from all of the literature I've read, Link2SD seems like ...
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17k views

I'm seeing duplicated images and videos on Gallery

I'm facing a strange situation on my Nexus 4, with Android version 4.2.2. I've being using it for the past 2 months without any issues whatsoever (other than a "regular" battery performance), but ...
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1k views

How can I access files on a Seagate GoFlex Satellite wifi or Kingston Wi-Drive?

My final goal is to programmaticaly access files on a Wifi/USB storage device, like a Seagate GoFlex Satellite wifi or Kingston Wi-Drive (preferred because less expensive). The storage devices are ...
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2k views

Android chroot ubuntu - is it possible to get ubuntu to recognise usb devices

I've managed to setup the chroot but I'm unsure how to get the chroot to recognise usb devices. I'll be doing so work with microcontrollers hence I neeed to to recognise my usb based programmer. For ...
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2k views

How can I browse my Mac's hard drives with my Android phone?

Is there any Android software that can understand afp or browse OS X filesystems some other way ?
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117 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 ...
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1k views

No USB Storage Mode on GalaxyNexus running 4.2.2

I have a GalaxyNexus running Android 4.2.2 I just want to quickly backup some data files to my PC. I'm pretty sure I've done this many times before, but I guess not on this phone. I have the Android ...
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How do I record a ~45 minute 1080p video with external mic?

I am currently using the camcorder function that comes with lgcamera because it allows me to use the microphone as the source of sound input. But I found that it stops when the recording size reaches ...
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454 views

Should the sdcard support case-sensitive files?

I've been testing one of my apps to see how it handles filenames in UPPER-CASE. I thought the Android libraries and system was case sensitive for filenames, however I eventually discovered that files ...
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794 views

External harddrive case to spin-down drive when idle

I try to make external 2.5 hard drives automatically spin down when idle and connected to android devices. The device I have got in mind is a HDMI TV-Stick with USB connector. I tried a few cases/...
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2answers
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I modified vold.fstab and lost access to my SD card

Background: I have Samsung Galaxy Ace GT-S5830, which has very low internal memory (181 MB). I have an external micro SD card of 16 GB, but still couldn't install many apps due to insufficient ...
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How to partition SD card in HTC One X?

I was trying to create ext2/ext3/ext4 partitions on the SD card. I tried ClockworkMod recovery and it didn't work. Nothing seems to have happened. I also tried using MiniTool and that also failed. I ...
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5k views

Symlink: operation not permitted

After installing a custom ROM on my Galaxy s i9000, the external_sd symlink is broken. So, I wanted to get this symlink back. I used the following code in Terminal Emulator (yes i am rooted with ...
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481 views

SD Card partition named differently on different devices - breaks music player

I have recently moved from a Droid 2 to Droid 3, both running Android 2.3. The same SD card registers as "sdcard" on the D2, and "sdcard ext" on D3. Probably for this reason, I am having problems with ...
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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, ...
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351 views

Periodic filesystem checks are a very good idea. Do any major flagship devices ever do them automatically?

It's a very good idea for your OS to do periodic filesystem checks. Here's why. Microsoft program manager Kiran Bangalore writes that there are certain cases in which a filesystem can become ...
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68 views

Retrieve Stock Browser History?

I have a Galaxy S4 and today 45 browser tabs I've been using for about six months just disappeared (should have been bookmarking things, yes). Is there a way I can retrieve my browser history via my ...
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104 views

Is there any working method to mount Ext4 partitions on 64 bit Android 5?

Is seems that, as for today, there are no working methods (apps or hacks) to make Ext4 partitions work (read/write) on my Android v5.1 64 bits. My device is a Jiayu S3 with a Xtreme ROM (not stock, ...
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530 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 ...
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210 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? ...
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83 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 ...
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290 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 ...
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881 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 ...
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355 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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How do the various tools to convert a system image to f2fs work?

Recently I've been trying to install a f2fs compatible rom to my old and slow nexus7. I got as far as flashing a new recovery image and reformatting the device partitions to the new file system, but ...
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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 ...
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1answer
860 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, ...
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200 views

File transfer with multiple users

On a rooted Nexus 7 (2013), I have set up a second user. When I plug the usb cable to my mac, I can see all the files for the main user (using the Android File Transfer app from Google). However, ...
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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 ...
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413 views

“Low on space” message, but nothing appears full

GalaxyS (SGH-I897), running Android 4.0.4 Short problem description I keep getting "Low on Space: Phone storage space is getting low" error in my notifications bar, but neither the SD card nor the ...
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1answer
677 views

Samsung Galaxy S4 play edition and exFat

Does the Play version of the Galaxy s4 include support for exFat in the sdcard reader? Or is exFat support one of the extras that Samsung adds to the device (presumably since they made the licencing ...
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225 views

Would any of the advanced Linux/UNIX filesystems be viable on Android?

I know ext4 is already used as an internal filesystem but I wondered if there would be anything gained by using something like btrfs or ZFS? I know they are meant for more server-oriented situations ...
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835 views

Can I delete a file called 'UPDATE' in the dload folder, or will this delete the operating system?

I recently received low space warnings on my Huawei Honor so I connected my phone to the Mac and observed the files: As you can see, perhaps 75% is taken up by a file called 'UPDATE' in the dload ...
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104 views

How can I “Share To” a network folder from my photo gallery?

I have an HTC Thunderbolt running Ice Cream Sandwich If I open up my photo gallery and tap on a picture, the "Share" option appears. Clicking on this gives me some options, such as Facebook, ...
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USB file transfer only works when HTC One X is connected in internet pass-through mode

When I connect my HTC One X via USB to my PC, I can see my Android storage only when my phone is connected in internet pass-through mode. I set the mode by Settings > More > Mobile network ...
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400 views

Persisting permissions on /mnt/shell after reboot

CWM Nandroid backups are being stored in /mnt/shell/emulated/clockworkmod I want to use DropSync (or something similar) to automatically upload the contents of this folder to Dropbox as a backup ...
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269 views

Why is one folder on my Samsung Galaxy SII not being properly showed on PC?

There is one folder on my device (not in the microSD card) with mp3 files that used to work perfectly but suddenly started to cause a malfunction when I try to open it on a PC. It is said to have no ...
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985 views

Any way to use another name for the external_sdcard folder?

On my Android tablet, the SD Card is shown as an external_sdcard folder, no matter how I rename the card. Personally I don't like the auto-assigned folder name. Is there a way to use a different ...
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Viewing File System through a Windows Laptop

I have a HTC Desire X running Android 4.0.4 (not rooted). When I connect my phone to my Win7 Laptop, from my laptop, this is the filesystem I see LOST.DIR (Empty) Android\data\com.htc.album....