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

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101 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 ...
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1answer
551 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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870 views

Is it safe to rename, delete or disable system/bin/mediaserver?

mediaserver is constantly running in the background eating up CPU. I don't care at this point if I don't get to use the gallery app and I'm fed up with having to reboot every time I hop out of my ...
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1answer
759 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?
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269 views

Where should I save images to have them appear in the Gallery app?

Running KitKat, I want to extract a zip file with photos and place them in a folder where the Gallery app will find them. I'm using Android File Manager and Easy Unrar Lite to move files around and ...
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2answers
1k views

How do I grant su rights to the File Manager app?

I'm digging around trying to find a Angry Birds save files but File Manager is lying about what's in each folder. How can I give that app su rights? Can I launch it from the command line after typing ...
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1answer
55 views

File size in different devices [closed]

I'm working on an Android app which downloads new-updated resources from a remote server whose platform isn't specified yet. The app compares the size of the pre-downloaded local file and the remote ...
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1answer
706 views

Missing 2.2 GB of space on my micro SD card

I pulled my micro SD card out of my phone (LG G3) and inserted it into my PC (Kubuntu 14.04). I was in the process of moving several large video files off of the SD card onto my computer. Moving these ...
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2answers
143 views

Where do I store my files such that they can be found?

I'm trying to install an app from an apk file, and I've moved it to my phone via USB; however, I cannot locate it. What would be an easy location to which I could move the apk file such that it would ...
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235 views

Is Android FAT / FAT32 implementation power failure resilient?

Does the android FAT/32 implementation handle sudden battery removal? I know that Symbian's 'Rugged FAT' (efat32.fsy) and Microsoft's T-Fat implement this, but I've not been able to find any ...
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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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62 views

How can I place a text file on my homescreen for editing?

I would like to place a textfile from my SD-card todo.txt on my home screen so I can click on it to edit the content and when I close it only that file would be saved. Ideally there would be a git ...
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1answer
86 views

What does deleting a file really do? [closed]

When I run an app, select a file, and choose "delete" what happens then: the file is moved to trash (and later is removed by OS when some conditions are met) the file is removed from the filesystem ...
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1answer
6k views

Why does Android use fuse for internal SD card mount? [closed]

The android ICS or later version(JB) use /data/media directory for internal SD card, and use fuse for mounting the emulator internal sd card device (/dev/fuse). As we know if we use fuse, the files ...
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1answer
453 views

What might cause my phone to spontaneously stop booting into its custom ROM and only reboot into recovery mode?

My phone is a Samsung Vibrant running CyanogenMod 10.0 (Android 4.1.2). I rebooted my phone, as I do every few days, and instead of starting up CyanogenMod as usual, it dumped me into the ...
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1answer
800 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 ...
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842 views

Can I delete Zinio pdf files?

There are password protected page1.pdf, page2.pdf, etc... under mnt/sdcard/com.zinio.mobile.android.reader/9380198313/123123231/32123213 etc... Can I delete them?
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22 views

Photos / Files / Media permission

I've seen a lot of apps that have media / files permission access requested when installing from Play Store. Does that mean they can go at my personal photos and send it back to themselves? Sorry if ...
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1answer
571 views

/system cannot be remounted as RW, even when rooted (Sony Xperia E3)

I rooted my Sony Xperia E3 (D2203) a while ago using Kingroot, which worked flawlessly. Before rooting my device, /system could be accessed, which is how root was installed in the first place. ...
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1answer
258 views

Moving /storage/sdcard0 from NAND to a removable MicroSD card: will it break anything?

Background information I own a Samsung Galaxy S Relay 4G running Android 4.1.2. It comes with 8 GB of built-in NAND flash, which is almost full by now. Luckily, it also has a MicroSD card slot. My ...
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1answer
47 views

Can I access the filesystem of an android device?

I have an android device that doesn't start because it tries to activate carrier's network. Its out-of-contact CDMA mobile which was ported to another carrier. I accidently did a reset and after that ...
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1answer
607 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: ...
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133 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 ...
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1answer
193 views

Read/write application data on android

I want to view data of a specific application and ideally modify the data and upload it back. I know the application data files are implicitly protected to prevent malicious application stealing ...
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1answer
798 views

File deleting problems after Android v4.4.2 upgrade? [duplicate]

Phone: Samsung Galaxy S3 Carrier: AT&T (US) Upgrade Path: v4.2 to v4.4.2 Is anyone else noticing SD card file deleting issues after the upgrade to Android v4.4.2? I use CoolReader to view ...
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234 views

execute permissions on fuse/fat filesystem

I've successfully cross-compiled Ruby for Android and everything goes ok in the emulator. But while I'm testing these funny things on my device (Nexus4) I noticed that /sdcard (or ...
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5k views

Restore deleted system

I have formatted the system using twrp now I can't flash the stock rom on my galaxy s3 sprint. I am getting the file_getprop: failed to stat "system/build.prop" status 7 every time I try to flash the ...
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1k views

Where to place .mp4 files in Nexus 7?

I have connected my Nexus 7 to my Macbook, and I am using the app Android File Transfer. I want to place an .mp4 movie, but I am not sure where to place it. I have tried placing it in the Movies ...
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533 views

Where is the temp file of recorder in Android?

Galaxy Note2 4.3 Samsung firmware. Recording for 1 hour with the highest quality, accidentally pressed "back" button, nothing saved. Usually the file would be saved automatically even if "back" is ...
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1answer
3k views

Where to find IP address in file system (e.g. proc or sys)

Is there a way to get the IP (v4) address of an interface in the file system of Android? I know I could use ifconfig or netcfg but I would like to use a monitoring tool which can only access files and ...
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1answer
414 views

Make iso of sdcard + data directory

I need to be able to make an iso file of the /mnt/sdcard and /data/ directories on both rooted and nonrooted phones(for forensic analysis). Older phones I can mount to my linux machine and run mkisofs ...
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6k views

No files accessible after upgrade to CM10

I understand that Cyanogenmod 10 is still in early access, but I installed a cm-10-20120910-NIGHTLY-i9100 build to my Samsung Galaxy S 2 anyways. I had a stock 4.0.4 before. I heard that this problem ...
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2k views

How to control the file system on Android from Win7 file explorer?

I haven't found any good solution for managing files on my Galaxy S2 from Win7. I've tested Kies and some other software but I'd like to be able to move files, create directories etc. through file ...
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1answer
4k views

Can open an HTML file with Browser but not HTMLViewer

I have an HTML file on my SD card. Opening it with "Browser" works as expected. However, if I try to open it with the built-in app "HTMLViewer", I receive the following error message: Web page ...
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1answer
3k views

Android 2.2 - External SD card not working - says “Blank External SD card” — Why?

OS: Android 2.2 Device: Samsung Galaxy S All of a sudden my external SD card has stopped working. Error Notification: > Blank External SD card > > SD card blank or has unsupported file ...
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39 views

Can't remove remaining facebook files

so I have 2 remaining .cnt files in /data/data/com.facebook.katana/cache/image/v2.ols100.1/44 and /data/data/com.facebook.katana/cache/image/v2.ols100.1/45 The thing is that they can't be removed in ...
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27 views

linux kernel not seen from android filesystem?

I'm reading 'embedded linux' and in chp.6 "filesystems" there is a figure that I do not understand. here it says that the 'linux kernel' is not seen from android filesystem. This give me some ...
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115 views

alternatives to add NTFS support to Android kernel

I would like to enjoy of NTFS support for my Android device. The USB-OTG Helper app and also this patch - sdcardfs.ko couldn't help with that. With regard the patch sdcardfs.ko, I have done all the ...
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85 views

how to mount permanently in Android

I've successfully mounted my router device's sdcard on '/mnt/routersd' as follows : #!/system/bin/sh su -c 'busybox mount -o remount,rw /' su -c 'mkdir -p /mnt/routersd' su -c 'busybox mount -o ...
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77 views

Internal storage - free and occuppied space do not add to total

On Sony Xperia Z2, I have 5.6 GB on /storage/emulated/0, then 2.3 GB in /. However, the whole internal storage has 12 GB, and I can only see under 2 GB of free space. Where is the remaining 2 GB?
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135 views

Phone stuck at boot logo, cannot wipe data/factory reset

I will explain what happened: I opened up terminal emulator then typed cd /system/xbinls fsc* then /dev/block/vold/179:17 then mount then my tab got stuck and then it switched off automatically. ...
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106 views

Use a disk image for Link2SD's 2nd partition

Well, this question is targeted for those few devices without support for an external SD card as well as merged storage, for example my Micromax Canvas Knight A350. I thought this up today: If we ...
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0answers
96 views

Incomplete file list when browsing file system of Nexus 5 in Windows 7 / 10

I connected my Nexus 5 (Android 6.0) to my Windows PC via USB (tried both MTP and PTP mode) and noticed that the file list in Explorer was incomplete. I compared the file list in ES on my Android ...
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44 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 ...
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500 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 ...
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7k 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 ...
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1answer
454 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 ...
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1answer
1k 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. ...
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91 views

File system content different on device and on desktop

I've got a Nexus 9 which I'm using to read PDF graphic novels. My process for getting the files onto the device is to connect it to my PC via USB and drag the files into the Download folder on the ...
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140 views

Difference between /mnt/local and /mnt/internal?

I have a WonderMedia 8650 based tablet running Android 4.0.3. The File Manager app shows the internal flash file system as "/mnt/local", I can also see a "/mnt/internal" filesystem that's identical. ...