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

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5
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32 views

1.5 GB limit on file seek addressing?

I am trying to transfer 5.4 GB file form an android internal memory (Sony Xperia Z2). But it seems that most applications have issues addressing the file beyond cca 1.5 GB. They just can't read the ...
3
votes
0answers
575 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 ...
3
votes
0answers
52 views

Setting creation time attribute on exFAT to “atime” from ext4

I have to move files from my internal storage to the SD Card. While cp -p does its job fine to an ext4 formatted card, moving/copying files to exFAT only keeps the file modification time but sets ...
3
votes
0answers
564 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 ...
2
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356 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 ...
2
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0answers
75 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 ...
2
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0answers
112 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, ...
2
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0answers
586 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
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88 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 ...
2
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295 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
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898 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 ...
2
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201 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, ...
2
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414 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 ...
2
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0answers
229 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 ...
2
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0answers
105 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, ...
2
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0answers
5k views

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 ...
2
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0answers
404 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 ...
2
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0answers
991 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 ...
1
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102 views

I can't remount /system as rw. I get an error message: mount: Read-only file system

I'm using a rooted Huawei G7 and i'm trying to install BusyBox, but I keep getting an error. I'm 100% sure this error is because there is some weird write protection on /system. I know this because ...
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0answers
37 views

how to restore mount points

i have a bricked device , after 20 hours of flashing and searching , i found that my device lost some mount points here is the the mount points of my device and here is the mount points of a ...
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0answers
21 views

How do Android Communicate with Storage or External Storage?

I Wants to know that how the android os is communicating with the storage devices, as because I have two USB Devices from same vendor (ScanDisk) and of equal size (8 GB) and having same File System (...
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80 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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0answers
35 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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151 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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133 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 ...
1
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80 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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220 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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144 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
120 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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52 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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552 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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8k 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 ...
1
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0answers
93 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 ...
1
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0answers
156 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. ...
1
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0answers
558 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 ...
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0answers
128 views

Completely Full /system on CM11?

I installed CM11 from this thread on my old Nexus S 4g, thinking I could use it as a tiny server or something. However, it seems that the /system mountpoint, where things like /etc live, is ~100% full:...
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0answers
145 views

Accessing temp files created by an application

I have an application that I know writes temp files to the data/data/app-package directory. Using a file browsing app or windows explorer it seems these directories are sufficiently protected. Is ...
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0answers
161 views

How applications read /data directory on not rooted devices

To access directories like /data in file managers the device should be rooted. My phone is not rooted but I see that anti virus applications can read and scan such directories. If reading these ...
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0answers
374 views

How do I change call recorder file destination?

By default my call recordings are saved on the internal phone memory, in the Sounds directory. How can I change this, e.g. to the external SD card? (Android 4.1.2, Omega ROM v49, inbuilt recording ...
1
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0answers
2k views

Creating a symlink (symbolic link) to files

I'm looking for a way to create a symlink with Android. I know I can write a script but I don't want to spend so much time when perhaps somebody has a better solution? I know app2sd and link2sd, but ...
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0answers
4k views

Why can't I access the files on my SD card?

I have a Motorola Droid Bionic which I recently updated to Android 4.1.2. Since the update, I can no longer access any of the files on the 32GB micro SD card I installed in the phone. I can view all ...
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0answers
196 views

How to hyperlink to file in KingsoftOffice?

I have an Excel spreadsheet created in Windows and open in Kingsoft Office. I would like to be able to create a hyperlink to specific files on the tablet itself. For example, I want to be able to ...
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0answers
564 views

Expand file sysem to entire sd card

I followed very simple instructions http://liliputing.com/2012/03/how-to-dual-boot-cyanogenmod-7-nook-tablet-os-with-a-microsd-card.html1 for extracting cyanogenmod to an sd card for dual booting ...
1
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0answers
768 views

Why would /mnt/sdcard/ not appear?

Using ADB shell to view my Samsung Galaxy Tab 7+, I see a /mnt but no /mnt/sdcard/ where according to fable the photos taken by the camera should reside. Why would the sdcard directory not be there? ...
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184 views

Where are the hidden videos and pictures from Camfiler's VS and/or PS apps?

In Camfiler's PS and VS programs where are my hidden videos and pictures on my SD card for when I back up my card to my computer?
0
votes
0answers
7 views

How to understand the Storage data usage graph?

I decided to be adult and not to mock android developers in the title. But seriously, what kind of math is used to generate the graph below: Just for fun, I did some math. It should look like ...
0
votes
0answers
9 views

Difficulty repairing SD card partition with fsck or e2fsck and using umount

I had problems with the SD card for 2 weeks. It made OS show corrupted messages and rebooted the phone as well. I managed to check the data block integrity with Minitool and no sectors were damaged. I ...
0
votes
0answers
17 views

How to make bind-mounted (mount -o bind) folders visible for non-root users?

I want to mount-bind an app data folder in /data/data/... to a user subfolder in order to automatically synchronise the contents for backup purposes. As root I use the following command: mount -o ...
0
votes
0answers
35 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 ...
0
votes
0answers
81 views

Check and fix external SDCard within Android Marshmallow, formated as internal

This is very similar to this question, except now in 6.0-marshmallow. The external sdcard is now mounted as a fuse device: /dev/fuse on /storage/emulated type fuse (rw,nosuid,nodev,noexec,noatime,...