General :: How To Read / Write Ext3 File System Image In Ubuntu

Feb 18, 2012

I developed a cramfs rom for the np7 after user dochoppy found root for the nextbook premium 7 tablet, but he then converted to ext3 which because its packed with features will be more popular. So I am trying to edit his ext3 rom in Ubuntu 11.10 and here is what I do:

1. Copy and paste system.img to desktop
2. Create a folder called system on desktop
3. In command prompt:
cd ~/Desktop
Sudo mount -t ext3 -o loop system.img system
(Asks for pw)
4. Doc said something about only being able to edit as root, so after some Googling I find out how to create a program that grants root.
5. (Open "run as" program) then I type "nautilus /home"
(Asks for pw)
6. Navigate to mounted system and I have read/write privileges (but only in this window)
7. View the system mount properties, and it says I have 14.2 mb free space on device
8. Delete files throughout the system folder to make room (but when I refresh properties, free space increase doesn't show)
9. Try to add my own files after deleting some others, ans rather than using the increased space, it just fills the fourteen megs before telling me "device is out of memory "

why is the system not physically making the proper system increase and decreases.

General :: How to read / write ext3 file system image in Ubuntu


General :: Huawei U8800 Ideos X5 V2.3.5 - Not Able To Mount System As Read / Write Properly

Nov 13, 2012

I'm having a problem with ES file explorer. After several days I managed to root my HUawei U8800 Ideos X5 (Android 2.3.5) and obviously one of the next steps is installing CWMR. Unfortunately I'm failing here too. I tried to copy the recovery.img to the .cust_backup/image, but it keeps to say copy failed. Root access was given and I checked all four boxes in root settings. Someone in a german forum told me to update the binarys in SU, which failed too (it says sth like copy su to /system -> failed!). I'm not even sure ES FE would work if the binarys would be current.

I already tried the app Mount /system (rw / ro). It didn't work with this too.

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General :: System File Read Only?

May 31, 2013

I am trying to revive white Pandigital using ADB commands to push files on the system's folder of the device then flashing them.

The computer sees the device, adb has root access, yet when trying to push files is gives me an error indication that the system/data/midc is a read only. tried adb remount over and over with no lick. Is there any other way to get to write on the system folder?

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General :: Rooting - Read Only File System

Nov 27, 2011

I get as far as being able to push su and busy box but get "failed, read file system only" or "directory doesn't exist".

model PMID700
Android version 2.3.1
kernel version 2.6.32.27
build number 20110918.170336
Firmware version 2.2

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General :: Unable To Chmod Read-only File System

Jun 8, 2012

i've rooted my vodafone 858 but it didn't install super user although i can type "su" command in adb shell. now i'm trying to delete files located in /mnt/asec (downloaded packages) due to low phone memory. so i tried to do it but when i do the command "rm" for files located in there it tells me permission denied so i entered super user mode and i tried "rm" it tells me "unable to chmod <path> read-only file system" so how can i get past the read only?

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General :: Xperia J Rooting - Read Only System File Error

Apr 11, 2013

I keep getting read only system file error when rooting xperia j. How to rewrite the file system ??

adb cannot push SU into my xperia ..

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General :: Impossible To Root Android Tablet - Read Only File System?

Dec 24, 2013

I have a android tablet and I have tried rooting it and I get things like "read only file system" and I looked into it and my /system is read only.. Rooting is putting .su in the xbin or bin inside of the /system. But my /system is read only so i can't root my tablet?

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Android :: Read And Write File At Same Time?

Oct 6, 2010

In my application, I use MediaPlayer to record audio to a file.Can I read the file at the same time?

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Android :: Write / Read Log Data Into File

Mar 13, 2010

how to read/write log data into a text file in android that file should be res folder.

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Android :: How To Create Text File And Read And Write From It?

Feb 24, 2010

I am very new to android and i have wrote an application that reads the Cell ID information , now i want to create a text file and store the information inside , i have googled this issue but i couldn't find a solution that really worked.

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Android : Read / Write To A Local XML File In Droid?

Nov 3, 2010

I am new to Android and relatively new to Java so please bear with me. I have an XML file stored in the res/xml that I am trying to write to. I know how to read it using XmlResourceParser, but I have not been able to find a way to write to that file locally. Could someone point me in the right direction please.

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Android :: ARM Directly Read / Write File On Sd Card I/O Without Cache

Nov 16, 2010

I need to directly read/write a file on sd card without cache. I can use "posix_fadvise" to achieve the purpose on Ubuntu I try NDK to make the function call, but it seems disabled on Android How can I do?

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Android :: Write / Read Access To SD Card In Manifest File

Mar 1, 2010

Is there a right associated with write/read access to the sd card that needs to be set in the manifest.xml file? I'm currently trying to write to the sd card using a standard FileOutputStream here:

FileOutputStream out = new FileOutputStream("/ sdcard/images/"+imageName);
bmp.compress(Bitmap.CompressFormat.JPEG, 90, out);

But it doesn't seem to be working. It just says the location isn't found, which can happen if there are no permissions to read/write to the location.

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General :: Can Mount Android File System Image?

Dec 10, 2013

So after a failed attempt to upgrade from CyanogenMod 10.1.3 to 10.2, I was unable to access /data or /sdcard because both systems were encrypted. I ended up having to factory reset my phone because it refused to co-operate or let me access my files. However, before I did that, I was able to run

Code:
adb shell "dd if=/dev/block/mmcblk0p2" > data.img
and

Code:
adb shell "dd if=/dev/block/mmcblk0p3" > sdcard.img

Which appears to have copied the raw partition images from the phone (at least, they're the right sizes).

According to my reading, Android (and, I'm inferring, CyanogenMod) encrypts filesystems using dm-crypt, with a AES-CBC ESSIV:SHA256 cipher, with the key being derived from the password using PBKDF2. Knowing the precious little I do about encrypted file systems, my guess is that if I configure the image in cryptsetup to create a drive mapping, I can mount the mapped drive and recover the data from the images.

According to /fstab.herring on my ahem, fresh, install of Android, the /data partition is in ext4 format whereas the /sdcard partition is vFAT. So, once I've gotten through the encryption on the partition images, they should mount normally, right?

I know that dm-crypt accepts plain, LUKS, LoopAES and TrueCrypt device formats. I'm inferring from the PBKDF2 extension that Android goes the LUKS route for encrypting. Is this conclusion correct?

Whether it's possible to decrypt a dumped android image? I'm really hoping that the cypher information is stored on the file system and not on some key file that I nuked in the factory reset. If it can, in theory, be decrypted, am I using the right tools to approach the matter? If so, I'll continue fiddling with cryptsetup and mount, but no sense in wasting time if it's an impossible task.

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HTC Incredible :: Read Ext3 On Formatted Sd Card?

Aug 23, 2010

If I format my card to ext3 will the phone be able to read it. I want to make a sym link to the internal storage on the sd card so all the apps will hopefully be able to use it. But fat32 doesnt support symbolic links...

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General :: How To Find List Of Available LOCALES (LANGUAGES) From ROM Image (file System)

Apr 11, 2012

How to find list of SYSTEM LOCALES (language list that we see in settings) from ROM file system image/file tree (assuming that /system can be mounted as folder)? Which files/folders have this information?

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Android : Way To Read System Log File?

Jul 22, 2010

I am trying to read system logs in my code to generate something like an error report. Similar to adb logcat, but in a programming way.

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Sprint HTC Hero :: Cannot Remove ADB - Read Only File System

Jul 23, 2010

For whatever reason this has been happening a lot to me in the past couple of days. I have never had this problem before. I can get it to work but it seems like I have to reset my phone every time in order to regain access. This is really frustrating because I have been altering the framework and resources files to theme.

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Android :: How To Change / SDCard To Be Not Read Only File System?

Aug 19, 2009

I am trying to copy an image to the emulator sd card by: $ adb push ~/Desktop/bullet_ball_ glass_red.png /sdcard /bullet_ball_glass_red.png But I get an error saying: failed to copy '/Users/n179911/Desktop /bullet_ ball_glass_red.png' to '/sdcard/bullet_ball_glass_ red.png': Read-only file system So I tried to go to adb shell to manual change the /sdcard to non read-only, but it still wont let me. $ adb shell # su # chmod 777 /sdcard Unable to chmod /sdcard: Read-only file system #.

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Read Image From External File?

Apr 13, 2013

I try to read picture from file that save in my computer.

the picture store in this path : C:Users
aorDesktopprojectmorehome.jpg
and I wrote this code in my application
File imgFile = new File(" C:Users
aorDesktopprojectmorehome.jpg");
if(imgFile.exists())
{
Bitmap myBitmap = BitmapFactory.decodeFile(imgFile.getAbsolutePath() );
ImageView myImage = (ImageView) findViewById(R.id.view1);
myImage.setVisibility(1);
myImage.setImageBitmap(myBitmap);
}

and when the program running it's not get inside to the if (these mean that imgFile.exists() is false)

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Motorola Droid :: Read Only File System - Trying To Push ADB Application

Jun 5, 2010

Rooted my Droid for the first time earlier today, and installed the NexBeast using the handy-dandy Mod Manager. So far everything has been great, but I'm having problems installing non-Market Apps. I'm trying to install a Live Wallpaper from
http://androidforums.com/all-things-root-droid/63554-coheed-cambria-live-wallpaper.html
But I keep receiving an error. Here is a copy from the CMD console:

[Quote]

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Android :: Write Contents Of Custom View To Large Image File On SD Card

Mar 12, 2010

I have a class that extends View. I override the onDraw method and allow the user to draw on the screen. I am at the point where I want to save this view as an image. I Can use buildDrawingCache and getDrawingCache to create a bitmap that I can write to the SD card. However, the image is not good quality at a large size, it has jagged edges. Since I have a View and I use Paths I can transform all by drawing to a bigger size. I just don't know how to make the Canvas bigger so when I call getDrawingCache it doesn't crop all the paths I am just transformed. What is happening is I transform all my paths but when I write the Bitmap to file I am only getting the "viewport" of the actual screen size. I want something much bigger.

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Android : How To Read A YUV420SP File Format Image?

Nov 4, 2010

I am using an application for obtaining the raw data from the image sensor on an Android device. The files I am getting out are in the YUV420SP format,and XnView does not supprt it. Does anyone knows which software I could use to get a proper image? (to convert it)

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Android :: How To Read Image File Stored In Internal Memory ?

Sep 27, 2010

In my android application I an storing an image file in internal memory using below code-
FileOutputStream fos = con.openFileOutput(fileName, con.MODE_PRIVATE);
fos.write(baf.toByteArray()); // baf - ByteArrayBuffer
fos.close();
Can anyone please help me to read this image file from internal display it in an activity?

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General :: Can't Read / Write SD Card

Oct 23, 2012

I did a backup using Titanium Backup and Go Backup and after wiping my Motorola Defy, tried to restore apps, contacts etc. The problems I encountered were:

1) Go Backup can't recognize backup directory on SD card for some reason.
2) Can't move apps to SD. An error occurs: "Move Application: Failed to move application. There is not enough storage left." Needless to say, I have more than enough storage.

This is was I encountered by far, although I believe these are just a small part of the symptoms for a single problem.
Maybe its because there are no permissions, or moving apps is impossible because of an existing app files on the SD card.

What is the actual cause for this? Or is there a tool to fix the permissions on the Defy?

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General :: Read And Write Camera Registers Via I2C?

Mar 25, 2014

how to pull and push registers to i2c devices? (Especially camera)

I'm using RootTools to get the list of the devices: "busybox find /sys/devices/i2c*/*/*/ -name name"

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General :: Read (and Write) Android Browser Bookmarks?

Dec 13, 2011

I've done this app Bookmarks Easy Import that import pc bookmarks (and folders too) in Android bookmarks but it required root because it read and write directly an Android database.

know if is possible read and write Android bookmarks from b4a or java application (via API?) in a non-rooted phone?

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General :: 64gb Micro SD Write Protected / Read-Only After Flashing ROM

Feb 10, 2014

I have a M919V Galaxy S4 which is compatible with both the i9505 roms and M919 (TMO) roms. I was on a i9505 TW rom and I decided to download a rom from the TMO section. When moving from a i9505 rom to a M919 rom, I had to flash the recovery corresponding to the model. So I downloaded the T-Mobile version of Philz Recovery, but I got a status 7 error. Then I downloaded the md5 version and flashed it via odin 3.07. It was successful. After flashing the recovery, I flashed Beanstalk rom for the t-mobile variant. Everything went fine until I tried to make a android of my current setup for Beanstalk. I kept getting errors. When I plug my phone in (with my sd card), and try to add or delete something, it say "remove write protection and try again". So I tried connecting my sd card to my sd card adapter. When I delete files from my adapter, the error message doesn't show up. BUT... after disconnecting and reconnecting it again, the files are back where they were. I tried reformatting it but nothing happens. It seems like my sd card is only read as write protected when connected to my phone but it has no idea which state it's in when connected to the sd card adapter.

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General :: How To Read / Write To Apps Shared Prefs Files Within App

Feb 19, 2012

I want to add a feature to my app so i can backup so that the user can backup certain shared_prefs files of other apps (located in data/data/package,name/shared_prefs). I dont want to modify them, just backup and overwrite.

My app has root privileges.Ive tried this a few times but i cant get it to work, im just getting a file not found error when uploading.Ive tried mounting data/ as read/write but that didnt work or i did it wrong.

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Android :: Write To System Directory Like /system/media/audio/alarms

Feb 9, 2009

Is it possible to write data or create folder in system directory like /system/media/audio/alarms. i.e other than our respective package.

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