Android:transfer error: Read-only file system

Question

I want to push a *.mp3 file in to my emulator, but it gives me these 2 errors:

 transfer error: Read-only file system
 Failed to push selection: Read-only file system

To resolve the problem, i have done these works, but still not working:

1-Using CMD to do this: c:\android-sdk\platform-tools\>abd remount

2-Add these 2 lines to the AndroidManifest.xml

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE"/>

3-Set the SDcard in emulator configuration as 1024 Mb

The thing that makes me wonderful is that the sdcard folder in file explorer has all the necessary permissions

Answer 1

Here is a solution I found in other site, which is the only way that worked in my case:

---

In a terminal (I work on Mac OS X) I wnt to sdk/platform-tools directory (to get access to the adb shell) then I typed the following commands:

./adb shell
su
mount -o rw,remount rootfs / 
chmod 777 /mnt/sdcard 

and then typed exit to exit su, and exit again to exit the adb shell.

Answer 2

@atisman's answer got me working. There are two small bits to add to his response though:

First, picky as it seems, you might need an extra '-' in the unix command line, depending on your local OS. The only way it would work for me was:

mount -o -rw,remount rootfs / 

The other item is to make sure you have actually defined the device's SD card with some size. I see you have, but I didn't, so just putting it out there in case anyone else has a similar issue.

Open AVD manager, click on the device you are using... click 'edit' and go to the "SD Card" area. Make sure if "Size" is clicked, that there is a number in the area next to it. Otherwise the SD card can't hold any info.