How to switch between external SD and built-in SD in mobile phone

Step 1. First you need to have root, then install re manager, open re manager, click mount read and write (The English version seems to be I\O) Then scroll down to find the system folder and open it.

Step 2. Find the etc folder in the system folder you just opened and open it.

Step 3. Find the file named vold.fstab in the etc folder and make a backup.

Step 4. After making the backup, you can directly long press the file and select the open method or the Open. (The English version is open with) and then select the text editor (the English version is text editor)

cm series , native 4.0, 4.1, lidroid4.0 modification tutorial

Step 1. After entering the file, you can see the red line parts of sdcard0 and sdcard1, and change sdcarJust change d0 to sdcard1 and sdcard1 to sdcard0. (Do not type too many spaces)

Step 2. After modification, it should look like the picture below.

Step 3. If it is cm7 or cm9, then the sdcard1 in the red line is emmc (if this is the case, please put emmc interchanges with another underlined part). Take this picture as an example. Only sdcard1 among sdcard1 1 needs to be interchanged. Regardless of whether it is 1 or auto after the space), no matter what it is, it can be interchanged at the corresponding position.

2.3 official or lidroid version modification tutorial

Step 1. The file opened according to the first 4 steps should look like this.

Step 2. Then swap the positions of the parts enclosed by the red box in the picture below.

Step 3. After modification, it should look like the picture below.

Step 4. Then save and exit, restart the phone.