[Excerpt] Android software is installed on the memory card [compatibility mode]

In the Windows Mobile system, you can choose to install the software on the mobile phone memory or memory card during software installation. In the Android system, you can only install the software in the mobile phone memory, it makes the memory of a small mobile phone appear easy. If you are also a mobile phone software mad man, and you like to try a variety of novel and interesting software, facing the increasingly small amount of mobile phone memory space, you have to kill the installed software. Are you still struggling with installation and uninstallation? Follow me! Let's expand and scale the Android system together so that "Robots" can also be "Big Belly", saving you from the worries of insufficient storage space.

Knowledge: memory is divided into random memory (RAM) and read-only memory (ROM. A mobile phone Rom is equivalent to a hard disk on a PC. It is used to store mobile phone operating systems and software, also known as Flash ROM, and determines the size of mobile phone storage space. Mobile phone Ram is equivalent to PC memory, and its size determines the running speed of the mobile phone.

We often say that it takes only two steps to install the software on the SD card in three steps to install the elephant in the refrigerator.

Division software requires ext3

First, we need to partition the mobile phone SD card by a FAT32 partition and an ext3 partition. The FAT32 partition is used to normally store images, music, videos, and other materials, in Linux format, ext3 partitions are used to expand the partitions used to install software. Taking the author's 2 gb sd card as an example, the FAT32 partition is 1.35 GB, And the ext3 partition is 494 MB.

Log on to the mobile connections website (Address: http://www.shudoo.com/bzsoft) and download and install acronis disk ctor Suite software. Mount the mobile phone SD card into the card reader, connect to the computer, and then run the acronis disk ctor Suite software.

1. FAT32 Partition

Find the disk partition that represents the SD card, right-click it, and select the "delete" command to delete the existing partition. When a partition is not allocated, right-click it and select "create partition". In the displayed dialog box, select FAT32 as the file system and create it as the "primary partition ", set the partition size to 1.35 GB and click "OK.

2. ext3 Partition

Right-click the remaining 494mb partitions and select "create partition". In the displayed dialog box, select ext3 as the "primary partition ", set the partition size to 494 MB and click "OK.

3. Confirm the partition

After the preceding partition settings are complete, the software only records the partition operation and does not partition on the SD card. Click "Submit" in the software toolbar to confirm the partition operation. If the message "Operation completed successfully" is displayed, the partition is successful.

Big Shift software shelter SD card

After the storage card partition is complete, we only need to transfer the default software installation directory/data/APP to the ext3 partition of the SD card, and then use the ln command to create a soft link, the system automatically installs the software on the SD card to save the memory space of the mobile phone.

Load the memory card back to the mobile phone and restart the system to identify the ext3 partition. Run the following command on your phone to verify that the system recognizes the ext3 partition:

SU (Advanced permission authorization is prompted, and "always agree" is selected ")
Busybox DF-H
If/dev/block/mmcblk0p2 is displayed in the list, the system has successfully recognized the ext3 partition. Enter the following command in sequence to transfer the/data/APP directory to the ext3 partition of the SD card:
CP-A/data/APP/system/SD/(copy the/data/APP directory to/system/SD)
Rm-r/data/APP (delete/data/APP directory)
Ln-S/system/SD/APP/data/APP (create a soft link)
Reboot (restart mobile phone)

 

Enter commands on the Super Terminal and link the software on the SD

After the restart, all the software installed on the mobile phone will be transferred to the SD card to see if the available space of your mobile phone has increased. Installing the software in the future is also directly installed on the SD card, so there is no need to worry about insufficient space. In addition, there is another benefit. After the Rom is refreshed, the previously installed software has not been cleared, it is also saved on the SD card. You can easily restore it by entering the following command, which is very convenient and practical.

SU (obtain advanced permissions)
CD/data (enter the/Data Directory)
CP-a app/system/SD/APP (copy the content in the app directory to the/system/SD/APP directory)
Rm-r app (delete app directory)
Ln-S/system/SD/APP/data/APP (create a soft link)
Reboot (restart)

Resizing experience

No software is installed after the Rom is refreshed. The available space for the mobile phone is 87 MB. After several software are installed, the available space is reduced to 73 MB. After the Software Directory is transferred to the SD card, the available space becomes 80 Mb. Some users may wonder why they have not recovered to 87mb? This is because we only move the software to the SD card, and the cached data of the software will still occupy the phone memory, so the phone memory will be lowered. Of course, the cache data of the software can also be moved to the SD card, but this will slow down the running speed of the software, so we do not recommend that you use it.
Note:

1. After the software is moved to the SD card, some of the original desktop plug-ins will not be displayed normally. After the software is deleted, add it to the desktop again.

After the mobile software is installed, You need to reload the desktop plug-in.

2. The ext3 partition of the SD card can be regarded as a part of the mobile phone hardware. After the SD card is removed, the installed software will not run. Insert the SD card and restart your mobile phone.