Decompress-package the system. imgfile

Because of work, we need to decompress system. check the IMG file to see if there are any tools I have added. There is no way to check the information on the Internet. Later, I found the tool and tested it. However, there are many points worth attention between them. Write down and take a note;

1) You need a tool "simg2img", this tool if you download the 4.0 source code, after compilation is completed in the out/host/linux-x86/bin directory; with which simg2img can find it; (prerequisite: Source build/envsetup. SH );

2)./simg2img system. IMG system. IMG. ext4

3) Mount-o loop system. IMG. Ext/Media/USB (root permission required );

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Package the system. imgfile

1) Because I used system. IMG. when ext4 is mounted to the "/Media/USB/" directory, an error is always reported during packaging. I checked it online and the following parameter, but my parameter settings are enough!

Then I followed the method below, OK;

2) directly create a "Temp" folder in out/.../panda/and mount system. IMG. ext4 to the temp directory;

3)./make_ext4fs-L 256 m-s-a system system_new.img./temp/

= "OK; success; an error in step 1 may be related to the"-L 256 m "parameter in step 3; busy-not verified, because I previously wrote 161 m;

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Today, we found a simple packaging and decoding method of system. IMG, which won't go wrong (if you have the source code compiled successfully )! Because I have compiled the source code, and the output information already contains how to package the system. imgfile! Example: (make_ext4fs-S-l 268435456-a system. IMG System )! Let's take a look at make_ext4fs usage! That's it!

 

Note: The "-s" parameter of a pandaboard statement cannot be omitted! If the "-s" parameter is omitted, although the system. imgfile can be produced! But an error is reported when you use "simg2img system. IMG system. IMG. ext4!

Make_ext4fs-S-l 268435456-a system. IMG System