Android Image File description

Android source code will generate three image files after compiling

SYSTEM.IMG->YAFFS2 Format

USERDATA.IMG->YAFFS2 Format

Ramdisk.img->cpio

The first two files can be mounted, but ubantu14.04 does not support the YAFFS2 format by default and requires compiling the kernel.

Software that resolves this format under Windows

Ramdisk.img

First of all

File ramdisk.img

Ramdisk.img:gzip compressed data, from Unix

See the files that were compressed for gzip, rename ramdisk.img to ramdisk.img.gz

MV Ramdisk.img ramdisk.img.gz

Then use file to look at the ramdisk.img, this time for

Ramdisk.img:ASCII Cpio Archive (SVR4 with no CRC)

Use Cpio to extract content from the Ramdisk.img

mkdir Temp CP Temp cpio-i-F. /ramdisk.img.gz

Just unzip it open.

After the actual compilation is completed in the Out folder

System.img->system Folder

Userdata.img->data Folder

Ramdisk.img-root Folder

Ramdisk.img equivalent to the root directory

System.img and userdata.img are mounted to RAMDisk's system and data folders, respectively.

Android Image File description