
## Unpack the images from super.img
- When you build AOSP, host tools are also built.
- Since the Super Image is a Sparse image, it must be converted to raw before unpacking.
- The file system varies according to ```BOARD_*_FILE_SYSTEM_TYPE```, and in the case of ext4, it can be mounted with ```mount -t ext4```.
- If it's <mark>erofs</mark>, a separate tool (e.g., erofsfuse) is required for mounting.

1. You need to convert the Sparse Image to a raw image.
```sh
{
    "title": "Sparse image to raw image"
}
---
$ file super.img
super.img: Android sparse image, version 1.0, Total of...
  
$ out/host/linux-x86/bin/simg2img super.img super_raw.img
  
$ file super_raw.img
super_raw.img: data
```
2. You need to extract the Super Image, which consists of multiple partitions.
```sh
{
    "title": "Extracting partition images from super"
}
---
$ out/host/linux-x86/bin/lpunpack super_raw.img extracted
$ ls extracted
oom_a.img   product_b.img   system_dlkm_a.img ...
```
3. The file system of the images will appear as ext4, and you must add the offset option for mounting.
```sh
{
    "title": "Loop mount with offset options"
}
---
$ mkdir vendor
$ sudo mount -t ext4 -o loop,ro,offset=0 vendor_a.img vendor
$ ls vendor
apex   bin   build.prop   etc ...
```