The emulator creates two writeable images at startup that it deletes at
device power-off. The images are:
- A writable copy of the Android system image
/cache partition image
The emulator does not permit renaming the temporary system image or
persisting it at device power-off.
/cache partition image is initially empty, and is used by
the browser to cache downloaded web pages and images. The emulator provides an
-cache <file>, which specifies the name of the file at which
to persist the
/cache image at device power-off. If
does not exist, the emulator creates it as an empty file.
You can also disable the use of the cache partition by specifying the
-nocache option at startup.