A minimized kernel (LK) and an OEM customized version of ABOOT (Android BootLoader) will spin up to start the traditional Android boot process. This stage also loads the logo data and displays the boot-logo, before a full boot-image starts booting Linux and takes over control. The LK is responsible for verifying several partitions to make sure they are signed with a particular key. If it fails to verify a partition, it will not continue. ABOOT will check Android Verified Boot (AVB) as necessary and conditionally continue bootup. LK also listens to the device keys to load recovery or fastboot download. On MIUI LK images, Volume Up (+) loads recovery, while Volume Down (-) loads fastboot.