Revert "Fix overflow"

This reverts commit 75d61a457440cd87d5a209c4e825b886b8b677cd.
Revert "Leave default behavior intact so it works with official images"

This reverts commit 976c63614b2d47bdcf600fb35ed7e4f7d7833301.
Revert "Android as bootable option"

This reverts commit ac951025662d918d9168cd3bb29a3c72b2abb587.
Revert "Bug fix and boot menu"

This reverts commit e8da0148b8c8927296db1ec65b28abe5b133f3b4.