Creating a build directory

Before building your first Yocto image, we need to create a build directory for it.

The build process, on a host system as outlined before, can take up to 1 hour and needs around 20 GB of hard drive space for a console-only image. A graphical image, such as core-image-sato, can take up to 4 hours for the build process and occupy around 50 GB of space.