Before you do anything else with the Pi, you should adjust the most important aspects of your Raspbian installation with Raspi-config. For example, you should increase the space available on your SD card, and you should set the right locale.
In this section, you’ll get to know the most important menu items in Raspi-config. You’ll learn about the rest of the menu items later in the book.
The Raspbian image limits your root file system to 2GB. In other words, no matter what the real capacity of your SD card is, you’ll be limited to 2GB. You could copy the image to a 16GB SD card, for example, but you still would only be able to use 2GB.
With the Expand Filesystem ...