1. Expand Filesystem
Choosing this option will expand your installation to fill the rest of the SD card. You will need to reboot the Raspberry Pi to make this space available. Note there is no confirmation – selecting the option begins the partition expansion immediately.
- Start at the raspi-config main menu.
- Select Expand Filesystem. A message stating the Root partition has been resized. The filesystem will be enlarged upon next reboot will be displayed.
- Press Enter. The message will close.
When you reboot the Raspberry Pi, the file system will be automatically resized.