My Rock Pi S has 1g SD Nand but I boot from SD card because I need more than 1g.
Now I want to use 1g SD nand for my free space.
How can I use it??
You can partition it first, create the file system, and then mount it. Use commands like the following:
sudo fdisk /dev/mmcblk1
sudo mkfs.ext4 /dev/mmcblk1p1
sudo mount /dev/mmcblk1p1 /mnt
Now I can use it.