How can I free up space on my disks?

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I'm using IFC 6410 board and I'm trying to donwload ROS on my borad

But during the download, It showed an error message indicating that the disk capacity is insufficient.

Using commands such as sudo apt-get purge ros-* sudo apt-get remove ros-* tring to clear everything i have downloaded,

but still, the state is seen as the capacity is full.

I've attached a picture.

What should I do? To return to capacity by the first,