Very low drive space remained after kernel compilation
After compiling my kernel I have left with very low space in several hundred MBs. Each time when I start my system it prompts me with the same message. I don't know how to reduce the space because majority of space is taken by /usr directory. (screenshot attached)
So I was thinking of merging my my sda6 with other drive (maybe with sda4). Is it possible ?
Or can I mount sda4 by default every time u boot ?
With this situation shoud I continue installing my compiled kernel ? Is it safe ?