How many mount points do I need to install linux system? What are their sizes?

Installing linux requires at least one mount point and one swap partition. The swap partition is generally twice the size of exchange memory, and the other partition mounts the root directory. Of course, according to the purpose of installing LINUX, the number and size of mount points need to be determined. If you just install the desktop, the above basic requirements can be met. It is recommended that the partition for mounting the root directory should not be less than 20G.