Translations:Kernel/Gentoo Kernel Configuration Guide/12/en

The kernel includes a default configuration, which is presented to you the first time you run menuconfig on a particular set of sources. The defaults are generally broad and sensible, which means that the majority of users will only have to make a small number of changes to the base config. If you decide to disable an option that was enabled by default, make sure you have a relatively good understanding of exactly what that option does, and the consequences of disabling it.