Translations:Handbook:SPARC/Blocks/Disks/135/en
From Gentoo Wiki
Next, to create the root partition, type n to create a new partition. Then type 1 to create the third partition, /dev/sda1. When prompted for the first sector, hit Enter. When prompted for the last sector, type -4G (or whatever space is required for non-root partitions). After completing these steps, typing p should display a partition table that looks similar to this: