The following are suggested sub-tree sizes for a full system install. The numbers include enough extra space to permit you to run a typical home system that is connected to the internet: SYSTEM / /usr /var /usr/X11R6 alpha 50M 433M 20M 120MB (no Xserver) amiga 27M 173M 20M 64M arc 47M 268M 20M 60M hp300 26M 120M 20M 50M i386 30M 172M 20M 85M mac68k 26M 172M 20M (no X11) mvme68k 26M 173M 20M (no X11) pmax 44M 267M 20M 60M sparc 35M 194M 20M 50M When you are in the disklabel editor, you may choose to make your entire system have just an 'a' and 'b' partition. The 'a' partition you set up in disklabel will become your root partition, which should be the sum of all the 3 main values above (/, /usr, and /var) plus some space for /tmp. The 'b' partition you set up automatically becomes your system swap partition -- we recommend a minimum of 32MB but if you have disk to spare make it at least 64MB. However, we recommend you use many seperate partitions so that users cannot fill up your important partitions as easily, thus causing nasty denial of service problems. If you are extra cautious, you will make at least the following seperate partitions: / swap /usr /var /tmp /var/tmp /home. You can place /usr/local and /usr/X11R6 inside /usr or you can simply create their spaces as symbolic links or as seperate partitions.