Requirements When Using the Solaris 9 Installation CD

When you use the Solaris 9 Installation CD and the Solaris Web Start program to upgrade, you must have a slice on the disk that does not store files. The swap slice is preferred, but you can use any slice that is not located in any of the "upgradable" root slices that are listed in /etc/vfstab. The size of this slice must be at least 512 Mbytes.