Some packs are optional and you can disable/enable them. In the following screen they have an [x] option before them. To switch their state enter item number and ENTER. When done press d and ENTER.
Select the packs you want to install: 1 => Base, The base files 2 => Unix Files, Files needed to run the server on Unix like systems 3 => [x] Docs, The documentation 4 => [x] Extras, Extras libraries, MUC, PubSub... 5 => [x] Derby Database, Derby database and JDBC driver 6 => [x] MySQL Database, MySQL JDBC driver (MySQL has to be installed separately) 7 => [x] PostgreSQL Database, PostgreSQL JDBC driver (PostgreSQL has to be installed separately) 8 => [x] SQL Server Database, SQL Server JDBC driver (SQL Server has to be installed separately) 9 => [ ] Sources, The server source files, tools and libraries sources are not included r => Redisplay menu d => Done Choose action: d press 1 to continue, 2 to quit, 3 to redisplay