I've created a UBCD4Win + unattended 2003 R2 installation DVD. After booting the DVD, a partitioning script and winnt32.exe will be executed for fully automated 2003 R2 installation with auto partitioning. Installation went OK. The problem is when I try to install adminpak, it asks for a MS 2003 Server installation Disc. If I proceed without /unattended: option and do normal attended installation. This problem will not show. Anyone knows why or have the same experience? Here are the winnt32 commands I tried: d:\w2k3r2\i386\winnt32.exe /syspart:c: /tempdrive:c /unattend:"d:\unattended.txt" /makelocalsource /noreboot d:\w2k3r2\i386\winnt32.exe /syspart:c: /tempdrive:c /makelocalsource /noreboot