Several miscellaneous settings can be made from this window.
Hard drive optimizations: This can improve hard disk access speeds but may not work properly with certain drives, use with caution.
Security level: You can choose from several preconfigured security levels. Medium is the recommended level for normal, everyday use.
Precise RAM size: If the amount of detected RAM doesn't match what is installed in your machine, you can enter the correct amount as seen in the graphic.
Removable media automounting: This enables the SuperMount utility which offers automatic mounting and unmounting of removable media (floppy, CD-ROM, zip, etc.).
Enable Num Lock at startup: This enables Number Lock for the numeric keypad.