Setup is unable to locate Microsoft CD Extensions (MSCDEX) and is unable to proceed with the installation. Options: OK - Setup will exit Suggestion - Follow these tips, choose OK then run "SETUP.EXE" in your AdvanSys installation directory. First, make sure your CD-Rom is attached to your AdvanSys SCSI adapter and is powered on. Typically Setup is unable to detect MSCDEX.EXE because it is in the wrong place in your AUTOEXEC.BAT file. Setup makes a good attempt at putting the entry in the proper location, however if your AUTOEXEC.BAT is especially complex or uses Multi-Boot menus, the entry might have been put in the wrong place. Edit your AUTOEXEC.BAT to make sure that the MSCDEX.EXE entry is in the proper location and reboot your computer.