: Navigate to the sxsi directory and run bootset.x to install the bootloader into the machine's SRAM (typically at address ED0100 ).
SxSI isn't just a driver; it's a miracle worker for the older SASI-based X68K models (like the Expert or Pro). On a modern Windows 8 x64 machine, tools like DiskExplorer sxsi x64 windows 8 link
Once you have obtained a legitimate and downloaded the file, follow this installation guide: : Navigate to the sxsi directory and run bootset