Dear PC99W users, The CaDD Myarc HFDC, is not recomended for use because it is buggy as explained in the user manual. The IDE drive however has no reported issues, and is the CaDD recomended HDD. The actual file names that PC99W uses for the HFDC are virtual_drive5.bin, and virtual_drive6.bin. Virtual drives 1-4 are the HFDC floppy drives, and are not compatible with the CaDD Myarc FDC. These file names are fixed.