You forgot the MSCDEX driver. In your AUTOEXEC.BAT , ensure this line exists:
Based on the search query "Rambo 1 cda install," you are likely looking for one of two things. "CDA" is a very popular Polish video streaming site, but in the context of "install," it is often a typo for (a database software used by mechanics). rambo 1 cda install
Why is this phrase so common? Because unlike later CD-ROM games, this early MS-DOS title originally shipped on 5.25-inch floppy disks with optional Red Book audio (CD-DA) support. If you have a copy that includes CD tracks, or if you are trying to mount a digital rip (like a BIN/CUE or ISO) that contains CD audio, the installation process is not as simple as dragging and dropping files. You forgot the MSCDEX driver