Historical field reports describe an OpenVMS V7.3 installation from image media entering mount verification and not recovering when the emulated drive identifies as an RRD42. Current 5.1.0 evidence includes a successful V7.3 installation from image media, but it does not reproduce this failure or compare RRD42 and RRD40 identities. If this exact symptom occurs, first preserve the console output and configuration. As a compatibility workaround, try the following advanced properties:

•vendor: DEC

•model_num: RRD40

This identification change resolved the historical cases; it is not a general diagnosis of every mount-verification failure or a current guarantee that one retry will succeed. Restore the original identity if it does not address the recorded symptom.