After startup, it prompts that the UCDOS 6.0 input method is successfully loaded. Many built-in programs, such as DEMO, UCSHELL, all prompt that UCDOS 6.0 is not running.
In addition, the UCDOS 5/6 installation program will cause serious errors in the VirtualBox virtual machine. I don't know if only I have encountered this problem.
In addition, the UCDOS 5/6 installation program will cause serious errors in the VirtualBox virtual machine. I don't know if only I have encountered this problem.

