China DOS Union

As the subject says,
Lenovo Yangtian machine, 98 system, UCDOS 5.0 (genuine). Under MS-DOS, as soon as I run the UCDOS command, after the UCDOS interface appears, the cursor flashes and it hangs. Later, after entering the UCDOS command, even the UCDOS interface no longer appears, the cursor flashes and it hangs!??

I've reinstalled the system and UCDOS N times, reset the BIOS settings to default, and even cloned the system from a machine that runs normally, but it's still the same.

It runs normally on a Lenovo Kaitian S machine!

Can any of you experts explain this? Help me out?!!!

Isn't there UCDOS98 now?

Re qqzaqxsw:

　　To run UCDOS 5 under Windows 98, you need to modify the configuration of the startup batch file UCDOS.BAT or UP.BAT. However, some UCDOS 7 versions and most UCDOS98 versions have already been modified, so you can try looking for those.

　　If you must run UCDOS 5, you can modify it as follows:

　　In the "Properties -> Program" tab of UCDOS.BAT,
　　　　set "Command line" to: %COMSPEC% /K UCDOS
　　　　(the UCDOS above can also be changed to the actual path where UCDOS is located)
　　　　set "Working directory" to blank
　　　　check "Close on exit"
　　　　under "Advanced", do not check "Suggest MS-DOS mode as necessary"

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Note that UCDOS must be installed before it can run, especially the genuine version. This is because when starting up, the main UCDOS program KNL.COM reads the hardware information recorded when UCDOS was installed.

Also, it may be that some program in the UCDOS.BAT or UP.BAT batch file conflicts with the system. Please execute the startup step by step, use the process of elimination to find out which program is causing the problem, and then think of a way to solve it.