So I suspected that it was a problem with the system installation, and I reinstalled the system, but still had the same problem:
There is no way, I suspect it is a problem with Ubuntu, so I changed the Windows PE system (because I can’t find the Windows system for the time being): because the
Windows PE system does not have the sha256 tool, the "my256sha.exe" in the picture is made by referring to the online tutorial one.
Please help everyone, what’s going on here, shouldn’t the verification result be the same for the same file? If it is not the same, it should be that the file has been modified, but I have not modified the file. Could it be the computer hardware? solve.