Fred,
Thank you for your useful information! There are my testing environments as below:
1) Platform: AMD Barzos series within UEFI BIOS.
2) PC-DR: DR-DOS 7.03, SERVICE CENTER 7, version:4.0.1723.14
Actually around 50% that it'll change extended memory testing Range and getting slowly. Is the Syndrome familiar with the known issue?
Thanks :-)