2 Fixes for MBR2GPT Disk Layout Validation Failed 

MBR2GPT may report disk layout validation failed for disk 0 or disk 1 when you use it to convert non-os disk when the OS disk contains logical drives, more than 3 drives, or when your computer is earlier than Windows 10 1703 etc.
mbr2gpt /validate /disk:0 /allowFullOS
mbr2gpt /convert /disk:0 /allowFullOS
mbr2gpt /convert /disk:1 /allowFullOS
mbr2gpt /convert /disk:ID /allowFullOS
mbr2gpt.exe /validate /disk:0
mbr2gpt.exe /convert /disk:0
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