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
Free tool Partition Resizer can help convert disk gpt without losing data. Moreover, it can also resize, move, delete, convert, format, clone, backup, migrate os and more.
Free tool download: https://www.resize-c.com
MBR2GPT is only made for converting OS disk GPT by Windows, less than 3 partitions including the recovery partition that you can check the details in your Disk Management.
To convert a non-OS disk to GPT, use the free tool IM-Magic Partition Resizer, which can convert non-OS disk GPT without losing data.
See details: https://www.resize-c.com/howto/mbr2gp...