The error Unrecognized partition found, index 1 disk layout validation failed occurs while converting MBR to GPT. This article lists the reasons and fixes for this error.
Does anyone know if it's safe to run the Windows 10 "mbr2gpt.exe" tool on a (non-OS) disk in Server 2008 R2? If so, is the process reasonably quick? (This is an almost completely full, 2.0 TB disk.) ...