Windows Loader | Status Unsupported Partition Table
The Windows loader (bootmgr or ntldr) or an intermediate bootloader detects a partition table format or disk layout it cannot interpret or safely boot from. This is most common when mixing MBR (Master Boot Record) and GPT (GUID Partition Table) styles, using unsupported filesystems, or having corrupt partition entries.
Migrate all modern Windows installations to UEFI/GPT. For existing BIOS/MBR systems, either remain on MBR or perform a backup+clean install when switching to UEFI. Report prepared by: Technical Support Engineering Date: [Current Date] Version: 1.0 windows loader status unsupported partition table
diskpart select disk 0 list partition If GPT header corrupt, use: The Windows loader (bootmgr or ntldr) or an