MBR2GPT Error in Windows 10 v1809

[radhabshrestha]

I have Windows10 Version 1809 Legacy BIOS mode. I want to change to UEFI and I downloaded ADK and PE for version 1809 and created Bootable WINPE. Since I had more than 4 partitions and I had to delete all partitions including System Reserved Healthy (Primary Partition). Then only I could extend volume to C drive. When I run WINPE and run MBR2GPT /Convert I get error "Cannot find OS Partition(s) for disk 0". I even used reagentc /enable from my Laptop (the Dell Vostro 5468), I am getting "The Windows RE image was not found". I have only One C drive. How will I can change from Legacy BIOS mode to UEFI for my laptop?

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Document Details

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• ID: 8eaf0aab-4d02-82dd-007f-8457e648984d
• Version Independent ID: 4ea5614c-5e4d-537d-4b98-5ddead504359
• Content: Task sequence steps to manage BIOS to UEFI conversion - Configuration Manager
• Content Source: sccm/osd/deploy-use/task-sequence-steps-to-manage-bios-to-uefi-conversion.md
• Product: configuration-manager
• GitHub Login: @aczechowski
• Microsoft Alias: aaroncz

[aczechowski]

Thanks @radhabshrestha for taking the time to share this with the Configuration Manager documentation team. I’m sorry that you’re having problems, and I want to make sure it gets to the right people that can help. There are a couple of options available to provide the best level of support for this:

• Post on Configuration Manager forums. These are moderated by our community MVPs who are very experienced, knowledgeable, and helpful.
• Use Microsoft Support to search for the issue, or open a case with professional support.
• Contact your Microsoft Premier team, such as a Premier Field Engineer or Technical Account Manager.

I'm closing this issue as there's nothing actionable for docs at this time.