New registration-required freeware from Adaptiva:
Adaptiva’s free Secure 10 is a complete automation solution for ConfigMgr admins to make the BIOS to UEFI conversion process simple and unattended. With Secure 10, migrations take much less time and no IT staff need to be on-site during the process. Now including support for new MBR2GPT.exe tool for retaining data while making the switch, as well as ConfigMgr 1610+ WinPE boot image pre-staging. Also new: two complete task sequences to save time integrating into your deployments! […] The open solution includes detailed documentation to help SCCM system administrators overcome the complexities of automating the conversion from:
* BIOS to UEFI – Secure 10 automates the conversion process from the legacy BIOS firmware typically used in Windows 7/8 systems to the more powerful Unified Extensible Firmware Interface (UEFI) technology. UEFI is required to enable key enterprise security features available in Windows 10.
* MBR to GPT – Secure 10 now includes support for the MBR2GPT.exe tool, which helps convert the disk layout on a PC from the legacy Master Boot Record (MBR) to GUID Partition Table (GPT). The new tool is the only Microsoft-supported tool to convert a production disk from MBR to GPT without data loss, greatly speeding in-place upgrades to Windows 10.
* WinPE Pre-staging – Microsoft recently introduced the capability to pre-stage a WinPE boot image to a partition from within an SCCM Task Sequence and have that image persist during the conversion from MBR to GPT. Secure 10 supports this capability for refresh/replace scenarios.