My replied earlier seemed to imply that following certain steps will allow SCCM, WinPE, and its OSD task sequences to image a system that booted in BIOS mode with UEFI and GPT in a single sequence. There are, however, some built-in processes in SCCM task sequences that make this hard or impossible without special tweaks
Please, read the information in this link to see why it does not work as you would hope, and how it could work with manual additions and changes to the imaging sequence
i did learn something new here - i found this link from an HP resource
Again, this is NOT a hardware or BIOS issue, but how OSD task sequences are implemented in SCCM