
Set your boot method to UEFI and not legacy. I also set the SATA drive type to AHCI instead of RAID (unless this is an M.2 PCIe SSD?)

In your BIOS setup, enable Secure boot, and to do this (assuming Dell), you will need to have legacy boot devices disabled. Use the Media Creation Tool to get the latest installer, let it format your drive as needed.

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What I would do as it appears you are doing a full reinstall: early days on Win 10 on Dell I was doing this.

It really doesn't matter what partitioning the installation media is using.Īs others have stated, you could disable secure boot and leave it at that.
