Now type in 'con gpt' and you will get a success message that the disk has been changed to GPT. if your drive 0 does not have it, (or if it does) and you don't want to save any data, type in 'sel dis 0' and then 'clean' In Disk part, type in 'lis dis' (you should see Drive 0 as the drive you want to install onto, and Drive 1 as your USB boot drive)Īlso you will see a * in the column for GPT disk or not. Now, boot to your USB drive using the UEFI method, when you get to the first setup screen, choose that you want to repair your computer. 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. 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.
