The Samsung SSD 960 EVO 250GB entry is the Legacy/MBR entry for your OS installation. That means it uses the Windows EFI boot loader. The Windows Boot Manager (Samsung SSD 960 EVO 250GB) entry is the UEFI booting entry for your OS installation. It is normal for the way I'm guessing your installed Windows for both of them to be in the boot order (hints in your post.) Appreciate if someone would explain the difference and should I have both listed in that order?įirst a few questions mainly for my information:ĭid you install Windows 10 (I assume?) from an Windows ISO on a USB flash drive?ĭid you configure any options in the UEFI/BIOS for installing Windows?ĭid you check or select the entry of your installation media in the boot order when you installed Windows?īoth of the entries in the boot order are valid, and work fine. Two of my options in the UEFI are 'Windows Boot Manager (Samsung SSD 960 EVO 250GB)' and 'Samsung SSD 960 EVO 250GB.' They are now 1st and 2nd in the boot order on my ASRock H270M Pro 4 mother board and I obviously boot the the SSD.

Uefi boot manager