mightymo77 Posted October 12, 2019 Share Posted October 12, 2019 (edited) Is it possible to have a single bootable flash drive, with a Windows 10 installation that can boot both BIOS and UEFI. Perhaps a menu that appears first or something? Edited October 12, 2019 by mightymo77 Link to comment https://www.neowin.net/forum/topic/1388035-bios-uefi-bootable-flash-drive/ Share on other sites More sharing options...
Matthew S. Posted October 15, 2019 Share Posted October 15, 2019 by default the media creation tool does just that, there is no way for there to be a "boot menu" to choose between the two as both are enabled in different ways, UEFI looks for an EFI boot partition or in the case of removable media it looks for either a /boot/EFI folder or /EFI. BIOS booting looks for a bootable MBR. https://wiki.manjaro.org/index.php?title=Some_basics_of_MBR_v/s_GPT_and_BIOS_v/s_UEFI https://en.wikipedia.org/wiki/Unified_Extensible_Firmware_Interface goretsky and Brandon H 2 Share Link to comment https://www.neowin.net/forum/topic/1388035-bios-uefi-bootable-flash-drive/#findComment-598491341 Share on other sites More sharing options...
Matthew S. Posted October 16, 2019 Share Posted October 16, 2019 Also forgot to mention, for x86_32 and x86_64 bit systems MBR bootloaders are typically two or even three stages, first stage sets up all the 16bit stuff then hands off to 32bit and if running a 64bit OS 32bit hands off to 64bit. Link to comment https://www.neowin.net/forum/topic/1388035-bios-uefi-bootable-flash-drive/#findComment-598491644 Share on other sites More sharing options...
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