Hello, I want to know how can i create a mbr usb device to boot the tianocore

[9Bakabaka]

I want to create a usb device for the tianocore and then boot from the mbr. However, I found that i need to use the "DuetPkg" But i did not find it in the master branch. Did it have been dropped? Or i need to use another Pkg to create the usb device

[ajfish]

On Jul 2, 2024, at 8:20 AM, 9Bakabaka ***@***.***> wrote: I want to create a usb device for the tianocore and then boot from the mbr.

If you want to make a bootable removable media in UEFI you just need to put an UEFI application @ \EFI\BOOT\BOOT{machine type short-name}.EFI. So for x86_64 that would be: \EFI\BOOT\BOOTx64.EFI So you can have MBR with a FAT32 partition and \EFI\BOOT\BOOTx64.EFI is a file in the FAT32 file system. Note there is a typo: \EFIBOOTBOOT{machine type short-name}.EFI Should be: \EFI\BOOT\BOOT{machine type short-name}.EFI https://uefi.org/specs/UEFI/2.10/03_Boot_Manager.html#removable-media-boot-behavior When an OS installs it writes an UEFI variable to point to the location. There is a registry so vendors can own directories on the EFI System Partition. This prevents collisions when different OS venders install to the UEFI System Partition. https://uefi.org/registry

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However, I found that i need to use the "DuetPkg" But i did not find it in the master branch. Did it have been dropped? Or i need to use another Pkg to create the usb device — Reply to this email directly, view it on GitHub <#5847>, or unsubscribe <https://github.com/notifications/unsubscribe-auth/AD4ZCO4HVQYRGMNNQIFMSJLZKLANVAVCNFSM6AAAAABKHZFS2GVHI2DSMVQWIX3LMV43ERDJONRXK43TNFXW4OZWHA4TAMRUGU>. You are receiving this because you are subscribed to this thread.