Requirements for EFI Boot from USB

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I'm maintaining a Debian Live USB Stick project.

The current Layout of the USB Stick (GPT) is quite simple (i did think):
* A Partition for Data (NTFS)
* A EFI System partition to boot from (FAT)

This works flawlessly on really a lot systems, including some ASRock Mainboards with AMD CPUs

However, recently i discovered some PCs at work that would not boot in EFI Mode. They use a Z390 Taichi Mainboard.

So i'm looking for a detailed information what ASRock Intel Mainboards need a USB Stick to look like in order to boot from it.

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worf Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 25 Jan 2019 Status: Offline Points: 3	Post Options Post Reply Quote worf Report Post Thanks(0) Quote Reply Topic: Requirements for EFI Boot from USB Posted: 25 Jan 2019 at 5:24pm
	I'm maintaining a Debian Live USB Stick project. The current Layout of the USB Stick (GPT) is quite simple (i did think): * A Partition for Data (NTFS) * A EFI System partition to boot from (FAT) This works flawlessly on really a lot systems, including some ASRock Mainboards with AMD CPUs However, recently i discovered some PCs at work that would not boot in EFI Mode. They use a Z390 Taichi Mainboard. So i'm looking for a detailed information what ASRock Intel Mainboards need a USB Stick to look like in order to boot from it.