GitHub - ndeineko/grub2-bios-uefi-usb: Create a usb boot drive with support for legacy BIOS and 32/64bit UEFI in a single partition on Linux
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How to boot system from USB using GRUB — Szymon Krajewski — About software development, web technologies and self-improvement
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grub - Can I install grub2 on a flash drive to boot both BIOS and UEFI - Unix & Linux Stack Exchange
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How to boot system from USB using GRUB — Szymon Krajewski — About software development, web technologies and self-improvement
![boot - Installing GRUB on an USB stick: Keep having this "cannot find EFI directory" error - Ask Ubuntu boot - Installing GRUB on an USB stick: Keep having this "cannot find EFI directory" error - Ask Ubuntu](https://i.stack.imgur.com/0VUyN.png)