My colleague created a Rocky Linux 10 USB drive to replace Windows 11. However, he can't boot from it because it only seems to accept UEFI 'secure' boot options. He had disabled secure booting in the BIOS. Does anyone know how to address this issue?
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You can boot from USB or Disk using two modes: "Legacy aka BIOS" or "UEFI" which is the new standard. You can create a USB install drive which only supports being booted in Legacy mode, or one which only supports being booted using UEFI mode. Or even one supporting both.
I would suggest using UEFI mode (faster, easier to work with as it does not rely on writing some boot sectors on beginning of partition). You just need to ensure you created a UEFI bootable USB drive (you can do so with Rufus for example). Also in your BIOS/UEFI settings you have to ensure that "Secure boot" is disabled. No worries it's not really securing anything but instead it's more ensuring people don't use another operating system than the computer was sold with (it's just a feature to force people to stay on Microsoft Windows...).
If you have a more specifiy error message please share it here.
- Thank you for your inputs. I think my colleague might have done this already. We will see.Hari– Hari2025-11-26 16:42:19 +00:00Commented Nov 26 at 16:42
- Secure boot doesn’t prevent operating systems other than Windows from being installed; many Linux distributions can be installed with Secure boot enabled. Legacy mode is getting rare, most systems sold in the last five years no longer support it.Stephen Kitt– Stephen Kitt2025-11-28 20:12:07 +00:00Commented Nov 28 at 20:12