[DevoxxFR2014] or
ls /sys/firmware/efi # exists → UEFI
> **Security Note**: UEFI Secure Boot prevents unsigned kernels from loading—a critical defense in enterprise environments.
### 1.2 Bootloader: GRUB2
ls /sys/firmware/efi # exists → UEFI
> **Security Note**: UEFI Secure Boot prevents unsigned kernels from loading—a critical defense in enterprise environments.
### 1.2 Bootloader: GRUB2