burn595 escribió:Buenas, voy a exponer mi problema a ver si a alguien le ha ocurrido algo similar. Hace un par de días que quiero reinstalar el sistema operativo, pero me he encontrado con el problema de que el ordenador no me arranca desde el cd ni desde usb. He estado mirando en internet y tengo deshabilitado la opcion secure boot. Y parece ser que la solución está en pasar de bios uefi a csm, pero no encuentro la opción o no sé, si la placa la trae.
UEFI
UEFI stands for Unified Extensible Firmware Interface, which is a specification of interfaces for modern BIOS firmware.
UEFI disk devices handling
Part of the UEFI specification is the disk device handling. The UEFI specification defines a "boot manager" that is in charge of loading the OS loader. Auto-detection of the boot loader relies on a standardized file path to the OS loader, depending on the actual architecture to boot (\EFI\BOOT\BOOT[architecture name].EFI, e.g. \EFI\BOOT\BOOTx64.EFI).
Compatibility Support Module (CSM)
The UEFI boot manager is able to load legacy BIOS environment using the Compatibility Support Module (CSM). This module is able to emulate legacy BIOS environment and allow booting legacy operating systems or new operating systems which were installed without UEFI boot loader.
Secure boot
Secure boot can secure the boot process by preventing the loading of drivers or OS loaders that are not signed with an acceptable digital signature. The BIOS maintains a list of platforms keys which are used to verify that the OS loader and drivers are secure. Secure boot is supported by Windows 8, Windows Server 2012, and selected Linux distributions. In order to use it, BIOS must have the public key which signed the OS. When using Secure boot, Compatibility Support Module (CSM) must be disabled.

