

| In order for the changes to the Secure Boot configuration to take effect, the BIOS/EFI/UEFI configuration options must be saved. If the PC does not allow you to enable Secure Boot, try resetting the BIOS back to the factory. On some PCs, select Custom, and then load the Secure Boot keys that are built into the PC.

This option is usually in either the Security tab, the Boot tab, or the Authentication tab. The difference between shim圆4.efi and grub圆4.efi is that shim圆4 is the actual Microsoft signed binary that works with Secure Boot enabled while grub圆4 is the normal grub binary (Not signed).| Find the Secure Boot setting, and if possible, set it to Enabled. | If you enable secure boot after installing Ubuntu, the Ubuntu will not not boot if the shim圆4.efi does not exist. Go to Secure Boot-> Change Secure Boot to Enabled.

The following steps can vary based on your computer model: Alienware, Inspiron and Vostro. Tap the F2 key when the Dell logo appears to enter the BIOS.
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Microsoft Windows 10 (64-bit) View All (2) Category: Others 1 person had the same question. The boot settings for consumer notebook computers show everything right except on my end it does not let me enable the secure boot for Windows 11 upgrade.
