What is secure boot? What should I do if secure boot is gray and cannot be selected?

What does it mean to have a secure boot in bios settings? In some tutorials for converting pre-installed Win8/Win10 to Win7, it is also mentioned that secure boot must be turned off. Some users find that secure boot is grayed out and cannot be selected. What should they do? Let’s take a look at the details below.

The meaning of Secure Boot in BIOS settings

Secure Boot serves as a security mechanism to verify the integrity of firmware and software when the device boots to prevent the loading of malicious code. However, in some cases, users may encounter issues that require disabling Secure Boot, such as dual-boot installations or running legacy hardware. This guide will detail how to disable Secure Boot on different devices such as Windows, macOS, and Linux to help users troubleshoot boot and security issues. PHP editor Apple recommends that readers read the following content carefully to understand the methods and potential consequences of disabling Secure Boot to make an informed decision. The Chinese meaning of

Secure Boot is "Secure Boot".

What Secure Boot does

• Secure BOOT is designed to prevent malware intrusion.
• When the computer boot program is modified by a virus, it will issue a warning and refuse to start, thereby avoiding further losses.

Secure Boot Controversy

• Some people think that Secure Boot is Microsoft's modification of Linux to prevent computers from installing Windows operating systems.
• Objectively speaking, Microsoft’s original intention of designing Secure Boot may be to ensure system security, but it has also become a means for PC manufacturers to protect market monopolies and hinder competition.

Location of Secure Boot in UEFI BIOS

Secure Boot is a sub-rule of UEFI BIOS, located under the BOOT option of Legacy BIOS.

Using computers with pre-installed Windows 8 system

Microsoft stipulates that all manufacturers (i.e. OEM manufacturers) of pre-installed Win8 operating system must enable Secure Boot. Disabling the Secure Boot function (setting it to "Disabled") on a computer pre-installed with Win8 system will result in the inability to enter the system.

Secure Boot is gray and cannot be selected

Solution:

1. Press F2/Del and other keys to enter the BIOS settings.
2. Find "OS Optimized Defaults" and set it to "Disabled" or "Other OS".

   

   3. If it is still gray, Load Default Settings will restore the default settings.

   

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