Summary: Occasionally, when attempting to boot the system using a USB flash drive, it might fail with a BIOS prompt stating: "Invalid signature detected, please review the Secure Boot policy in the installation solution." This typically occurs when Secure Boot is enabled in the BIOS. Below, we outline the steps to disable Secure Boot in the BIOS to resolve this issue.
To begin, let's delve into the concept of Secure Boot: Secure Boot serves as a protective measure aimed at safeguarding the boot process of a computer from malicious software and unauthorized operating systems. Originally introduced by Microsoft, this technology has since become prevalent across a wide array of computers and mobile devices.
Secure Boot operates on the principle that during the booting process, every component undergoes verification via a digital signature. This verification ensures that each component originates from a trusted source and remains untampered with or replaced. Should any component fail this verification, Secure Boot halts the boot process, thereby thwarting the execution of malware and unauthorized operating systems during boot-up.
The advantages of Secure Boot are readily apparent: it delivers heightened security against malware and nefarious activities targeting the computer's boot process. Furthermore, Secure Boot fosters hardware and software compatibility by mandating that all boot components bear digital signatures from trusted publishers.
It's crucial to acknowledge that Secure Boot, despite its merits, comes with limitations. For instance, it might restrict users from installing custom operating systems or altering specific boot process components. Additionally, Secure Boot could be compromised if the digitally signed private key faces a breach or attack. Hence, users employing Secure Boot must safeguard the digitally signed private key and ensure their computer remains impervious to security vulnerabilities.
Solution:
1, press the switch button to switch off the computer, after switching off the computer, press the switch button to switch on the computer and quickly hit the keyboard Del to enter the BIOS.
2, After entering BIOS, select Security>Secure Boot>Set Secure Boot to Disabled>F10 to save and exit.
3, in the BIOS off Secure Boot can usually be normal from the U disk boot system.
