Should I Disable Secure Boot?

When It Makes Sense

• Good fit: You are installing or booting an operating system that your PC’s firmware rejects because its bootloader is not signed with a trusted key. Many mainstream Linux distributions ship with a signed shim that works with Secure Boot, but specialized distros, custom kernels, older rescue discs, and experimental operating systems may not. If the installer fails specifically because Secure Boot blocks the bootloader, temporarily disabling it can let the installation proceed.
• Good fit: You are diagnosing a boot problem and need to rule out Secure Boot as the cause. Symptoms can include a PC that refuses to boot from a known-good USB drive, error messages about an untrusted image, or a hardware driver that no longer loads after an update. Disabling Secure Boot briefly can confirm whether the firmware’s signature check is the blocker, allowing you to look for a signed replacement once the issue is isolated.

When You Should Avoid It

• Warning sign: You use the device for sensitive work, online banking, or storing valuable personal data and have no specific reason to disable Secure Boot. Secure Boot is part of a chain of trust that helps prevent bootkits, rootkits, and low-level malware from loading before the operating system. Removing that layer increases the chance that a compromised bootloader or malicious kernel module could run undetected.
• Warning sign: The computer belongs to a school, business, or other managed environment, or is subject to compliance requirements. Many organizations require Secure Boot to be enabled as part of their endpoint-security baseline. Disabling it can violate policy, trigger security alerts, break conditional-access rules, and may affect support agreements. Check with the IT department or a qualified administrator before changing firmware settings on a managed device.

Pros and Cons

Pros

• Broader software and OS compatibility. Turning Secure Boot off removes the signature barrier, allowing unsigned bootloaders, alternative operating systems, legacy recovery tools, and certain hardware diagnostics to run. This is useful for hobbyists, developers testing custom kernels, and technicians who need to boot from older rescue media.
• Easier troubleshooting of boot-related failures. When a system refuses to boot and reports an invalid signature or unauthorized change, disabling Secure Boot can quickly show whether the firmware’s trust policy is responsible. It can also be necessary when using some third-party hardware that ships with unsigned option ROMs or firmware updates.

Cons

• Reduced protection against boot-level malware. Secure Boot checks that the bootloader, OS kernel, and certain drivers are signed by a trusted key before they execute. With it disabled, an attacker who gains physical or administrative access can more easily install a malicious bootloader or rootkit that loads before security software starts, potentially evading detection and persisting across reinstalls.
• Possible side effects and support complications. Disabling Secure Boot can interact unexpectedly with features such as BitLocker or other full-disk encryption, causing the system to demand a recovery key at the next boot. Some modern anti-cheat systems, enterprise security tools, and virtualization features also expect Secure Boot to be on. Re-enabling it later may require re-registering keys, resetting the firmware, or reconfiguring the operating system.

Decision Checklist

• Is Secure Boot actually blocking what you want to do? Look up the exact error message or boot failure. Many Linux distributions and Windows tools work fine with Secure Boot enabled, so disabling it may be unnecessary. Try a signed alternative or the vendor’s recommended workaround first.
• Do you understand how to re-enable Secure Boot and recover from side effects? If you proceed, know how to enter the UEFI firmware settings, locate the Secure Boot toggle, and have any BitLocker or encryption recovery keys ready. Consider recording the current settings before making changes.
• Are you allowed to change this setting, and is the trade-off worth it? On managed or regulated devices, disabling Secure Boot can have policy or compliance consequences. For personal devices, weigh whether a one-time installation or troubleshooting step justifies a lasting reduction in boot security.

Alternatives to Consider

Before you disable Secure Boot, investigate lower-risk options. Many Linux distributions provide a signed shim that registers a Machine Owner Key, letting you keep Secure Boot enabled while still installing the OS. You can also enroll your own custom signing keys into the UEFI firmware if you are comfortable with key management. For occasional use of another operating system, running it inside a virtual machine or using Windows Subsystem for Linux often avoids firmware changes entirely. If you must disable Secure Boot to diagnose a problem, plan to re-enable it as soon as the test is complete, and keep full-disk-encryption recovery keys nearby.

Final Recommendation

Keep Secure Boot enabled unless you have a clear, documented reason to turn it off. The most defensible reasons are installing an unsigned operating system that has no signed alternative, or temporarily troubleshooting a boot failure. Treat disabling Secure Boot as a reversible, time-limited change rather than a permanent setting. After the installation or test is done, re-enable it. If the device is owned by an organization, subject to compliance rules, or stores critical data, consult the device manufacturer’s documentation, the operating-system vendor’s guidance, or a qualified IT professional before changing firmware security settings.