What Is a Boot Sector Virus? Hidden Dangers and Full Removal Guide

What is a boot sector virus? This is one of the most dangerous types of computer viruses, as it hides in the boot sector of your hard drive or USB and activates as soon as your computer starts. Boot sector viruses are hard to detect and can prevent the system from booting or lead to total data loss. This article explains what a boot sector virus is, how it works, signs of infection, and the most effective ways to remove and prevent it. You’ll also learn about secure computing habits and which antivirus software supports boot sector scanning. Updated, this guide is suitable for both beginners and cybersecurity professionals.