A boot scan, also referred to as pre-boot scan or a shoe scan virus scanner is an advanced tool that is utilized by antimalware programs to identify and eliminate malware that might not be detected by traditional scanning tools. This type of scan can be configured to run on a regular basis or be invoked manually by the user when they believe that their computer is infected. Many antivirus programs allow users to choose the sensitivity level of the boot scan, as well as what actions to take when a threat is identified.
The reason the boot scan is so effective is because it allows the antimalware program detect files that are being used by the operating system. These files aren’t in a position to be deleted since they are constantly being accessed by the OS. They will return an Access Denied message when you try to delete them. The boot scan will find these files and permit antivirus software to delete them before the OS is able to start using them.
The length of a boot-scan can vary based upon a variety of factors, such as the speed of the scan and the number of system files that are being scrutinized. It also is contingent on whether the machine is being used during the scanning process. It is however common for this type scan to take much longer than a click for info typical antivirus scan due to the comprehensive nature of the process.