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Virus Removal Support

Detect and Disinfect

How to Clean an Infected Master Boot Record (MBR)

Normally, a Master Boot Record (MBR) can be disinfected with F-Secure Anti-Virus but in some cases (Windows 2000 and Windows XP) an active MBR is locked by the operating system and because of that F-Secure Anti-Virus cannot disinfect it. However, all viruses will be detected.

If you would like to disinfect this infected active MBR, you have the two following options:

  • You may use F-Prot for DOS to clean the infected MBR.
    Instructions for using F-Prot for DOS can be found here.
  • You may connect the infected hard drive to another computer and clean it there. When connecting the disk to another computer, MBR is not locked anymore (since it is not active) and it can be cleaned with F-Secure Anti-Virus.