Virus's can get real nasty and make your Operating System unbootable, in such cases the user is left with only two choices either to format and re-install the operating system or to use a bootable anti-virus cleaner for removing the virus infection, obviously the second option is the preferred one, almost all major anti-virus companies provide bootable rescue disk's for removal of such stubborn virus infections, Kaspersky Rescue Disk is one of the best bootable anti-virus rescue disk out there with an fully functional option to download latest anti-virus definitions updates from internet, the free rescue disk GUI is similar to Kaspersky Anti-Virus 2009 allowing users to remove virus's and malware's via a familiar interface without booting into Windows.

If you don't have CD/DVD booting functionality or would prefer USB disk as the bootable medium, here is a simple step-by-step guide for creating bootable Kaspersky Rescue USB Disk: