This article is from the Computer viruses FAQ, by David Harley D.Harley@icrf.icnet.uk, George Wenzel gwenzel@telusplanet.net and Bruce Burrell bpb@umich.edu with numerous contributions by others.
Many antivirus and disk repair utilities can make up a (usually
bootable) rescue disk for a specific system. This needs a certain
amount of care and maintenance, especially if you make up more than
one of these for a single PC with more than one utility. Make sure
you update *all* your rescue disks when you make a significant
change, and that you understand what a rescue disk does and how it
does it before you try to use it. Don't try to use a rescue disk
made up on one PC on another PC, unless you're very sure of what
you're doing: you may lose data.
 
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