From the Start menu,
select All
Programs | McAfee | On-Demand Scan.
All Local Drives should
be highlighted. Click Start to
begin the scan.
VirusScan will take between
5 minutes and several hours to scan your computer's hard drive(s), depending
on how much data is stored on your hard drive(s).
If your
computer has AdAware or some other anti-spyware software
installed, VirusScan will not scan the file. You'll see the
message File not scanned [The file is encrypted.].