On Thu, 16 Apr 1998 16:12:14 -0700, you wrote:

>Help!  I have a 386 which I am setting up as my second system to use
>primarily for e-mail.  I have run McAfee Viruscan on the system and it
>tells me I have traces of MONKEY_B Virus in memory.  It instructs to turn
>off and start with a system-bootable disk.  No problem, I insert a system
>disk (containing IO.SYS, MSDOS.SYS, and COMMAND.COM) which I have determined
>to be virus free on another machine.  The system will boot to an "a:>"
>prompt but when I either try to switch to "C:" as the active drive or run
>"dir c:", I get an "invalid drive" message.
>
>What have I done wrong?  Do I need additional files on the boot disk?  How
>do I get this "MONKEY" off my back?
>
>TIA for any help coming down the line.

An addendum to what I posted in the other message.. This is one of the
indications of infection:

Accessing the C: drive after booting from a non-infected system
diskette results in the message: 

"Invalid drive specification" 

Diskette directories may also be corrupted.