Environment Variable Problem?

[Guest]

My friend has an ex-company Dell Latitude laptop on which I am trying to
install Norton AntiVirus 2006. The installation keeps terminating in an
uncontrolled manner because it can't find drive M. The DVD-ROM drive from
which the installation is being carried out is drive D - M drive he thinks
was a network drive on his company's IT network.

NAV support haven't been able to come up with a resolution to the problem. I
think that the computer probably has an environment variable somewhere still
set to M: I've checked the environment variables listed in my My Computer -
Properties - Advanced - Environment Variables but can't find any that point
to M:

Are there any other environment variables and if so how can I check and/or
change their values?

 

[Pegasus]

My friend has an ex-company Dell Latitude laptop on which I am trying to
install Norton AntiVirus 2006. The installation keeps terminating in an
uncontrolled manner because it can't find drive M. The DVD-ROM drive from
which the installation is being carried out is drive D - M drive he thinks
was a network drive on his company's IT network.

NAV support haven't been able to come up with a resolution to the problem. I
think that the computer probably has an environment variable somewhere still
set to M: I've checked the environment variables listed in my My Computer -
Properties - Advanced - Environment Variables but can't find any that point
to M:

Are there any other environment variables and if so how can I check and/or
change their values?

There is probably a value in the registry that refers to drive M:.
Search the registry, then change it to D:.

As a work-around you could run this command from a Command
Prompt prior to the installation:

subst M: "%temp%: