[pchelpers] Re: virus?

Hi George,

Tuesday, October 26, 2004, 9:19:36 AM, you wrote:

GTC> Don't know how that would be accomplished in XP since it supposedly has
GTC> no connection with DOS and, so, no DOS Mode. I don't believe them when
GTC> they say that though. Just what exactly is "Prompt Mode" then? I notice
GTC> it still has cmd.com, a DOS program, and still uses many DOS-like commands.

In Windows 1.x, 2.x, 3.x, and 9x, Windows runs on top of DOS.

Windows NT, 2000, XP, and 2003 have a console-mode window that can be
opened, which also emulates DOS. This emulator supports both Windows
console-mode programs and DOS programs.

In Longhorn, they apparently plan to drop the DOS emulator (it's a
source of security holes, in addition to having its' roots in CP/M,
and thus at least 25 years old), so that only console-mode programs
will run. Note that it's difficult to tell the difference between DOS
programs and console-mode programs by watching them running. You can
usually tell by looking at the properties of the program's icon. A DOS
program will have tabs for Font, Memory, Screen, and Misc. A
console-mode program will have a tab for Font, but not for the others.
I suspect that they will probably continue to surrport batch files,
which are very convenient for some tasks.

--Scott.


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