DOS ain't dead - EMS memory and XP

EMS memory and XP (Users)

posted by Arjay, 25.03.2013, 09:10

> > So I'm no further forward :-(
>
> Well, I seemed to have stumbled on a solution :-D
Good sounds like a workable workaround. According to this thread KB2707511 causes NTVDM crash there is hotfix #2732488 as follows:

"NTVDM.EXE has encountered a problem and needs to close" error message when you use 16-bit applications in Windows XP

I would say you are best off installing that instead and turning DEP back on.

> I couldn't see how this related to the NTVDM but, since I'd received the
> message, I restored the defaults and rebooted - who knows, anything is
> possible.
The why is related to "internal" software instructions in NTVDM which is what the security patches are patching or rather now preventing from executing. In short there are (were) various 16bit to 32bit API calls which were used by low level device drivers and also some DOS software during the transition away from DOS to Windows.

> This has been a bit of a saga - thanks to everyone who contributed. I still
> don't know why I got the problems that I did - as I say, I had changed DEP
> options many months ago so why the NTVDM message started appearing a week
> ago stumps me completely.
Further patching... I suspect they added in the DEP entry which makes sense.

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Complete thread:

EMS memory and XP - paulrichards, 19.03.2013, 00:43 (Users)
- EMS memory and XP - glennmcc, 19.03.2013, 03:13
  - EMS memory and XP - Arjay, 19.03.2013, 08:36
- EMS memory and XP - Arjay, 19.03.2013, 08:28
  - EMS memory and XP - paulrichards, 19.03.2013, 23:42
- EMS memory and XP - nidud, 19.03.2013, 11:22
  - EMS memory and XP - paulrichards, 19.03.2013, 23:48
    - EMS memory and XP - glennmcc, 20.03.2013, 01:01
      - EMS memory and XP - paulrichards, 20.03.2013, 01:39
        EMS memory and XP - nidud, 20.03.2013, 14:24
        EMS memory and XP - paulrichards, 21.03.2013, 00:46
        EMS memory and XP - nidud, 20.03.2013, 15:06
        EMS memory and XP - paulrichards, 21.03.2013, 00:48
        EMS memory and XP - paulrichards, 21.03.2013, 01:09
        EMS memory and XP - nidud, 21.03.2013, 12:33
        EMS memory and XP - paulrichards, 21.03.2013, 23:58
        EMS memory and XP - Arjay, 21.03.2013, 19:44
        EMS memory and XP - paulrichards, 21.03.2013, 23:55
        EMS memory and XP - Japheth, 22.03.2013, 10:15
        EMS memory and XP - glennmcc, 22.03.2013, 15:49
        EMS memory and XP - paulrichards, 22.03.2013, 22:32
        EMS memory and XP - paulrichards, 22.03.2013, 22:34
        EMS memory and XP - Arjay, 22.03.2013, 21:51
        EMS memory and XP - paulrichards, 22.03.2013, 22:36
        EMS memory and XP - paulrichards, 22.03.2013, 22:39
        EMS memory and XP - Arjay, 24.03.2013, 10:19
        EMS memory and XP - paulrichards, 24.03.2013, 12:55
        EMS memory and XP - paulrichards, 25.03.2013, 05:06
        EMS memory and XP - Arjay, 25.03.2013, 09:10
        EMS memory and XP - paulrichards, 25.03.2013, 09:47
        EMS memory and XP - Arjay, 23.03.2013, 09:32
        EMS memory and XP - paulrichards, 23.03.2013, 10:11
        EMS memory and XP - Arjay, 23.03.2013, 12:02
        EMS memory and XP - paulrichards, 24.03.2013, 03:51
        EMS memory and XP - DependancyWalker+DrWatson - Arjay, 24.03.2013, 10:08