Category Archives: NT

NT 3.1 SMP

Posted on January 12, 2016 by Michal Necasek

Generic x86 multiprocessing, Summer 1994 edition. There’s not much to say: Yep, that’s NT 3.1 running in a VM, and it sees two processors. Remember, you saw it here first!

Posted in Intel, NT, SMP | 68 Comments

Book Review: Inside Windows NT

Posted on January 3, 2015 by Michal Necasek

A Few Decades Late Book Reviews Inside Windows NT, by Helen Custer Microsoft Press, 1992; 385 pages, ISBN 1-55615-481-X; $24.95 Inside Windows NT was one of the earliest published books about Windows NT, predating the actual July 1993 release of Windows NT … Continue reading →

Posted in Books, NT | 6 Comments

Windows 8.1 Startup Bugcheck 0xC4

Posted on November 30, 2014 by Michal Necasek

On some systems, both physical and virtual, 64-bit Windows 8.1 as well as Server 2012 R2 consistently crashes with error code (bug check) 0xC4; 64-bit Windows 8 may run on these same systems without trouble. On physical systems, the BSOD … Continue reading →

Posted in Bugs, Microsoft, NT, VirtualBox | 15 Comments

NT Video Miniport for VirtualBox, With Source Code

Posted on August 1, 2014 by Michal Necasek

Note: See also an updated version. Upon reader request, the OS/2 Museum is publishing the source code to the NT video miniport driver for VirtualBox. To recap, this is a NT video miniport which allows 32-bit NT versions to use high-resolution graphics … Continue reading →

Posted in Graphics, NT, Source code, VirtualBox | 48 Comments

Installing Oct ’91 NT from CD

Posted on December 15, 2013 by Michal Necasek

With VirtualBox 4.3, it is possible to install the oldest known pre-release of Windows NT directly from CD, the way Microsoft intended. This is the Fall ’91 Comdex preview which only supported the x86 architecture and a very short list … Continue reading →

Posted in Microsoft, NT, SCSI | 35 Comments

Twenty Years Ago Today…

Posted on July 24, 2013 by Michal Necasek

On July 24th 1993, Microsoft finalized the first release of Windows NT, labeled version 3.1 “to avoid confusion”. This was a big day for Microsoft, although the practical impact on the computer industry was not particularly big, at least not … Continue reading →

Posted in Microsoft, NT | 6 Comments

Windows NT BSOD Aclock Port

Posted on November 7, 2012 by tenox

Do you remember the famous Windows NT Blue Screen Of Death? For years it was a source of jokes and bad reputation of Windows reliability. There even was a Blue Screen Saver! Today we fortunately see much less of it, but it … Continue reading →

Posted in 386, Development, NT, VGA, Windows, x86 | 10 Comments

Why Windows NT from October 1992 refuses to install on modern CPUs

Posted on October 12, 2012 by Michal Necasek

Attempting to install the October 1992 pre-release on any CPU less than about 20 years old is likely to result in the following error message: This is similar to the behavior of the official Windows NT 3.1 and 3.5 releases, … Continue reading →

Posted in Intel, NT | 15 Comments

NT video miniport HD

Posted on March 9, 2012 by Michal Necasek

The video miniport driver for VirtualBox has been updated. The miniport now supports a much broader range of resolutions, up to 1920×1200. Color depths of 32, 24, 16, 15, and 8 bits per pixel are supported for all resolutions, although … Continue reading →

Posted in NT, VirtualBox | 23 Comments

Simple Windows NT video miniport for VirtualBox

Posted on December 18, 2011 by Michal Necasek

A few months ago, I developed a trivial video miniport for use in Windows NT virtual machines. The primary goal was to improve display speed and get past the 800×600, 16 color display mode which is the maximum Windows NT … Continue reading →

Posted in NT, VirtualBox | 26 Comments