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{{DISPLAYTITLE:How to install Windows NT 4.0 in QEMU}}
[[File:Winnt4.png|thumbnail|350px|Windows NT 4.]]
This page details how to install Windows NT 4.0 in QEMU. '''Windows NT 4.0''' is an operating system created by Microsoft, released on July 31, 1996. Support ended onin variousJuly dates2006 butfor the embeddedEmbedded version. ended in July 2006.
 
This article is for the x86 release of NT 4.0. There is also a [[Windows NT/MIPS|MIPS version of Windows NT]] which runs in QEMU.▼
==Running on CollabVM==
Windows NT 4.0 runs stable in QEMU but has a problem involving the mouse. Like [[Windows 95]] (and 9x/ME in general), the mouse does not position correctly (but still works). This is due to Windows NT 4 not having USB support. There exists a driver for Windows NT 4 which adds USB 1.1 support, which will fix this problem.
 
==Prerequisites==
If one chooses to not use an emulated tablet mouse, another problem is that occasionally the mouse will become very glitchy and move erratically, right and left clicking rapidly and making the computer completely unusable. This glitch tends to happen more on RTM-SP3 much more frequently, so it is recommended you install at least SP5 or above.
===QEMU===▼
You'll need [[QEMU/Installation|QEMU]] installed.
 
===Windows NT 4.0 ISO===
Another issue is that almost all modern programs do not run on this OS. Unlike Windows 9x and [[Windows 2000]], there is no KernelEx or mod for this OS to run modern programs, so you'll have to find old programs compatible with this OS.
You'll need a Windows NT 4.0 ISO for this guide. You can use a physical disc or download the [https://computernewb.com/isos/windows/Windows%20NT%204%20Workstation.iso Workstation ISO from here].
 
==Starting up==▼
Other than that, it works fine for a VM. CollabVM has ran Windows NT 4 before on Experimental and on Windows Server's 20th Anniversary.
===Installation===
Open a command window and create a disk image for NT 4 like so:
 
<pre>qemu-img create -f qcow2 winnt4.img 700M1G</pre>▼
▲There is also a [[Windows NT/MIPS|MIPS version of Windows NT]] which runs in QEMU.
 
'''1G''' can be replaced with however big you want the hard drive to be (with G standing for Gigabytes). There is an annoying quirk with the NT 4 setup where it won't let you format drives bigger than 4 GB due to a limitation in the setup. You'll need to partition the drives using something like gparted if you want more space.
 
When that's done, run the following command:▼
▲==Starting up==
▲===QEMU===
====Pre-installation====
Make a qcow2 image (or a raw image if you want) by typing
▲<pre>qemu-img create -f qcow2 winnt4.img 700M</pre>
 
<pre>qemu-system-i386 -hda winnt4.img -cdrom winnt4_iso_name.iso -bootdevice dVGA -cpu pentiumpentium3 -m 128 -vgaM cirruspc,hpet=off -netnetdev nicuser,modelid=pcnetlan -netdevice userpcnet,netdev=lan -rtc base=localtime -monitor stdio</pre>▼
'''700M''' can be replaced with however big you want the hard drive to be (with M standing for Megabytes). Windows NT 4 is not a space hog or resource intensive, being such an old OS - you can even make the disk space as low as 100M, but this is unrecommended. Windows NT 4 RTM-SP4 does not have support for FAT32 so if you want more than 2 gigabytes of space, install SP5 and above.
 
▲When that's done, run the following command:
 
The CPU is set to <code>pentium3</code> here to prevent a bug that occurs in the NT 4 setup on newer CPUs which causes a BSOD.
▲<pre>qemu-system-i386 -hda winnt4.img -cdrom winnt4_iso_name.iso -boot d -cpu pentium -m 128 -vga cirrus -net nic,model=pcnet -net user -localtime</pre>
 
We set the memory to 128 MB of RAM, but NT 4 can run on as little as 16 MB of RAM, but that's unrecommended if you want to be running any programs.
Windows NT 4 does work with KVM, but it is very unstable and crashy when it is used, so it's not recommended. This command does not require root or virtualization.
 
The installation is pretty self explanatory. In the setup, skip creating an emergency repair disk, and choose the defaults for the Ethernet adapter. Say yes to using DHCP.
We set the memory to 128 MB, but NT 4 can run with 64 MB if you want. Theoretically the maximum for Windows NT 4 is 4 GB of RAM, although it is really not a demanding OS by any means so 4 GB of RAM is overkill.
 
During the setup it will ask you to set your Display Properties, which requires a "test". This test is buggy on QEMU, and locks the OS up on some systems. Just hit OK and stick with 16 colors/640x480 for now.
VGA is set to Cirrus, but you can use -vga vmware if you can find a driver.
 
At this point, if all went well, there'll be an option to restart the PC. Windows will reboot and you should be taken to the login screen. To login, go to the QEMU console and type <code>sendkey ctrl-alt-delete</code>. The username will be "Administrator" followed by whatever password you set during the setup (if any.)
====After installation====
 
<!-- todo: document how to set up vbemp here -->
<pre>qemu-system-i386 -hda winnt4.img -boot c -cpu pentium -m 128 -vga cirrus -net nic,model=pcnet -net user -localtime</pre>
 
[[Category:Windows installation guides]]
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