Difference between revisions of "QEMU"

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Qemu is a free x86 Emulator/Virtual Machine for Linux and Windows.
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[http://www.qemu.org/ QEMU] is a free x86 emulator for Linux and Windows. A preloaded QEMU image of ReactOS can be found [http://www.reactos.org/download here].
  
If you are looking for something faster, you can try the [http://bellard.org/qemu/kqemu-doc.html Qemu Accelerator Module] or [[VMware]].
+
If you are looking for a faster virtual machine, give [[VirtualBox]] or [[VMware]] a try.
  
== Grabbing debug messages ==
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== Installing ReactOS on QEMU ==
 +
 
 +
* Create a drive image, on which ReactOS will be installed, by typing:
 +
 
 +
qemu-img create ReactOS.img 1000M
 +
 
 +
''1000M'' stands for 1000 megabytes- that shall be enough. It shall be greater, if you plan to install some application to try under ReactOS.
 +
 
 +
* In *nix only, type:
 +
 
 +
sudo umount /dev/shm
 +
sudo mount -t tmpfs -o size=144m none /dev/shm
 +
 
 +
* Type:
 +
 
 +
qemu -L . -m 256 -cdrom ReactOS.iso -hda ReactOS.img -boot d -localtime -serial file:ReactOS.log
 +
 
 +
''-m 256'' stand for 256 MB RAM
 +
''-boot d'' instructs QEMU to boot from the CD-ROM. Without ''-boot d'' it will boot from the hard drive (Reactos.img).
 +
 
 +
''ReactOS.iso'' is the image of the '''installation''' CD, which can be downloaded from http://www.reactos.org/en/download.html
 +
 
 +
When reinstalling ReactOS, perform steps 2 (if necessary) and 3 only.
 +
 
 +
If you want to copy some files to ReactOS, you could create an CD-ROM image and mount it on QEMU.
 +
You can run QEMU this way:
 +
 
 +
qemu -L . -m 256 -cdrom Applications.iso -hda ReactOS.img -localtime -serial file:ReactOS.log
 +
 
 +
=== Setting up Sound ===
 +
 
 +
==== Using AC97 emulation (QEMU 0.10.1 or later) ====
 +
 
 +
* Set emulation to AC97 (-soundhw ac97)
 +
* Install the drivers using Downloader! (You need to reboot twice)
  
By default, ReactOS debug messages are sent to the serial port (COM1).
+
===== Known Issues =====
For grabbing that output, you need Qemu version 0.6.1 or later, in which you can specify the -serial option.
 
  
Your command line could look like this:
+
* Audio sounds glitch when changing the audio stream with a high sample rate to a stream with low sample rate
<pre>qemu -L . -hda C:\qemu\ReactOS.vmdk -cdrom C:\RosBE\Source\Reactos.iso -serial CON</pre>
 
  
Be sure to use valid paths (depending on your configuration an program paths).
+
==== Using ES1370MP emulation ====
  
Valid arguments to -serial include filenames, pipes, COM Ports and [http://bellard.org/qemu/qemu-doc.html#SEC10 more].
+
* Set emulation to ES1370 (-soundhw es1370)
Those arguments could be:
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* Install drivers from here [http://rapidshare.com/files/236843299/windows2.zip.html]
<pre>
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* Create a file named import.reg with the following contents
-serial file:"C:\roslog.txt"
 
-serial pipe:"\\pipe1\"
 
-serial COM4
 
</pre>
 
  
=== Using com0com with QEMU ===
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<syntaxhighlight lang="reg">
com0com is a free utility to create virtual serial port pairs which can be used to capture the debug output of ReactOS and direct it to a terminal program such as TeraTerm.
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REGEDIT4
  
From Carlos Bramini (Carlo Bramix):
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[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E96C-E325-11CE-BFC1-08002BE10318}\0000\Settings]
 +
"WaveVol_Left"=dword:00040000
 +
"WaveVol_Right"=dword:00040000
 +
"WaveLineSM"=dword:00000000
 +
"WaveWaveInSM_Left"=dword:01010101
 +
"WaveWaveInSM_Right"=dword:00000000
 +
"CDVol_Left"=dword:fffffff6
 +
"CDVol_Right"=dword:fffffff6
 +
"CDLineSM"=dword:00000000
 +
"CDWaveInSM_Left"=dword:00000000
 +
"CDWaveInSM_Right"=dword:00000000
 +
"LineInVol_Left"=dword:fffffff6
 +
"LineInVol_Right"=dword:fffffff6
 +
"LineLineSM"=dword:01000001
 +
"LineWaveInSM_Left"=dword:00000000
 +
"LineWaveInSM_Right"=dword:00000000
 +
"MicBoost"=dword:00000001
 +
"MicVol"=dword:fffffff6
 +
"MicLineMute"=dword:00000001
 +
"MicWaveInSM_Left"=dword:00000000
 +
"MicWaveInSM_Right"=dword:00000000
 +
"AuxVol_Left"=dword:fffffff6
 +
"AuxVol_Right"=dword:fffffff6
 +
"AuxLineSM"=dword:00000000
 +
"AuxWaveInSM_Left"=dword:00000000
 +
"AuxWaveInSM_Right"=dword:00000000
 +
"PhoneVol"=dword:fffffff6
 +
"PhoneMute"=dword:00000000
 +
"PhoneWaveInSM_Left"=dword:00000000
 +
"PhoneWaveInSM_Right"=dword:00000000
 +
"LineOutVol_Left"=dword:fff9f203
 +
"LineOutVol_Right"=dword:fff9f203
 +
"LineOutMute"=dword:00000000
 +
</syntaxhighlight>
  
1) Get QEMU. If you have not it yet, my suggestion is to download Qemu Manager, it already includes a recent build of QEMU and it it helps you to configure virtual machines.
+
* Import those settings by starting cmd.exe and regedit import.reg
 +
* Reboot
  
2) Get com0com and install it.
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If you don't hear any sound in '''QEMU 0.10.x''', you'll have to set QEMU_AUDIO_DRV=fmod (available: dsound; fmod; sdl; none ; wav (dump to file) – see QEMU documentation for information.
Next, run the com0com command shell and type
 
  
<pre>install PortName=COM4 PortName=COM5</pre>
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===== Known Issues =====
  
and it will create two virtual ports connected together.
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After starting first audio stream, you need to leave QEMU and re-enter (seems to be a QEMU bug)
If you prefer different ports, just change the com names; however you can get a simple help by typing "help" to the shell prompt.
 
  
3) Create a virtual machine for running ReactOS under QEMU.
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=== Setting up network ===
Be sure to select one of the newly created ports by adding this option to the command line of QEMU:
 
  
<pre>-serial COM4</pre>
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Networking should work by itself using the '-net nic,model=ne2k_pci' and '-net user' switches with QEMU.
  
<b>WARNING:</b> you must write "COM4" with capital letters and not "com4" otherwise QEMU won't use serial port at all!!!
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== Using ReactOS [[LiveCD]] on QEMU ==
  
4) Open a terminal programme.
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# Move to the previously created directory with the <code>cd</code> command.
You can use Teraterm or HyperTerminal.
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# There, type in the following command:
Start a new connection and select "COM5" as communication port. (If COM5 is not listed, try COM4 --[[User:atylmo|atylmo]] 00:27, 1 January 2008 (CET))
 
  
5) Finally, launch QEMU and select ReactOS debug into the boot menu.
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qemu -L <Path to your QEMU folder>\bios -cdrom <filename>.iso -m 64
  
<b>FINAL NOTE:</b> the properties of the serial port, like the baud rate, are not important.
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== Grabbing debug messages ==
Instead, be sure to select "NO FLOW CONTROL" otherwise the terminal programme doesn't seem to receive the characters.
 
Hardware flow control (with RTS/CTS) or software flow control (XON/XOFF) does not seem to work during my tests.
 
  
and GreatLord suggests to use RosTE (ReactOS Test Environment) instead of setting this up manually.
+
By default, ReactOS debug messages are sent to the serial port (COM1).
 +
For grabbing that output, you need QEMU version 0.6.1 or later, in which you can specify the -serial option.
  
== ReactOS preloaded with QEMU ==
+
Valid arguments to -serial include file names, pipes, COM Ports and [http://www.qemu.org/qemu-doc.html#SEC10 more].
 +
Those arguments could be:
  
A preloaded QEMU image of ReactOS can be found [http://www.reactos.org/en/download.html here].
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-serial file:"C:\roslog.txt"
<!-- file not found, url updated, previous url: http://www.reactos.org/xhtml/en/download.html -->
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-serial pipe:"\\pipe1\"
 +
-serial COM4
  
 +
=== Redirect to a file ===
  
== Installing ReactOS on QEMU ==
+
If you're using the QEMU virtual machine and want to redirect the serial output to a file, add the following to your QEMU command line:
1. Create a drive image, on which ReactOS will be installed, by typing:
+
-serial file:''FILENAME''
 +
 
 +
Replace ''FILENAME'' with the name of a file, into which the debug output shall be written.
 +
 
 +
=== Redirect to the console ===
 +
 
 +
The method above redirects the output to a file. If you want to redirect it to the console, there are two different methods. They depend on the operating system you run QEMU under.
  
<pre>qemu-img create ReactOS.img 100M</pre>
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* Under Windows, add the following to your QEMU command line: <pre>-serial file:CON</pre>
 +
* Under a Unix-based operating system, add the following to your QEMU command line: <pre>-serial stdio</pre>
  
''100M'' stands for 100 megabytes- that shall be enough.
+
=== Serial port connection using com0com ===
It shall be greater, if you plan to install some application to try under ReactOS.
 
  
2. In *nix only, type:
+
Setup the com0com driver like explained in this [[com0com]] guide.
  
<pre>sudo umount /dev/shm
+
Add the following option to your QEMU command line
sudo mount -t tmpfs -o size=144m none /dev/shm</pre>
 
  
3. Type:
+
-serial COM4
  
<pre>qemu -L . -m 256 -cdrom ReactOS.iso -hda ReactOS.img -boot d -localtime -serial file:ReactOS.log</pre>
+
Write "COM4" with capital letters otherwise QEMU won't use the serial port at all!
''-m 256'' stand for 256MB RAM
 
''-boot d'' instructs qemu to boot from the cdrom. Without ''-boot d'' it will boot from the HDD (Reactos.img).
 
  
''ReactOS.iso'' is the image of the '''installation''' cd, which can be downloaded from http://www.reactos.org/en/download.html
+
Open your terminal program and start a new connection to your second virtual port. If that port is not listed, try COM4.
  
 +
Another option is to use the [http://svn.reactos.org/downloads/RosTE-0.1.exe ReactOS Test Environment] instead of setting this up manually.
  
When reinstalling ReactOS, perform steps 2 (if necessary) and 3 only.
+
== KQEMU ==
  
If you want to copy some files to ReactOS, you could create an CD-ROM image and mount it on qemu.
+
If you feel that QEMU is too slow for you, consider using the KQEMU module.
You can run qemu this way:
 
<pre>qemu -L . -m 256 -cdrom Applications.iso -hda ReactOS.img -localtime -serial file:ReactOS.log</pre>
 
  
== See also ==
+
Pleas bear in mind that it just works with QEMU up to 0.11 and isn't maintained anymore.
* [[HOWTO/setup_a_network_connection#QEMU_on_Linux|Setup network under Linux]]
 
* [[HOWTO/setup_win32_QEMU_with_the_KQEMU_accelerator_module|Setup Windows/ReactOS QEMU with the kqemu accelerator module]]
 
* [[Xen]]
 
  
== External sites ==
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[http://www.reactos.org/forum/viewtopic.php?f=22&t=1065 Tutorial] by mikedep333
  
* [http://fabrice.bellard.free.fr/qemu/ QEMU homepage]
+
== See also ==
 +
* [[Transfer files from the host OS to the virtual drive]]
  
 +
[[Category:Tutorial]]
 
[[Category:Virtualization software]]
 
[[Category:Virtualization software]]
[[Category:Free software]]
 

Latest revision as of 06:31, 30 May 2014

QEMU is a free x86 emulator for Linux and Windows. A preloaded QEMU image of ReactOS can be found here.

If you are looking for a faster virtual machine, give VirtualBox or VMware a try.

Installing ReactOS on QEMU

  • Create a drive image, on which ReactOS will be installed, by typing:
qemu-img create ReactOS.img 1000M

1000M stands for 1000 megabytes- that shall be enough. It shall be greater, if you plan to install some application to try under ReactOS.

  • In *nix only, type:
sudo umount /dev/shm
sudo mount -t tmpfs -o size=144m none /dev/shm
  • Type:
qemu -L . -m 256 -cdrom ReactOS.iso -hda ReactOS.img -boot d -localtime -serial file:ReactOS.log

-m 256 stand for 256 MB RAM -boot d instructs QEMU to boot from the CD-ROM. Without -boot d it will boot from the hard drive (Reactos.img).

ReactOS.iso is the image of the installation CD, which can be downloaded from http://www.reactos.org/en/download.html

When reinstalling ReactOS, perform steps 2 (if necessary) and 3 only.

If you want to copy some files to ReactOS, you could create an CD-ROM image and mount it on QEMU. You can run QEMU this way:

qemu -L . -m 256 -cdrom Applications.iso -hda ReactOS.img -localtime -serial file:ReactOS.log

Setting up Sound

Using AC97 emulation (QEMU 0.10.1 or later)

  • Set emulation to AC97 (-soundhw ac97)
  • Install the drivers using Downloader! (You need to reboot twice)
Known Issues
  • Audio sounds glitch when changing the audio stream with a high sample rate to a stream with low sample rate

Using ES1370MP emulation

  • Set emulation to ES1370 (-soundhw es1370)
  • Install drivers from here [1]
  • Create a file named import.reg with the following contents
REGEDIT4

[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E96C-E325-11CE-BFC1-08002BE10318}\0000\Settings]
"WaveVol_Left"=dword:00040000
"WaveVol_Right"=dword:00040000
"WaveLineSM"=dword:00000000
"WaveWaveInSM_Left"=dword:01010101
"WaveWaveInSM_Right"=dword:00000000
"CDVol_Left"=dword:fffffff6
"CDVol_Right"=dword:fffffff6
"CDLineSM"=dword:00000000
"CDWaveInSM_Left"=dword:00000000
"CDWaveInSM_Right"=dword:00000000
"LineInVol_Left"=dword:fffffff6
"LineInVol_Right"=dword:fffffff6
"LineLineSM"=dword:01000001
"LineWaveInSM_Left"=dword:00000000
"LineWaveInSM_Right"=dword:00000000
"MicBoost"=dword:00000001
"MicVol"=dword:fffffff6
"MicLineMute"=dword:00000001
"MicWaveInSM_Left"=dword:00000000
"MicWaveInSM_Right"=dword:00000000
"AuxVol_Left"=dword:fffffff6
"AuxVol_Right"=dword:fffffff6
"AuxLineSM"=dword:00000000
"AuxWaveInSM_Left"=dword:00000000
"AuxWaveInSM_Right"=dword:00000000
"PhoneVol"=dword:fffffff6
"PhoneMute"=dword:00000000
"PhoneWaveInSM_Left"=dword:00000000
"PhoneWaveInSM_Right"=dword:00000000
"LineOutVol_Left"=dword:fff9f203
"LineOutVol_Right"=dword:fff9f203
"LineOutMute"=dword:00000000
  • Import those settings by starting cmd.exe and regedit import.reg
  • Reboot

If you don't hear any sound in QEMU 0.10.x, you'll have to set QEMU_AUDIO_DRV=fmod (available: dsound; fmod; sdl; none ; wav (dump to file) – see QEMU documentation for information.

Known Issues

After starting first audio stream, you need to leave QEMU and re-enter (seems to be a QEMU bug)

Setting up network

Networking should work by itself using the '-net nic,model=ne2k_pci' and '-net user' switches with QEMU.

Using ReactOS LiveCD on QEMU

  1. Move to the previously created directory with the cd command.
  2. There, type in the following command:
qemu -L <Path to your QEMU folder>\bios -cdrom <filename>.iso -m 64

Grabbing debug messages

By default, ReactOS debug messages are sent to the serial port (COM1). For grabbing that output, you need QEMU version 0.6.1 or later, in which you can specify the -serial option.

Valid arguments to -serial include file names, pipes, COM Ports and more. Those arguments could be:

-serial file:"C:\roslog.txt"
-serial pipe:"\\pipe1\"
-serial COM4

Redirect to a file

If you're using the QEMU virtual machine and want to redirect the serial output to a file, add the following to your QEMU command line:

-serial file:FILENAME

Replace FILENAME with the name of a file, into which the debug output shall be written.

Redirect to the console

The method above redirects the output to a file. If you want to redirect it to the console, there are two different methods. They depend on the operating system you run QEMU under.

  • Under Windows, add the following to your QEMU command line:
    -serial file:CON
  • Under a Unix-based operating system, add the following to your QEMU command line:
    -serial stdio

Serial port connection using com0com

Setup the com0com driver like explained in this com0com guide.

Add the following option to your QEMU command line

-serial COM4

Write "COM4" with capital letters otherwise QEMU won't use the serial port at all!

Open your terminal program and start a new connection to your second virtual port. If that port is not listed, try COM4.

Another option is to use the ReactOS Test Environment instead of setting this up manually.

KQEMU

If you feel that QEMU is too slow for you, consider using the KQEMU module.

Pleas bear in mind that it just works with QEMU up to 0.11 and isn't maintained anymore.

Tutorial by mikedep333

See also