Difference between revisions of "QEMU"

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Qemu is a free x86 Emulator/Virtual Machine for Linux and Windows.
+
[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 ==
+
== Installing ReactOS on QEMU ==
  
By default, ReactOS debug messages are sent to the serial port (COM1).
+
* Create a drive image, on which ReactOS will be installed, by typing:
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 filenames, pipes, COM Ports and [http://bellard.org/qemu/qemu-doc.html#SEC10 more].
+
qemu-img create ReactOS.img 1000M
Those arguments could be:
+
<pre>
+
-serial file:"C:\roslog.txt"
+
-serial pipe:"\\pipe1\"
+
-serial COM4
+
</pre>
+
  
=== Using com0com with QEMU ===
+
''1000M'' stands for 1000 megabytes- that shall be enough. It shall be greater, if you plan to install some application to try under ReactOS.
[http://com0com.sourceforge.net/ 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.
+
  
Useful terminal programs include:
+
* In *nix only, type:
* Hyper Terminal
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* Teraterm
+
* [http://www.chiark.greenend.org.uk/~sgtatham/putty/download.html Putty]
+
* [http://www.hw-group.com/products/hercules/index_en.html Hercules]
+
* [[ReactOSDbg]]
+
  
Get com0com and install it. Run the com0com command shell and type
+
sudo umount /dev/shm
 +
sudo mount -t tmpfs -o size=144m none /dev/shm
  
<pre>install PortName=COM4 PortName=COM5</pre>
+
* Type:
  
and it will create two virtual ports connected together.
+
qemu -L . -m 256 -cdrom ReactOS.iso -hda ReactOS.img -boot d -localtime -serial file:ReactOS.log
If you prefer different ports, just change the port names (a simple help is avaible via "help" command).
+
  
Add the following option to your QEMU command line
+
''-m 256'' stand for 256&nbsp;MB RAM
 +
''-boot d'' instructs QEMU to boot from the CD-ROM. Without ''-boot d'' it will boot from the hard drive (Reactos.img).
  
<pre>-serial COM4</pre>
+
''ReactOS.iso'' is the image of the '''installation''' CD, which can be downloaded from http://www.reactos.org/en/download.html
  
<b>WARNING:</b> you need to write "COM4" with capital letters and not "com4" otherwise QEMU won't use the serial port at all!
+
When reinstalling ReactOS, perform steps 2 (if necessary) and 3 only.
  
Open you terminal program and start a new connection on port "COM5". If COM5 is not listed, try COM4.
+
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:
  
<b>FINAL NOTE:</b> the properties of the serial port, like the baud rate, are not important.
+
qemu -L . -m 256 -cdrom Applications.iso -hda ReactOS.img -localtime -serial file:ReactOS.log
Instead, be sure to select "NO FLOW CONTROL" otherwise the terminal program won't receive characters.
+
  
Another option is to use the [http://svn.reactos.org/downloads/RosTE-0.1.exe ReactOS Test Environment] instead of setting this up manually.
+
=== Setting up Sound ===
  
== ReactOS preloaded with QEMU ==
+
==== Using AC97 emulation (QEMU 0.10.1 or later) ====
  
A preloaded QEMU image of ReactOS can be found [http://www.reactos.org/en/download.html here].
+
* Set emulation to AC97 (-soundhw ac97)
<!-- file not found, url updated, previous url: http://www.reactos.org/xhtml/en/download.html -->
+
* Install the drivers using Downloader! (You need to reboot twice)
  
 +
===== Known Issues =====
  
== Installing ReactOS on QEMU ==
+
* Audio sounds glitch when changing the audio stream with a high sample rate to a stream with low sample rate
1. Create a drive image, on which ReactOS will be installed, by typing:
+
  
<pre>qemu-img create ReactOS.img 100M</pre>
+
==== Using ES1370MP emulation ====
  
''100M'' stands for 100 megabytes- that shall be enough.
+
* Set emulation to ES1370 (-soundhw es1370)
It shall be greater, if you plan to install some application to try under ReactOS.
+
* Install drivers from here [http://rapidshare.com/files/236843299/windows2.zip.html]
 +
* Create a file named import.reg with the following contents
  
2. In *nix only, type:
+
<syntaxhighlight lang="reg">
 +
REGEDIT4
  
<pre>sudo umount /dev/shm
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[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E96C-E325-11CE-BFC1-08002BE10318}\0000\Settings]
sudo mount -t tmpfs -o size=144m none /dev/shm</pre>
+
"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>
  
3. Type:
+
* Import those settings by starting cmd.exe and regedit import.reg
 +
* Reboot
  
<pre>qemu -L . -m 256 -cdrom ReactOS.iso -hda ReactOS.img -boot d -localtime -serial file:ReactOS.log</pre>
+
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.
''-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
+
===== Known Issues =====
  
 +
After starting first audio stream, you need to leave QEMU and re-enter (seems to be a QEMU bug)
  
When reinstalling ReactOS, perform steps 2 (if necessary) and 3 only.
+
=== Setting up network ===
  
If you want to copy some files to ReactOS, you could create an CD-ROM image and mount it on qemu.
+
Networking should work by itself using the '-net nic,model=ne2k_pci' and '-net user' switches with QEMU.
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 ==
+
== Using ReactOS [[LiveCD]] on QEMU ==
* [[HOWTO/setup_a_network_connection|Setup a network connection]]
+
* [[HOWTO/setup_win32_QEMU_with_the_KQEMU_accelerator_module|Setup Windows/ReactOS QEMU with the kqemu accelerator module]]
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* [[Xen]]
+
  
== External sites ==
+
# Move to the previously created directory with the <code>cd</code> command.
 +
# There, type in the following command:
  
* [http://fabrice.bellard.free.fr/qemu/ QEMU homepage]
+
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 [http://www.qemu.org/qemu-doc.html#SEC10 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: <pre>-serial file:CON</pre>
 +
* Under a Unix-based operating system, add the following to your QEMU command line: <pre>-serial stdio</pre>
 +
 
 +
=== 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 [http://svn.reactos.org/downloads/RosTE-0.1.exe 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.
 +
 
 +
[http://www.reactos.org/forum/viewtopic.php?f=22&t=1065 Tutorial] by mikedep333
 +
 
 +
== 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