QEMU PC emulator version 0.9.1 (kvm-72), Copyright (c) 2003-2008 Fabrice Bellard usage: qemu [options] [disk_image] 'disk_image' is a raw hard image image for IDE hard disk 0 Standard options: -M machine select emulated machine (-M ? for list) -cpu cpu select CPU (-cpu ? for list) -fda/-fdb file use 'file' as floppy disk 0/1 image -hda/-hdb file use 'file' as IDE hard disk 0/1 image -hdc/-hdd file use 'file' as IDE hard disk 2/3 image -cdrom file use 'file' as IDE cdrom image (cdrom is ide1 master) -drive [file=file][,if=type][,bus=n][,unit=m][,media=d][,index=i] [,cyls=c,heads=h,secs=s[,trans=t]][,snapshot=on|off] -fakeopt [,cache=on|off][,format=f][,boot=on|off] use 'file' as a drive image -mtdblock file use 'file' as on-board Flash memory image -sd file use 'file' as SecureDigital card image -pflash file use 'file' as a parallel flash image -boot [a|c|d|n] boot on floppy (a), hard disk (c), CD-ROM (d), or network (n) -snapshot write to temporary files instead of disk image files -no-frame open SDL window without a frame and window decorations -alt-grab use Ctrl-Alt-Shift to grab mouse (instead of Ctrl-Alt) -no-quit disable SDL window close capability -no-fd-bootchk disable boot signature checking for floppy disks -m megs set virtual RAM size to megs MB [default=128] -smp n set the number of CPUs to 'n' [default=1] -nographic disable graphical output and redirect serial I/Os to console -portrait rotate graphical output 90 deg left (only PXA LCD) -k language use keyboard layout (for example "fr" for French) -audio-help print list of audio drivers and their options -soundhw c1,... enable audio support and only specified sound cards (comma separated list) use -soundhw ? to get the list of supported cards use -soundhw all to enable all of them -localtime set the real time clock to local time [default=utc] -full-screen start in full screen -win2k-hack use it when installing Windows 2000 to avoid a disk full bug -usb enable the USB driver (will be the default soon) -usbdevice name add the host or guest USB device 'name' -name string set the name of the guest Network options: -net nic[,vlan=n][,macaddr=addr][,model=type] create a new Network Interface Card and connect it to VLAN 'n' -net user[,vlan=n][,hostname=host] connect the user mode network stack to VLAN 'n' and send hostname 'host' to DHCP clients -net tap[,vlan=n][,fd=h][,ifname=name][,script=file][,downscript=dfile] connect the host TAP network interface to VLAN 'n' and use the network scripts 'file' (default=/etc/kvm/kvm-ifup) and 'dfile' (default=/etc/kvm/kvm-ifdown); use '[down]script=no' to disable script execution; use 'fd=h' to connect to an already opened TAP interface -net socket[,vlan=n][,fd=h][,listen=[host]:port][,connect=host:port] connect the vlan 'n' to another VLAN using a socket connection -net socket[,vlan=n][,fd=h][,mcast=maddr:port] connect the vlan 'n' to multicast maddr and port -net none use it alone to have zero network devices; if no -net option is provided, the default is '-net nic -net user' -tftp dir allow tftp access to files in dir [-net user] -bootp file advertise file in BOOTP replies -smb dir allow SMB access to files in 'dir' [-net user] -redir [tcp|udp]:host-port:[guest-host]:guest-port redirect TCP or UDP connections from host to guest [-net user] Linux boot specific: -kernel bzImage use 'bzImage' as kernel image -append cmdline use 'cmdline' as kernel command line -initrd file use 'file' as initial ram disk Debug/Expert options: -monitor dev redirect the monitor to char device 'dev' -serial dev redirect the serial port to char device 'dev' -parallel dev redirect the parallel port to char device 'dev' -pidfile file Write PID to 'file' -S freeze CPU at startup (use 'c' to start execution) -s wait gdb connection to port -p port set gdb connection port [default=1234] -d item1,... output log to /tmp/qemu.log (use -d ? for a list of log items) -hdachs c,h,s[,t] force hard disk 0 physical geometry and the optional BIOS translation (t=none or lba) (usually qemu can guess them) -L path set the directory for the BIOS, VGA BIOS and keymaps -no-kvm disable KVM hardware virtualization -no-kvm-irqchip disable KVM kernel mode PIC/IOAPIC/LAPIC -no-kvm-pit disable KVM kernel mode PIT -std-vga simulate a standard VGA card with VESA Bochs Extensions (default is CL-GD5446 PCI VGA) -no-acpi disable ACPI -curses use a curses/ncurses interface instead of SDL -no-reboot exit instead of rebooting -no-shutdown stop before shutdown -loadvm [tag|id] start right away with a saved state (loadvm in monitor) -vnc display start a VNC server on display -daemonize daemonize QEMU after initializing -tdf inject timer interrupts that got lost -kvm-shadow-memory megs set the amount of shadow pages to be allocated -mem-path set the path to hugetlbfs/tmpfs mounted directory, also enables allocation of guest memory with huge pages -option-rom rom load a file, rom, into the option ROM space -clock force the use of the given methods for timer alarm. To see what timers are available use -clock ? -startdate select initial date of the clock -icount [N|auto] Enable virtual instruction counter with 2^N clock ticks per instruction During emulation, the following keys are useful: ctrl-alt-f toggle full screen ctrl-alt-n switch to virtual console 'n' ctrl-alt toggle mouse and keyboard grab When using -nographic, press 'ctrl-a h' to get some help.