Fedora 12
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Install GuestOS
  This example shows to install Fedora 12 for GuestOS. Desktop Environment is required.
[1] Create an image file and start X server.
[root@dlp ~]#
mkdir /var/kvm

[root@dlp ~]#
qemu-img create -f qcow2 /var/kvm/www.img 20G

Formatting '/var/kvm/www.img', fmt=qcow2 size=21474836480 encryption=off cluster_size=0
[root@dlp ~]#
startx
[2] Run X terminal like below. If you don't have ISO file, insert install disk in your computer and input '-cdrom /dev/cdrom'.
[root@dlp ~]# cd /var/kvm
[root@dlp kvm]# qemu-kvm \
-m 512 \
-cdrom /var/kvm/iso/Fedora-12-x86_64-DVD.iso \
-hda www.img

# -m [amount of memory]
# -hda [virtual disk]

[3] Installer starts like below. After finishing to install Fedora 12, the system will restart and boot automatically.
 
[4] To start guestOS, input commands like below.
[root@dlp ~]# cd /var/kvm
[root@dlp kvm]# qemu-kvm -m 512 -hda www.img -daemonize

# -m [amount of memory]
# -hda [virtual disk]
# -daemonize [make it be daemon]
# -nographic if you don't need to connect with graphic add this option

  Guest is running normally.