Pull down the root filesystem with:

wget http://www.stearns.org/uml-root/root_fs.fc-3-base.pristine.20050605.bz2
cp -p --sparse=always <( cat root_fs.fc-3-base.pristine.20050605.bz2 | bunzip2 -c - ) root_fs.2005060501
chmod 644 root_fs.2005060501

	Current root password:     uml-root-changeme   .  You'll be
asked to change this on first login.

	IP address 192.168.0.250, default gateway (the host needs to
have this address as one of its ip addresses): 192.168.0.254 , netmask
255.255.255.0 .

	Yum is partially configured, although you may wish to add the
contents of http://ford.stearns.org/fedora/yum.conf.addme .

	Pull down a kernel (see http://www.stearns.org/uml/ or other
places), decompress with bunzip2, and rename it to linux26 .  To get a
swap file, do

wget http://www.stearns.org/mkrootfs/emptyfs.swap.512.bz2
cp -p --sparse=always <( cat emptyfs.swap.512.bz2 | bunzip2 -c - ) swap
chmod 644 swap

	Sample command line to bring it up:

./linux26 mem=160M ubd0=cow,root_fs.2005060501 ubd1=swap root=/dev/ubd/0 con=pty con0=fd:0,fd:1

	To have networking going as well:

TapDevice=`sudo tunctl -b -u 0`
sudo ifconfig $TapDevice 192.168.0.254 netmask 255.255.255.0 broadcast 192.168.0.255 up
screen -S uml_switch -t uml_switch -d -m sudo uml_switch -tap $TapDevice
#Let device be created.
sleep 5
sudo chmod 666 /dev/net/tun
sudo chmod 777 /tmp/uml.ctl


	Then start the uml up with networking going:

./linux26 mem=160M ubd0=cow,root_fs.2005060501 ubd1=swap eth0=daemon root=/dev/ubd/0 con=pty con0=fd:0,fd:1