diff --git a/bootparams.md b/bootparams.md
new file mode 100644
index 0000000..d064c15
--- /dev/null
+++ b/bootparams.md
@@ -0,0 +1,173 @@
+The following values can be passed as boot parameters to control the behaviour of the install script and provide values for the configuration.
+
+## purge
+When purge is set the installer will boot into single user mode, import the given zpools and destroy them, this is a automated way to delete a SmartOS installation.
+
+### Possible values
+Colon separated list of zpools do purge.
+
+### Example
+```
+purge=zones,data
+```
+
+## unattended
+When set the installer will not enter interactive mode but read all options from the boot params, all the following options will have no effect.
+
+### Possible values
+* true
+
+### Example
+```
+unattended=true
+```
+
+## disks
+The disks used for the zpool.
+
+### Possible values
+* `all` - uses all available disks
+* Colon sepperated list of disks
+
+### Example
+```
+disks=all
+disks=c0t0d0,c1t0d0
+```
+
+## pool_profile
+The raid(z) profile used to create the pool, this is automatically decided during the interactive installation based on the number of the disks. The original behaviour can be used by passing `auto`.
+
+### Possible values
+* auto - original behavior
+* raidz - forces raidZ
+* mirror - forces a stripe of mirrors containing two disks each
+* raid10+2 - same as mirror but declares two disks as spare.
+
+### Example
+```
+pool_profile=raid10+2
+pool_profile=auto
+```
+
+## admin_nic
+Interface used for the admin network, this is **not** the MAC address of the interface but the name.
+
+### Possible values
+Name of a interface, i.e. `igb0`.
+
+### Example
+```
+admin_nic=igb0
+```
+
+## admin_ip
+The IP Address of the admin interface.
+
+
+### Possible values
+* a valid IPv4
+* `dhcp`
+
+### Example
+```
+admin_ip=10.0.0.42
+admin_ip=dhcp
+```
+
+## admin_netmask
+The netmask of the admin interface. This is ignored if admin_ip is `dhcp`.
+
+
+### Possible values
+* a valid IPv4
+
+### Example
+```
+admin_netmask=255.255.255.0
+```
+
+## gateway
+The systems default gateway. This is ignored if admin_ip is `dhcp`.
+
+### Possible values
+* a valid IPv4
+
+### Example
+```
+admin_netmask=10.0.0.1
+```
+
+## dns1 / dns2
+The systems DNS servers. This is ignored if admin_ip is `dhcp`.
+
+### Possible values
+* a valid IPv4
+
+
+### Example
+```
+dns1=10.0.0.1
+dns2=8.8.8.8
+```
+
+## domain
+The systems domain name. This is ignored if admin_ip is `dhcp`.
+
+### Possible values
+* a valid domain
+
+
+### Example
+```
+domain=local
+```
+
+## search_domain
+The systems search domain. This is ignored if admin_ip is `dhcp`.
+
+
+### Possible values
+* a valid domain
+
+
+### Example
+```
+search_domain=local
+```
+
+
+## root_pw
+The root password for the system, in clear text.
+
+### Possible values
+* random - a random 32 char root password will be created and written to /usbkey
+* any password
+
+
+### Example
+```
+root_pw=random
+root_pw=not_random
+```
+
+## run_script
+A URL for a bash script to be executed after the installer has finished, this script can modify the system, add values to the config or do whatever it wants. If this parameter is given the installer will bring up the admin_nic 'manually' to download the script and execute it.
+
+### Possible values
+* Any URL that is reachable with the admin_ network configuraiton
+
+### Example
+```
+run_script=http://10.0.0.1/bootstrap/init.sh
+```
+
+ 
+# Example PXE file
+```
+#!ipxe
+
+kernel /smartos/20130808T195337Z/platform/i86pc/kernel/amd64/unix -B smartos=true,unattended=true,admin_nic=igb0,admin_ip=dhcp,root_pw=random,disks=all,pool_profile=raid10+2,run_script='http://10.0.0.1/FiFo/bootstrap/bootstrap.sh'
+initrd /smartos/20130808T195337Z/platform/i86pc/amd64/boot_archive
+boot
+```
diff --git a/lib/svc/method/smartdc-config b/lib/svc/method/smartdc-config
index 36ba5b4..832c939 100644
--- a/lib/svc/method/smartdc-config
+++ b/lib/svc/method/smartdc-config
@@ -56,6 +56,17 @@ set_ntp_hosts() {
 case "$1" in
 'start')
 
+    # If purge is defined we want to purge the defined datasets
+    if /bin/bootparams | grep "^purge=" > /dev/null 2>&1
+    then
+        for pool in $(/bin/bootparams | grep "^purge=" | sed "s/^purge=//" | sed 's/,/ /g')
+        do
+            echo "Purging pool $pool."
+            zpool import $pool
+            zpool destroy $pool
+        done
+        halt
+    fi
     # If we're a headnode, see if we have to do interactive configuration.
     if /bin/bootparams | grep "^headnode=true" > /dev/null 2>&1; then
         USB_PATH=/mnt/`svcprop -p "joyentfs/usb_mountpoint" svc:/system/filesystem/smartdc:default`
@@ -104,9 +115,14 @@ case "$1" in
                 # Skipping interactive config, bypass rest of script.
                 exit $SMF_EXIT_OK
             fi
-
-            /smartdc/bin/smartos_prompt_config.sh "${USB_PATH}" \
-                </dev/console >&/dev/console
+            if /bin/bootparams | grep "^unattended=true" > /dev/null 2>&1
+            then
+                echo "This host uses the unattended configuratio mode."
+                /smartdc/bin/smartos_unattended_config.sh "${USB_PATH}"
+            else
+                /smartdc/bin/smartos_prompt_config.sh "${USB_PATH}" \
+                    </dev/console >&/dev/console
+            fi
 
             # If user quit from interactive configuration then we're done.
             [[ ! -f ${USB_PATH}/config ]] && exit $SMF_EXIT_OK
diff --git a/smartdc/bin/smartos_unattended_config.sh b/smartdc/bin/smartos_unattended_config.sh
new file mode 100644
index 0000000..7920239
--- /dev/null
+++ b/smartdc/bin/smartos_unattended_config.sh
@@ -0,0 +1,425 @@
+#!/usr/bin/bash
+
+# XXX - TODO
+# - if $ntp_hosts == "local", configure ntp for no external time source
+# - try to figure out why ^C doesn't intr when running under SMF
+
+PATH=/usr/sbin:/usr/bin
+export PATH
+. /lib/sdc/config.sh
+load_sdc_sysinfo
+load_sdc_config
+
+# Defaults
+datacenter_headnode_id=0
+mail_to="root@localhost"
+ntp_hosts="pool.ntp.org"
+dns_resolver1="8.8.8.8"
+dns_resolver2="8.8.4.4"
+
+# Globals
+declare -a states
+declare -a nics
+declare -a assigned
+declare -a DISK_LIST
+
+#
+# Reads a boot parameters returns the assigned value for a given key.
+# If the key is not found an empty string is returned.
+# The data is stored in $val.
+#
+get_bootparam()
+{
+    val=""
+    if /bin/bootparams | grep "^$1=" > /dev/null 2>&1
+    then
+        val=$(/bin/bootparams | grep "^$1=" | sed "s/^$1=//")
+    fi
+}
+
+sigexit()
+{
+    echo
+    echo "System configuration has not been completed."
+    echo "You must reboot to re-run system configuration."
+    exit 0
+}
+
+create_dump()
+{
+    # Get avail zpool size - this assumes we're not using any space yet.
+    base_size=`zfs get -H -p -o value available ${SYS_ZPOOL}`
+    # Convert to MB
+    base_size=`expr $base_size / 1000000`
+    # Calculate 5% of that
+    base_size=`expr $base_size / 20`
+    # Cap it at 4GB
+    [ ${base_size} -gt 4096 ] && base_size=4096
+
+    # Create the dump zvol
+    zfs create -V ${base_size}mb ${SYS_ZPOOL}/dump || \
+        fatal "failed to create the dump zvol"
+    dumpadm -d /dev/zvol/dsk/${SYS_ZPOOL}/dump
+}
+
+#
+# Setup the persistent datasets on the zpool.
+#
+setup_datasets()
+{
+    datasets=$(zfs list -H -o name | xargs)
+
+    if ! echo $datasets | grep dump > /dev/null; then
+        printf "%-56s" "Making dump zvol... "
+        create_dump
+        printf "%4s\n" "done"
+    fi
+
+    if ! echo $datasets | grep ${CONFDS} > /dev/null; then
+        printf "%-56s" "Initializing config dataset for zones... "
+        zfs create ${CONFDS} || fatal "failed to create the config dataset"
+        chmod 755 /${CONFDS}
+        cp -p /etc/zones/* /${CONFDS}
+        zfs set mountpoint=legacy ${CONFDS}
+        printf "%4s\n" "done"
+    fi
+
+    if ! echo $datasets | grep ${USBKEYDS} > /dev/null; then
+        if [[ -n $(/bin/bootparams | grep "^smartos=true") ]]; then
+            printf "%-56s" "Creating config dataset... "
+            zfs create -o mountpoint=legacy ${USBKEYDS} || \
+                fatal "failed to create the config dataset"
+            mkdir /usbkey
+            mount -F zfs ${USBKEYDS} /usbkey
+            printf "%4s\n" "done"
+        fi
+    fi
+
+    if ! echo $datasets | grep ${COREDS} > /dev/null; then
+        printf "%-56s" "Creating global cores dataset... "
+        zfs create -o quota=10g -o mountpoint=/${SYS_ZPOOL}/global/cores \
+            -o compression=gzip ${COREDS} || \
+            fatal "failed to create the cores dataset"
+        printf "%4s\n" "done"
+    fi
+
+    if ! echo $datasets | grep ${OPTDS} > /dev/null; then
+        printf "%-56s" "Creating opt dataset... "
+        zfs create -o mountpoint=legacy ${OPTDS} || \
+            fatal "failed to create the opt dataset"
+        printf "%4s\n" "done"
+    fi
+
+    if ! echo $datasets | grep ${VARDS} > /dev/null; then
+        printf "%-56s" "Initializing var dataset... "
+        zfs create ${VARDS} || \
+            fatal "failed to create the var dataset"
+        printf "%4s\n" "done"
+        chmod 755 /${VARDS}
+        cd /var
+        if ( ! find . -print | cpio -pdm /${VARDS} 2>/dev/null ); then
+            fatal "failed to initialize the var directory"
+        fi
+
+        zfs set mountpoint=legacy ${VARDS}
+
+        if ! echo $datasets | grep ${SWAPVOL} > /dev/null; then
+            printf "%-56s" "Creating swap zvol... "
+            #
+            # We cannot allow the swap size to be less than the size of DRAM, lest$
+            # we run into the availrmem double accounting issue for locked$
+            # anonymous memory that is backed by in-memory swap (which will$
+            # severely and artificially limit VM tenancy).  We will therfore not$
+            # create a swap device smaller than DRAM -- but we still allow for the$
+            # configuration variable to account for actual consumed space by using$
+            # it to set the refreservation on the swap volume if/when the$
+            # specified size is smaller than DRAM.$
+            #
+            size=${SYSINFO_MiB_of_Memory}
+            zfs create -V ${size}mb ${SWAPVOL}
+            swap -a /dev/zvol/dsk/${SWAPVOL}
+        fi
+        printf "%4s\n" "done"
+    fi
+}
+
+create_zpool()
+{
+    disks=$1
+    pool=zones
+
+    # If the pool already exists, don't create it again.
+    if /usr/sbin/zpool list -H -o name $pool; then
+        return 0
+    fi
+
+    disk_count=$(echo "${disks}" | wc -w | tr -d ' ')
+    printf "%-56s" "Creating pool $pool... "
+
+    if [[ "${disk_count}" == "0" ]]
+    then
+        fatal "no disks found, can't create zpool"
+    fi
+
+    # Readthe pool_profile from boot params
+    get_bootparam "pool_profile"
+    profile="${val}"
+
+    # If no pool profile was provided, use a default based on the number of
+    # devices in that pool.
+    if [[ -z ${profile} ]]; then
+        case ${disk_count} in
+            1)
+                profile="";;
+            2)
+                profile=mirror;;
+            *)
+                profile=raidz;;
+        esac
+    fi
+
+    zpool_args=""
+
+    # When creating a mirrored pool, create a mirrored pair of devices out of
+    # every two disks.
+    if [[ ${profile} == "mirror" ]]; then
+        ii=0
+        for disk in ${disks}; do
+            if [[ $(( $ii % 2 )) -eq 0 ]]; then
+                zpool_args="${zpool_args} ${profile}"
+            fi
+            zpool_args="${zpool_args} ${disk}"
+            ii=$(($ii + 1))
+        done
+    elif [[ ${profile} == "raid10+2" ]]
+    then
+        ii=0
+        for disk in ${disks}; do
+            if [[ $(( $ii % 2 )) -eq 0 ]]; then
+                zpool_args="${zpool_args} mirror"
+            fi
+            zpool_args="${zpool_args} ${disk}"
+            ii=$(($ii + 1))
+        done
+        # Replace the last mirror with spares so we get two spare disks
+        zpool_args=$(echo "${zpool_args}" | sed 's/\(.*\)mirror/\1spare/')
+    else
+        zpool_args="${profile} ${disks}"
+    fi
+
+    zpool create -f ${pool} ${zpool_args} || \
+        fatal "failed to create pool ${pool}"
+    zfs set atime=off ${pool} || \
+        fatal "failed to set atime=off for pool ${pool}"
+
+    printf "%4s\n" "done"
+}
+
+create_zpools()
+{
+    devs=$1
+
+    export SYS_ZPOOL="zones"
+    create_zpool "$devs"
+    sleep 5
+
+    svccfg -s svc:/system/smartdc/init setprop config/zpool="zones"
+    svccfg -s svc:/system/smartdc/init:default refresh
+
+    export CONFDS=${SYS_ZPOOL}/config
+    export COREDS=${SYS_ZPOOL}/cores
+    export OPTDS=${SYS_ZPOOL}/opt
+    export VARDS=${SYS_ZPOOL}/var
+    export USBKEYDS=${SYS_ZPOOL}/usbkey
+    export SWAPVOL=${SYS_ZPOOL}/swap
+
+    setup_datasets
+    #
+    # Since there may be more than one storage pool on the system, put a
+    # file with a certain name in the actual "system" pool.
+    #
+    touch /${SYS_ZPOOL}/.system_pool
+}
+
+
+printheader()
+{
+    local newline=
+    local cols=`tput cols`
+    local subheader=$1
+
+    if [ $cols -gt 80 ] ;then
+        newline='\n'
+    fi
+
+    for i in {1..80} ; do printf "-" ; done && printf "$newline"
+    printf " %-40s\n" "SmartOS Setup"
+    printf " %-40s%38s\n" "$subheader" "http://wiki.smartos.org/install"
+    for i in {1..80} ; do printf "-" ; done && printf "$newline"
+
+}
+
+trap sigexit SIGINT
+
+ifconfig -a plumb
+
+export TERM=sun-color
+export TERM=xterm-color
+stty erase ^H
+
+printheader "Copyright 2011, Joyent, Inc."
+
+#
+# Main loop to prompt for user input
+#
+
+printheader "Networking"
+
+get_bootparam "admin_nic"
+
+admin_interface=$val
+admin_nic=$(dladm show-phys -pmo address ${val})
+
+get_bootparam "admin_ip"
+admin_ip="$val"
+if [[ $admin_ip != 'dhcp' ]]; then
+    get_bootparam "admin_netmask"
+    admin_netmask="$val"
+
+    message="
+  The default gateway will determine which network will be used to connect to
+  other networks.\n\n"
+
+    printf "$message"
+
+    get_bootparam "gateway"
+    headnode_default_gateway="$val"
+
+    get_bootparam "dns1"
+    dns_resolver1="$val"
+
+    get_bootparam "dns2"
+    dns_resolver2="$val"
+
+    get_bootparam "domain"
+    domainname="$val"
+    get_bootparam "search_domain"
+    dns_domain="$val"
+fi
+
+
+get_bootparam "disks"
+if [[ $val == "all" ]]; then
+    DISK_LIST="$(disklist -n)"
+else
+    DISK_LIST="${val}"
+fi
+
+get_bootparam "root_pw"
+if [[ "${val}" == "random" ]]
+then
+    val=$(cat /dev/urandom | LC_CTYPE=C tr -dc '[:alpha:]0-9$:_+-' | fold -w 32 | head -n 1)
+fi
+root_shadow="$val"
+
+printheader "Verify Configuration"
+message=""
+
+printf "$message"
+
+echo "Verify that the following values are correct:"
+echo
+echo "MAC address: $admin_nic"
+echo "IP address: $admin_ip"
+if [[ $admin_ip != 'dhcp' ]]; then
+    echo "Netmask: $admin_netmask"
+    echo "Gateway router IP address: $headnode_default_gateway"
+    echo "DNS servers: $dns_resolver1,$dns_resolver2"
+    echo "Default DNS search domain: $dns_domain"
+    echo "NTP server: $ntp_hosts"
+    echo "Domain name: $domainname"
+    echo
+fi
+
+admin_network="$net_a.$net_b.$net_c.$net_d"
+
+#
+# Generate config file
+#
+tmp_config=/tmp_config
+touch $tmp_config
+chmod 600 $tmp_config
+
+echo "#" >$tmp_config
+echo "# This file was auto-generated and must be source-able by bash." \
+    >>$tmp_config
+echo "#" >>$tmp_config
+echo >>$tmp_config
+
+# If in a VM, setup coal so networking will work.
+platform=$(smbios -t1 | nawk '{if ($1 == "Product:") print $2}')
+[ "$platform" == "VMware" ] && echo "coal=true" >>$tmp_config
+
+echo "# admin_nic is the nic admin_ip will be connected to for headnode zones."\
+    >>$tmp_config
+echo "admin_nic=$admin_nic" >>$tmp_config
+echo "admin_ip=$admin_ip" >>$tmp_config
+echo "admin_netmask=$admin_netmask" >>$tmp_config
+echo "admin_network=$admin_network" >>$tmp_config
+echo "admin_gateway=$admin_ip" >>$tmp_config
+echo >>$tmp_config
+
+echo "headnode_default_gateway=$headnode_default_gateway" >>$tmp_config
+echo >>$tmp_config
+
+echo "dns_resolvers=$dns_resolver1,$dns_resolver2" >>$tmp_config
+echo "dns_domain=$dns_domain" >>$tmp_config
+echo >>$tmp_config
+
+
+echo "ntp_hosts=$ntp_hosts" >>$tmp_config
+
+echo "compute_node_ntp_hosts=$admin_ip" >>$tmp_config
+echo >>$tmp_config
+
+echo
+
+create_zpools "$DISK_LIST"
+
+echo "The system will now finish configuration and reboot. Please wait..."
+mv $tmp_config /usbkey/config
+
+
+# set the root password
+root_shadow=$(/usr/lib/cryptpass "$root_shadow")
+sed -e "s|^root:[^\:]*:|root:${root_shadow}:|" /etc/shadow > /usbkey/shadow \
+    && chmod 400 /usbkey/shadow
+
+cp -rp /etc/ssh /usbkey/ssh
+
+get_bootparam "run_script"
+if [ ! -z $val ]
+then
+    script=$val
+    echo "It was requested to run the script $script ..."
+    echo "Setting up network..."
+    ifconfig $admin_interface plumb
+    if [[ "${admin_ip}" == "dhcp" ]]
+    then
+        echo "We're using DHCP"
+        ifconfig $admin_interface dhcp
+    else
+        echo "Configuring it manually"
+        ifconfig $admin_interface $admin_ip netmask $admin_netmask
+        route add default $headnode_default_gateway
+        echo "nameserver $dns_resolver1" > /etc/resolv.conf
+        echo "nameserver $dns_resolver1" >> /etc/resolv.conf
+        echo "domain $domainname" >> /etc/resolv.conf
+        echo "search $dns_domain" >> /etc/resolv.conf
+        /etc/init.d/nscd stop
+        /etc/init.d/nscd start
+    fi
+    bash <(curl -kL ${script})
+fi
+
+reboot