diff --git a/files/initrd/opt/arc/arc-functions.sh b/files/initrd/opt/arc/arc-functions.sh
index 5c72981d..c1590477 100755
--- a/files/initrd/opt/arc/arc-functions.sh
+++ b/files/initrd/opt/arc/arc-functions.sh
@@ -242,7 +242,6 @@ function cmdlineMenu() {
   echo "5 \"PCI/IRQ Fix\""                                      >>"${TMP_PATH}/menu"
   echo "6 \"C-State Fix\""                                      >>"${TMP_PATH}/menu"
   echo "7 \"Show user Cmdline\""                                >>"${TMP_PATH}/menu"
-  echo "8 \"Show Model/Build Cmdline\""                         >>"${TMP_PATH}/menu"
   echo "9 \"Kernelpanic Behavior\""                             >>"${TMP_PATH}/menu"
   # Loop menu
   while true; do
@@ -406,14 +405,6 @@ function cmdlineMenu() {
           --aspect 18 --msgbox "${ITEMS}" 0 0
         ;;
       8)
-        ITEMS=""
-        while IFS=': ' read -r KEY VALUE; do
-          ITEMS+="${KEY}: ${VALUE}\n"
-        done <<<$(readModelMap "${MODEL}" "productvers.[${PRODUCTVER}].cmdline")
-        dialog --backtitle "$(backtitle)" --title "Model/Version cmdline" \
-          --aspect 18 --msgbox "${ITEMS}" 0 0
-        ;;
-      9)
         rm -f "${TMP_PATH}/opts"
         echo "5 \"Reboot after 5 seconds\"" >>"${TMP_PATH}/opts"
         echo "0 \"No reboot\"" >>"${TMP_PATH}/opts"
diff --git a/files/initrd/opt/arc/arc.sh b/files/initrd/opt/arc/arc.sh
index 5a6baa2f..95f11d93 100755
--- a/files/initrd/opt/arc/arc.sh
+++ b/files/initrd/opt/arc/arc.sh
@@ -66,6 +66,7 @@ MACSYS="$(readConfigKey "arc.macsys" "${USER_CONFIG_FILE}")"
 ODP="$(readConfigKey "arc.odp" "${USER_CONFIG_FILE}")"
 HDDSORT="$(readConfigKey "arc.hddsort" "${USER_CONFIG_FILE}")"
 KERNEL="$(readConfigKey "arc.kernel" "${USER_CONFIG_FILE}")"
+RD_COMPRESSED="$(readConfigKey "rd-compressed" "${USER_CONFIG_FILE}")"
 USBMOUNT="$(readConfigKey "arc.usbmount" "${USER_CONFIG_FILE}")"
 ARCIPV6="$(readConfigKey "arc.ipv6" "${USER_CONFIG_FILE}")"
 EMMCBOOT="$(readConfigKey "arc.emmcboot" "${USER_CONFIG_FILE}")"
@@ -266,7 +267,7 @@ function arcVersion() {
   writeConfigKey "synoinfo" "{}" "${USER_CONFIG_FILE}"
   while IFS=': ' read -r KEY VALUE; do
     writeConfigKey "synoinfo.\"${KEY}\"" "${VALUE}" "${USER_CONFIG_FILE}"
-  done <<<$(readModelMap "${MODEL}" "productvers.[${PRODUCTVER}].synoinfo")
+  done <<<$(readModelMap "${MODEL}" "synoinfo")
   # Reset modules
   writeConfigKey "modules" "{}" "${USER_CONFIG_FILE}"
   while read -r ID DESC; do
@@ -390,9 +391,11 @@ function arcSettings() {
   # Select Addons
   addonSelection
   # Check for DT and HBA/Raid Controller
-  if [[ "${DT}" = "true" && "${EXTERNALCONTROLLER}" = "true" ]]; then
-    dialog --backtitle "$(backtitle)" --title "Arc Warning" \
-      --msgbox "WARN: You use a HBA/Raid Controller and selected a DT Model.\nThis is still an experimental Feature." 0 0
+  if [ ! "${MODEL}" = "SA6400" ]; then
+    if [[ "${DT}" = "true" && "${EXTERNALCONTROLLER}" = "true" ]]; then
+      dialog --backtitle "$(backtitle)" --title "Arc Warning" \
+        --msgbox "WARN: You use a HBA/Raid Controller and selected a DT Model.\nThis is still an experimental Feature." 0 0
+    fi
   fi
   # Check for more then 8 Ethernet Ports
   DEVICENIC="$(readConfigKey "device.nic" "${USER_CONFIG_FILE}")"
@@ -881,7 +884,7 @@ function arcAutomated() {
   writeConfigKey "synoinfo" "{}" "${USER_CONFIG_FILE}"
   while IFS=': ' read -r KEY VALUE; do
     writeConfigKey "synoinfo.\"${KEY}\"" "${VALUE}" "${USER_CONFIG_FILE}"
-  done <<<$(readModelMap "${MODEL}" "productvers.[${PRODUCTVER}].synoinfo")
+  done <<<$(readModelMap "${MODEL}" "synoinfo")
   # Reset modules
   writeConfigKey "modules" "{}" "${USER_CONFIG_FILE}"
   while read -r ID DESC; do
@@ -1184,6 +1187,7 @@ else
         echo "O \"Official Driver Priority: \Z4${ODP}\Zn \" "                                 >>"${TMP_PATH}/menu"
         echo "E \"eMMC Boot Support: \Z4${EMMCBOOT}\Zn \" "                                   >>"${TMP_PATH}/menu"
         echo "o \"Switch MacSys: \Z4${MACSYS}\Zn \" "                                         >>"${TMP_PATH}/menu"
+        echo "W \"DSM RD Compression: \Z4${RD_COMPRESSED}\Zn \" "                             >>"${TMP_PATH}/menu"
         echo "u \"Switch LKM version: \Z4${LKM}\Zn \" "                                       >>"${TMP_PATH}/menu"
       fi
     fi
@@ -1357,6 +1361,12 @@ else
         BUILDDONE="$(readConfigKey "arc.builddone" "${USER_CONFIG_FILE}")"
         NEXT="o"
         ;;
+      W) [ "${RD_COMPRESSED}" = "true" ] && RD_COMPRESSED='false' || RD_COMPRESSED='true'
+        writeConfigKey "rd-compressed" "${RD_COMPRESSED}" "${USER_CONFIG_FILE}"
+        writeConfigKey "arc.builddone" "false" "${USER_CONFIG_FILE}"
+        BUILDDONE="$(readConfigKey "arc.builddone" "${USER_CONFIG_FILE}")"
+        NEXT="W"
+        ;;
       u) [ "${LKM}" = "prod" ] && LKM='dev' || LKM='prod'
         writeConfigKey "lkm" "${LKM}" "${USER_CONFIG_FILE}"
         writeConfigKey "arc.builddone" "false" "${USER_CONFIG_FILE}"
diff --git a/files/initrd/opt/arc/boot.sh b/files/initrd/opt/arc/boot.sh
index ff8b886c..e88a509e 100755
--- a/files/initrd/opt/arc/boot.sh
+++ b/files/initrd/opt/arc/boot.sh
@@ -97,19 +97,6 @@ CMDLINE['vid']="${VID}"
 CMDLINE['pid']="${PID}"
 CMDLINE['sn']="${SN}"
 
-NIC=0
-for ETH in ${ETHX}; do
-  MAC="$(readConfigKey "mac.${ETH}" "${USER_CONFIG_FILE}")"
-  [ -n "${MAC}" ] && NIC=$((${NIC} + 1)) && CMDLINE["mac${NIC}"]="${MAC}"
-done
-CMDLINE['netif_num']="${NIC}"
-
-if [ "${MACSYS}" = "hardware" ]; then
-  CMDLINE['skip_vender_mac_interfaces']="0,1,2,3,4,5,6,7"
-elif [ "${MACSYS}" = "custom" ]; then
-  CMDLINE['skip_vender_mac_interfaces']="$(seq -s, $((${NIC} + 1)) 7)"
-fi
-
 # set fixed cmdline
 if grep -q "force_junior" /proc/cmdline; then
   CMDLINE['force_junior']=""
@@ -126,40 +113,73 @@ fi
 if [ ! "${BUS}" = "usb" ]; then
   SZ=$(blockdev --getsz ${LOADER_DISK} 2>/dev/null)  # SZ=$(cat /sys/block/${LOADER_DISK/\/dev\//}/size)
   SS=$(blockdev --getss ${LOADER_DISK} 2>/dev/null)  # SS=$(cat /sys/block/${LOADER_DISK/\/dev\//}/queue/hw_sector_size)
-  SIZE=$((${SZ} * ${SS} / 1024 / 1024 + 10))
+  SIZE=$((${SZ:-0} * ${SS:-0} / 1024 / 1024 + 10))
   # Read SATADoM type
   DOM="$(readModelKey "${MODEL}" "dom")"
   CMDLINE['synoboot_satadom']="${DOM}"
   CMDLINE['dom_szmax']="${SIZE}"
 fi
+
 CMDLINE['panic']="${KERNELPANIC:-0}"
 CMDLINE['console']="ttyS0,115200n8"
 #CMDLINE['no_console_suspend']="1"
 CMDLINE['consoleblank']="600"
 CMDLINE['earlyprintk']=""
 CMDLINE['earlycon']="uart8250,io,0x3f8,115200n8"
-CMDLINE['root']="/dev/md0"
-
-if [ ! "${MODEL}" = "SA6400" ]; then
-  CMDLINE['elevator']="elevator"
+if [ "${EMMCBOOT}" = "true" ]; then
+  CMDLINE['root']="/dev/mmcblk0p1"
+else
+  CMDLINE['root']="/dev/md0"
 fi
+
+NIC=0
+for ETH in ${ETHX}; do
+  MAC="$(readConfigKey "mac.${ETH}" "${USER_CONFIG_FILE}")"
+  [ -n "${MAC}" ] && NIC=$((${NIC} + 1)) && CMDLINE["mac${NIC}"]="${MAC}"
+done
+CMDLINE['netif_num']="${NIC}"
+
+if [ "${MACSYS}" = "hardware" ]; then
+  CMDLINE['skip_vender_mac_interfaces']="0,1,2,3,4,5,6,7"
+elif [ "${MACSYS}" = "custom" ]; then
+  CMDLINE['skip_vender_mac_interfaces']="$(seq -s, $((${NIC} + 1)) 7)"
+fi
+
 CMDLINE['loglevel']="15"
 CMDLINE['log_buf_len']="32M"
+CMDLINE["HddHotplug"]="1"
+CMDLINE["elevator"]="elevator"
 
 if [ -n "$(ls /dev/mmcblk* 2>/dev/null)" ] && [ ! "${BUS}" = "mmc" ] && [ ! "${EMMCBOOT}" = "true" ]; then
   [ ! "${CMDLINE['modprobe.blacklist']}" = "" ] && CMDLINE['modprobe.blacklist']+=","
   CMDLINE['modprobe.blacklist']+="sdhci,sdhci_pci,sdhci_acpi"
 fi
 
-if [ "$(readModelKey "${MODEL}" "dt")" = "true" ] && ! echo "epyc7002 purley broadwellnkv2" | grep -wq "$(readModelKey "${MODEL}" "platform")"; then
-  [ ! "${CMDLINE['modprobe.blacklist']}" = "" ] && CMDLINE['modprobe.blacklist']+=","
-  CMDLINE['modprobe.blacklist']+="mpt3sas"
+DT="$(readModelKey "${MODEL}" "dt")"
+PLATFORM="$(readModelKey "${MODEL}" "platform")"
+PLATFORM=${PLATFORM:-"unknown"}
+if [ "${DT}" = "true" ]; then
+  CMDLINE["vender_format_version"]="2"
+  CMDLINE["syno_ttyS0"]="serial,0x3f8"
+  CMDLINE["syno_ttyS1"]="serial,0x2f8"
+  if ! echo "epyc7002 purley broadwellnkv2" | grep -wq "${PLATFORM}"; then
+    [ ! "${CMDLINE['modprobe.blacklist']}" = "" ] && CMDLINE['modprobe.blacklist']+=","
+    CMDLINE['modprobe.blacklist']+="mpt3sas"
+  fi
+else
+  CMDLINE["SMBusHddDynamicPower"]="1"
+  CMDLINE["syno_hdd_detect"]="0"
+  CMDLINE["syno_hdd_powerup_seq"]="0"
+  CMDLINE["vender_format_version"]="2"
+fi
+if echo "epyc7002 apollolake geminilake kvmx64" | grep -wq "${PLATFORM}"; then
+  CMDLINE["intel_iommu"]="igfx_off"
+fi
+if echo "purley broadwellnkv2" | grep -wq "${PLATFORM}"; then
+  CMDLINE["SASmodel"]="1"
 fi
 
 # Read cmdline
-while IFS=': ' read -r KEY VALUE; do
-  [ -n "${KEY}" ] && CMDLINE["${KEY}"]="${VALUE}"
-done <<<$(readModelMap "${MODEL}" "productvers.[${PRODUCTVER}].cmdline")
 while IFS=': ' read -r KEY VALUE; do
   [ -n "${KEY}" ] && CMDLINE["${KEY}"]="${VALUE}"
 done <<<$(readConfigMap "cmdline" "${USER_CONFIG_FILE}")
diff --git a/files/initrd/opt/arc/include/modulelist b/files/initrd/opt/arc/include/modulelist
index 78496a83..6f81ff38 100644
--- a/files/initrd/opt/arc/include/modulelist
+++ b/files/initrd/opt/arc/include/modulelist
@@ -12,6 +12,15 @@ N kvm-intel.ko
 N kvm-amd.ko
 N kvm.ko
 
+# sensors
+N coretemp.ko
+N k10temp.ko
+N it87.ko
+N adt7470.ko
+N adt7475.ko
+N nct6683.ko
+N nct6775.ko
+
 # rndis
 F mii.ko
 F cdc_ether.ko
diff --git a/files/initrd/opt/arc/init.sh b/files/initrd/opt/arc/init.sh
index 6d1e8c21..96ce2aaf 100755
--- a/files/initrd/opt/arc/init.sh
+++ b/files/initrd/opt/arc/init.sh
@@ -42,6 +42,7 @@ initConfigKey "zimage-hash" "" "${USER_CONFIG_FILE}"
 initConfigKey "ramdisk-hash" "" "${USER_CONFIG_FILE}"
 initConfigKey "cmdline" "{}" "${USER_CONFIG_FILE}"
 initConfigKey "synoinfo" "{}" "${USER_CONFIG_FILE}"
+initConfigKey "rd-compressed" "false" "${USER_CONFIG_FILE}"
 initConfigKey "addons" "{}" "${USER_CONFIG_FILE}"
 initConfigKey "modules" "{}" "${USER_CONFIG_FILE}"
 initConfigKey "arc" "{}" "${USER_CONFIG_FILE}"
diff --git a/files/initrd/opt/arc/ramdisk-patch.sh b/files/initrd/opt/arc/ramdisk-patch.sh
index 394f28b5..8ef4141d 100755
--- a/files/initrd/opt/arc/ramdisk-patch.sh
+++ b/files/initrd/opt/arc/ramdisk-patch.sh
@@ -37,6 +37,7 @@ PLATFORM="$(readModelKey "${MODEL}" "platform")"
 HDDSORT="$(readConfigKey "arc.hddsort" "${USER_CONFIG_FILE}")"
 USBMOUNT="$(readConfigKey "arc.usbmount" "${USER_CONFIG_FILE}")"
 KERNEL="$(readConfigKey "kernel" "${USER_CONFIG_FILE}")"
+RD_COMPRESSED="$(readConfigKey "rd-compressed" "${USER_CONFIG_FILE}")"
 
 # Check if DSM Version changed
 . "${RAMDISK_PATH}/etc/VERSION"
@@ -45,7 +46,6 @@ KERNEL="$(readConfigKey "kernel" "${USER_CONFIG_FILE}")"
 PRODUCTVERDSM="${majorversion}.${minorversion}"
 PRODUCTVER="$(readConfigKey "productver" "${USER_CONFIG_FILE}")"
 KVER="$(readModelKey "${MODEL}" "productvers.[${PRODUCTVER}].kver")"
-RD_COMPRESSED="$(readModelKey "${MODEL}" "productvers.[${PRODUCTVER}].rd-compressed")"
 # Read new PAT Info from Config
 PAT_URL="$(readConfigKey "arc.paturl" "${USER_CONFIG_FILE}")"
 PAT_HASH="$(readConfigKey "arc.pathash" "${USER_CONFIG_FILE}")"
@@ -90,10 +90,17 @@ while IFS=': ' read -r KEY VALUE; do
 done <<<$(readConfigMap "modules" "${USER_CONFIG_FILE}")
 
 # Patches (diff -Naru OLDFILE NEWFILE > xxx.patch)
-while read -r PE; do
+PATCHS=()
+PATCHS+=("ramdisk-etc-rc-*.patch")
+PATCHS+=("ramdisk-init-script-v${KVER:0:1}-*.patch")
+PATCHS+=("ramdisk-post-init-script-*.patch")
+PATCHS+=("ramdisk-disable-root-pwd-*.patch")
+PATCHS+=("ramdisk-disable-disabled-ports-*.patch")
+for PE in ${PATCHS[@]}; do
   RET=1
   echo "Patching with ${PE}" >"${LOG_FILE}"
   for PF in $(ls ${PATCH_PATH}/${PE} 2>/dev/null); do
+    echo -n "."
     echo "Patching with ${PF}" >>"${LOG_FILE}"
     (
       cd "${RAMDISK_PATH}"
@@ -103,7 +110,7 @@ while read -r PE; do
     [ ${RET} -eq 0 ] && break
   done
   [ ${RET} -ne 0 ] && exit 1
-done <<<$(readModelArray "${MODEL}" "productvers.[${PRODUCTVER}].patch")
+done
 
 # Patch /etc/synoinfo.conf
 # Add serial number to synoinfo.conf, to help to recovery a installed DSM
diff --git a/scripts/func.sh b/scripts/func.sh
index 3171e238..4c7259c4 100755
--- a/scripts/func.sh
+++ b/scripts/func.sh
@@ -227,7 +227,7 @@ function repackInitrd() {
   [ -f "${OUTPUT_PATH}" ] && rm -rf "${OUTPUT_PATH}"
   (
     cd "${RDXZ_PATH}"
-    sudo find . 2>/dev/null | sudo cpio -o -H newc -R root:root | xz --check=crc32 >"${OUTPUT_PATH}"
+    sudo find . 2>/dev/null | sudo cpio -o -H newc -R root:root | xz -9 --check=crc32 >"${OUTPUT_PATH}"
   ) || true
   sudo rm -rf "${RDXZ_PATH}"
 }