--- /etc/mkinitramfs/initramfs.conf	2005-12-24 18:22:39.000000000 +0100
+++ /opt/ltsp/powerpc/etc/mkinitramfs/initramfs.conf	2005-12-29 13:46:26.000000000 +0100
@@ -20,7 +20,7 @@
 BOOT=local
 
 #
-# MODULES: [ most | dep | list ]
+# MODULES: [ most | dep | list | noblock ]
 #
 # most - Add all framebuffer, acpi, filesystem, and harddrive drivers.
 #
@@ -28,7 +28,9 @@
 #
 # list - Only include modules from the 'additional modules' list
 #
-MODULES=most
+# noblock - Same as the most option but supress blockdevice drivers for netboot
+
+MODULES=noblock
 
 #
 # NFS Section of the config.
--- /usr/sbin/mkinitramfs	2005-12-07 17:25:10.000000000 +0100
+++ /opt/ltsp/powerpc/usr/sbin/mkinitramfs	2005-12-29 13:30:21.000000000 +0100
@@ -112,6 +112,10 @@
 	auto_add_modules
 fi
 
+if [ "${MODULES}" = "noblock" ]; then
+	noblock_add_modules
+fi
+
 # Have to do each file, because cpio --dereference doesn't recurse down
 # symlinks.
 
--- /usr/share/initramfs-tools/hook-functions	2005-10-04 05:20:52.000000000 +0200
+++ /opt/ltsp/powerpc/usr/share/initramfs-tools/hook-functions	2005-12-29 13:33:42.000000000 +0100
@@ -155,6 +155,26 @@
 
 }
 
+# Modules for netbooting with nfs root and no block devices
+noblock_add_modules()
+{
+	# base
+	for x in md raid0 raid1 raid5 raid6 ehci-hcd ohci-hcd uhci-hcd usbhid usb-storage ext2 ext3 isofs jfs nfs reiserfs xfs af_packet dm_mod; do
+		manual_add_modules ${x}
+	done
+
+	# Ethernet
+	for x in 3c59x 8139cp 8139too 8390 b44 bmac bnx2 defxx dl2k e1000 e100 epic100 eql fealnx famachi forcedeth hp100 mace mv643xx_eth natsemi ne2k-pci netconsole ns83820 pcnet32 r8169 s2io sis900 skge slhc starfire sundance sungem sungem_phy sunhme tg3 tlan de2104x de4x5 dmfe tulip winbond-840 xircom_cb xircom_tulip_cb typhon via-rhine via-velocity yellowfin; do
+		manual_add_modules ${x}
+	done
+
+	# i2o
+	for x in i2o_block; do
+		manual_add_modules ${x}
+	done
+
+}
+
 usage()
 {
 	cat >&2 << EOF