diff --git a/fill-disk.sh b/fill-disk.sh
index 2895f957e8b..a09b3bc5444 100755
--- a/fill-disk.sh
+++ b/fill-disk.sh
@@ -332,7 +332,6 @@ cat > $root/boot/grub/menu.lst << GRUBEND
 default=0
 timeout=5
 title NixOS
-        root (hd0,0)
         kernel @kernel@/vmlinuz root=$device
 GRUBEND
 
@@ -348,6 +347,7 @@ echo copying install log
 
 cp /tmp/install-log $root/root
 
+# bizar. busybox umount doesn't like things with --bind it seems.
 echo umounting filesystem
 
 umount $root/cdrom
diff --git a/make-disk.sh b/make-disk.sh
index 0710bf4aee2..3b392115c6a 100755
--- a/make-disk.sh
+++ b/make-disk.sh
@@ -47,9 +47,11 @@ storeExpr=$($NIX/nix-store -r $(echo '(import ./pkgs.nix).boot' | $NIX/nix-insta
 
 kernelscripts=$($NIX/nix-store -r $(echo '(import ./pkgs.nix).kernelscripts' | $NIX/nix-instantiate -))
 
+mkinitrd=$($NIX/nix-store -r $(echo '(import ./pkgs.nix).mkinitrd' | $NIX/nix-instantiate -))
+
 ### make NAR files for everything we want to install and some more. Make sure
 ### the right URL is in there, so specify /cdrom and not cdrom
-$NIX/nix-push --copy $archivesDir $manifest --target file:///cdrom $storeExpr $($NIX/nix-store -r $(echo '(import ./pkgs.nix).kernel' | $NIX/nix-instantiate -)) $kernelscripts
+$NIX/nix-push --copy $archivesDir $manifest --target file:///cdrom $storeExpr $($NIX/nix-store -r $(echo '(import ./pkgs.nix).kernel' | $NIX/nix-instantiate -)) $kernelscripts $mkinitrd
 #$NIX/nix-push --copy $archivesDir2 $manifest --target http://losser.labs.cs.uu.nl/~armijn/.nix $storeExpr $($NIX/nix-store -r $(echo '(import ./pkgs.nix).kernel' | $NIX/nix-instantiate -)) $kernelscripts
 
 # Location of sysvinit?
@@ -80,7 +82,7 @@ dhcp=$($NIX/nix-store -r $(echo '(import ./pkgs.nix).dhcpWrapper' | $NIX/nix-ins
 #combideps=$($NIX/nix-store -qR $nix $utillinux $gnugrep $grub $gzip $findutils)
 combideps=$($NIX/nix-store -qR $nix $busybox $grub $findutils $modutils $dhcp)
 
-for i in $storeExpr
+for i in $storeExpr $mkinitrd
 do
   echo $i >> $narStorePaths
 done
diff --git a/pkgs.nix b/pkgs.nix
index 5f70904f92b..41efb92c99e 100644
--- a/pkgs.nix
+++ b/pkgs.nix
@@ -6,7 +6,7 @@ rec {
     openssh binutils nixStatic strace shadowutils iputils gnumake curl gnused
     gnutar gnugrep gzip mingettyWrapper grubWrapper syslinux parted
     module_init_tools module_init_toolsStatic dhcpWrapper man nano eject
-    sysklogd mktemp cdrtools cpio busybox;
+    sysklogd mktemp cdrtools cpio busybox mkinitrd;
 
   boot = (import ./boot) {
     inherit stdenv bash coreutils findutilsWrapper utillinux sysvinit
@@ -23,5 +23,5 @@ rec {
   #  nix = nixUnstable;
   #};
 
-  everything = [boot sysvinit sysklogd kernelscripts kernel];
+  everything = [boot sysvinit sysklogd kernelscripts kernel mkinitrd];
 }