diff --git a/cdrom/rc.cdroot b/cdrom/rc.cdroot
index c0c7e31614be8980bc554e822bd4d2dddb33cec4..b8259078297f50d7e205be205cf3f60aecf1afe1 100644
--- a/cdrom/rc.cdroot
+++ b/cdrom/rc.cdroot
@@ -49,7 +49,7 @@ chkerr() {
 #
 # Create a real /tmp
 #
-/sbin/mount_mfs -s 8192 -b 8192 -f 1024 -i 1024 -T minimum dummy /tmp
+/sbin/mount_mfs -s 8192 -b 8192 -f 1024 -i 1024 -c 16 -T minimum dummy /tmp
 chkerr $? "MFS mount on /tmp"
 
 #
@@ -58,7 +58,7 @@ chkerr $? "MFS mount on /tmp"
 /usr/site/bin/hier cp /etc /tmp/etc
 chkerr $? "hier cp /etc to /tmp/etc"
 
-/sbin/mount_mfs -s 8192 -b 8192 -f 1024 -T minimum dummy /etc
+/sbin/mount_mfs -s 8192 -b 8192 -f 1024 -c 16 -T minimum dummy /etc
 chkerr $? "MFS mount on /etc"
 
 /usr/site/bin/hier cp /tmp/etc /etc
@@ -73,7 +73,7 @@ chkerr $? "rm -rf /tmp/etc"
 /usr/site/bin/hier cp /var /tmp/var
 chkerr $? "hier cp /var to /tmp/var"
 
-/sbin/mount_mfs -s 8192 -b 8192 -f 1024 -T minimum dummy /var
+/sbin/mount_mfs -s 8192 -b 8192 -f 1024 -c 16 -T minimum dummy /var
 chkerr $? "MFS mount on /var"
 
 /usr/site/bin/hier cp /tmp/var /var
@@ -88,7 +88,7 @@ chkerr $? "rm -rf /tmp/var"
 /usr/site/bin/hier cp /dev /tmp/dev
 chkerr $? "hier cp /dev to /tmp/dev"
 
-/sbin/mount_mfs -s 8192 -b 8192 -f 1024 -i 1024 -T minimum dummy /dev
+/sbin/mount_mfs -s 8192 -b 8192 -f 1024 -i 1024 -c 16 -T minimum dummy /dev
 chkerr $? "MFS mount on /dev"
 
 /usr/site/bin/hier cp /tmp/dev /dev