diff --git a/sys/arch/mipsco/conf/files.mipsco b/sys/arch/mipsco/conf/files.mipsco
index 780104581cee..701bacfed739 100644
--- a/sys/arch/mipsco/conf/files.mipsco
+++ b/sys/arch/mipsco/conf/files.mipsco
@@ -1,4 +1,4 @@
-#	$NetBSD: files.mipsco,v 1.3 2000/09/29 12:43:14 wdk Exp $
+#	$NetBSD: files.mipsco,v 1.4 2000/10/03 09:38:20 wdk Exp $
 
 #  MIPS Computer Corp -specific configuration info
 
@@ -57,7 +57,7 @@ file dev/clock_subr.c
 file dev/cons.c
 
 # Memory Disk
-file arch/pmax/pmax/md_root.c		memory_disk_hooks
+file dev/md_root.c			memory_disk_hooks
 major { md = 2 }
 
 #
diff --git a/sys/arch/mipsco/mipsco/md_root.c b/sys/arch/mipsco/mipsco/md_root.c
deleted file mode 100644
index 7dad68575a7d..000000000000
--- a/sys/arch/mipsco/mipsco/md_root.c
+++ /dev/null
@@ -1,87 +0,0 @@
-/*	$NetBSD: md_root.c,v 1.1 2000/09/29 12:43:14 wdk Exp $ */
-
-/*
- * Copyright (c) 1996 Christopher G. Demetriou.  All rights reserved.
- * Copyright (c) 1995 Gordon W. Ross
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 3. The name of the author may not be used to endorse or promote products
- *    derived from this software without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
- * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
- * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
- * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
- * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include <sys/cdefs.h>			/* RCS ID & Copyright macro defns */
-
-__KERNEL_RCSID(0, "$NetBSD: md_root.c,v 1.1 2000/09/29 12:43:14 wdk Exp $");
-
-#include <sys/param.h>
-#include <sys/systm.h>
-#include <sys/reboot.h>
-
-#include <dev/md.h>
-
-#include "opt_mdsize.h"
-
-#ifndef MINIROOTSIZE
-#define MINIROOTSIZE 512
-#endif
-
-#define ROOTBYTES (MINIROOTSIZE << DEV_BSHIFT)
-
-/*
- * This array will be patched to contain a file-system image.
- */
-u_int32_t md_root_size = ROOTBYTES;
-char md_root_image[ROOTBYTES] = "|This is the root ramdisk!\n";
-
-/*
- * This is called during autoconfig.
- */
-void
-md_attach_hook(unit, md)
-	int unit;
-	struct md_conf *md;
-{
-
-	if (unit == 0) {
-		/* Setup root ramdisk */
-		md->md_addr = (caddr_t)md_root_image;
-		md->md_size = (size_t)md_root_size;
-		md->md_type = MD_KMEM_FIXED;
-		printf("md%d: internal %dK image area\n", unit,
-		    ROOTBYTES / 1024);
-	}
-}
-
-/*
- * This is called during open (i.e. mountroot)
- */
-void
-md_open_hook(unit, md)
-	int unit;
-	struct md_conf *md;
-{
-
-	if (unit == 0) {
-		/* The root ramdisk only works single-user. */
-		boothowto |= RB_SINGLE;
-	}
-}