diff --git a/sys/src/cmd/unix/mbrfix.c b/sys/src/cmd/unix/mbrfix.c
deleted file mode 100644
index 2b32de5cb..000000000
--- a/sys/src/cmd/unix/mbrfix.c
+++ /dev/null
@@ -1,196 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <stdarg.h>
-#include <sys/types.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <string.h>
-
-typedef unsigned char uchar;
-typedef unsigned int uint;
-typedef unsigned long long vlong;
-
-
-enum {
-	Sectsz = 0x200,
-	Psectsz = 11,
-	Pclustsc = 13,
-	Presvd = 14,
-	Pnumfat = 16,
-	Pfatsz = 22,
-	Pfatsz32 = 36,
-	Pvolid = 67,
-};
-
-int
-readn(int f, void *av, int n)
-{
-	char *a;
-	int m, t;
-	a = av;
-	t = 0;
-	while(t < n){
-		m = read(f, a+t, n-t);
-		if(m <= 0){
-			if(t == 0)
-				return m;
-			break;
-		}
-		t += m;
-	}
-	return t;
-}
-
-void
-sysfatal(char *fmt, ...)
-{
-	va_list va;
-	va_start(va, fmt);
-	vfprintf(stderr, fmt, va);
-	va_end(va);
-	fprintf(stderr, "\n");
-	exit(1);
-}
-
-void
-readsect(int fd, uint n, void *data)
-{
-	loff_t off;
-
-	off = (loff_t) n * Sectsz;
-	if(llseek(fd, off, SEEK_SET) != off)
-		sysfatal("seek to sector 0x%x failed", n);
-	if(readn(fd, data, Sectsz) != Sectsz)
-		sysfatal("short read: %m");
-}
-
-void
-writesect(int fd, uint n, void *data)
-{
-	loff_t off;
-
-	off = (loff_t) n * Sectsz;
-	if(llseek(fd, off, SEEK_SET) != off)
-		sysfatal("seek to sector 0x%x failed", n);
-	if(write(fd, data, Sectsz) != Sectsz)
-		sysfatal("short write: %m");
-}
-
-uint
-getulong(uchar *s)
-{
-	return s[0] | (s[1] << 8) | (s[2] << 16) | (s[3] << 24);
-}
-
-void
-putulong(uchar *s, uint n)
-{
-	*s++ = n & 0xff;
-	*s++ = (n >> 8) & 0xff;
-	*s++ = (n >> 16) & 0xff;
-	*s++ = (n >> 24) & 0xff;
-}
-
-
-uint
-getushort(uchar *s)
-{
-	return s[0] | (s[1] << 8);
-}
-
-int
-checksig(uchar *s)
-{
-	return s[0x1fe] == 0x55 && s[0x1ff] == 0xaa;
-}
-
-void
-fixpbs(uchar *pbs, uchar *pbs9, uint lba)
-{
-	uint a;
-	uint fatsz, resvd, numfat;
-
-	numfat = pbs[Pnumfat];
-	fatsz = getushort(&pbs[Pfatsz]);
-	if(fatsz == 0)
-		fatsz = getulong(&pbs[Pfatsz32]);
-	resvd = getushort(&pbs[Presvd]);
-
-	a = pbs9[1] + 2;
-	memcpy(pbs, pbs9, 3);
-	memcpy(pbs+a, pbs9+a, Sectsz-a-2);
-	a = lba + numfat * fatsz + resvd;
-	printf("Xroot=%x\n", a);
-	putulong(&pbs[Pvolid], a);
-}
-
-
-int
-main(int argc, char *argv[])
-{
-	int dev, fd, i;
-	uchar mbr9[Sectsz], pbs9[Sectsz];
-	uchar mbr[Sectsz], pbs[Sectsz];
-	uint lba;
-	int part, want;
-	char *mbrfn, *pbsfn, *devfn;
-
-	if(argc < 4)
-		sysfatal("usage: <device> <mbrfile> <pbsfile> [part]");
-	devfn = argv[1];
-	mbrfn = argv[2];
-	pbsfn = argv[3];
-	want = argc >= 5 ? atoi(argv[4]) : -1;
-	part = -1;
-
-	dev = open(devfn, O_RDWR);
-	if(dev < 0)
-		sysfatal("%s: %m", devfn);
-
-	if((fd = open(mbrfn, O_RDONLY)) < 0)
-		sysfatal("%s: %m", mbrfn);
-	if(readn(fd, mbr9, Sectsz) < 3)
-		sysfatal("%s: too short", mbrfn);
-	close(fd);
-
-	fd = open(pbsfn, O_RDONLY);
-	if(fd < 0)
-		sysfatal("%s: %m", pbsfn);
-	if(readn(fd, pbs9, Sectsz) < 3)
-		sysfatal("%s: too short", pbsfn);
-	if(pbs9[0] != 0xeb)
-		sysfatal("first byte of pbs not a short jump");
-	close(fd);
-
-	readsect(dev, 0, mbr);
-	if(!checksig(mbr))
-		sysfatal("sector 0 is missing signature");
-	for(i=0; i<4; i++){
-		if(mbr[0x1be + i*16] == 0x80 && (part == -1 || i == want))
-			part = i;
-	}
-	if(part == -1)
-		sysfatal("no bootable partitions found");
-	if(want != -1 && part != want)
-		sysfatal("partition %d is not bootable", want);
-
-	lba = getulong(&mbr[0x1be + part*16 + 8]);
-	if(lba == 0)
-		sysfatal("partition %d has zero LBA", part);
-
-	readsect(dev, lba, pbs);
-	if(!checksig(pbs))
-		sysfatal("partition %d (LBA=0x%x) is missing signaure", part, lba);
-	if(getushort(&pbs[Psectsz]) != 512)
-		sysfatal("sector size not 512");
-
-	printf("using partition %d, LBA=0x%x\n", part, lba);
-	memcpy(mbr, mbr9, 446);
-	fixpbs(pbs, pbs9, lba);
-	
-	writesect(dev, 0, mbr);
-	writesect(dev, lba, pbs);
-	
-	close(dev);
-	return 0;
-}