diff -uNr e2fsprogs-1.32/misc/tune2fs.8.in 0_JMGLOV_e2fsprogs-1.32/misc/tune2fs.8.in
--- e2fsprogs-1.32/misc/tune2fs.8.in	2002-10-25 17:31:08.000000000 -0400
+++ 0_JMGLOV_e2fsprogs-1.32/misc/tune2fs.8.in	2003-03-22 13:13:05.000000000 -0500
@@ -8,6 +8,10 @@
 .SH SYNOPSIS
 .B tune2fs
 [
+.B \-b
+.I superblock
+]
+[
 .B \-l
 ]
 [
@@ -87,6 +91,32 @@
 adjusts tunable filesystem parameters on a Linux second extended filesystem.
 .SH OPTIONS
 .TP
+.BI \-b " superblock"
+Instead of using the normal superblock, use an alternative superblock
+specified by 
+.IR superblock .
+This option is normally used when the primary superblock has been
+corrupted.  The location of the backup superblock is dependent on the
+filesystem's blocksize.  For filesystems with 1k blocksizes, a backup
+superblock can be found at block 8193; for filesystems with 2k
+blocksizes, at block 16384; and for 4k blocksizes, at block 32768.  
+.IP
+Additional backup superblocks can be determined by using the 
+.B mke2fs 
+program using the 
+.B \-n
+option to print out where the superblocks were created.   The 
+.B \-b 
+option to 
+.BR mke2fs ,
+which specifies blocksize of the filesystem must be specified in order
+for the superblock locations that are printed out to be accurate.
+.IP
+If an alternative superblock is specified and  
+the filesystem is not opened read-only, e2fsck will make sure that the
+primary superblock is updated appropriately upon completion of the 
+filesystem check.
+.TP
 .BI \-c " max-mount-counts"
 Adjust the maximal mounts count between two filesystem checks.  If 
 .I max-mount-counts
diff -uNr e2fsprogs-1.32/misc/tune2fs.c 0_JMGLOV_e2fsprogs-1.32/misc/tune2fs.c
--- e2fsprogs-1.32/misc/tune2fs.c	2002-10-15 17:44:46.000000000 -0400
+++ 0_JMGLOV_e2fsprogs-1.32/misc/tune2fs.c	2003-03-22 13:06:56.000000000 -0500
@@ -58,6 +58,7 @@
 char * new_label, *new_last_mounted, *new_UUID;
 static int c_flag, C_flag, e_flag, f_flag, g_flag, i_flag, l_flag, L_flag;
 static int m_flag, M_flag, r_flag, s_flag = -1, u_flag, U_flag, T_flag;
+static int b_flag = 0;
 static time_t last_check_time;
 static int print_label;
 static int max_mount_count, mount_count, mount_flags;
@@ -78,9 +79,8 @@
 static void usage(void)
 {
 	fprintf(stderr,
-		_("Usage: %s [-c max-mounts-count] [-e errors-behavior] "
-		  "[-g group]\n"
-		  "\t[-i interval[d|m|w]] [-j] [-J journal-options]\n"
+		_("Usage: %s [-b superblock] [-c max-mounts-count] [-e errors-behavior]\n "
+		  "\t[-g group] [-i interval[d|m|w]] [-j] [-J journal-options]\n"
 		  "\t[-l] [-s sparse-flag] [-m reserved-blocks-percent]\n"
 		  "\t[-o [^]mount-options[,...]] [-r reserved-blocks-count]\n"
 		  "\t[-u user] [-C mount-count] [-L volume-label] "
@@ -462,9 +462,12 @@
 	struct passwd * pw;
 
 	printf("tune2fs %s (%s)\n", E2FSPROGS_VERSION, E2FSPROGS_DATE);
-	while ((c = getopt(argc, argv, "c:e:fg:i:jlm:o:r:s:u:C:J:L:M:O:T:U:")) != EOF)
+	while ((c = getopt(argc, argv, "b:c:e:fg:i:jlm:o:r:s:u:C:J:L:M:O:T:U:")) != EOF)
 		switch (c)
 		{
+      case 'b':
+				b_flag = atoi(optarg);
+        break;
 			case 'c':
 				max_mount_count = strtol (optarg, &tmp, 0);
 				if (*tmp || max_mount_count > 16000) {
@@ -712,15 +715,27 @@
 	else
 		parse_tune2fs_options(argc, argv);
 	
-	retval = ext2fs_open (device_name, open_flag, 0, 0,
-			      unix_io_manager, &fs);
-        if (retval) {
-		com_err (program_name, retval, _("while trying to open %s"),
-			 device_name);
-		fprintf(stderr,
-			_("Couldn't find valid filesystem superblock.\n"));
-		exit(1);
-	}
+  if (b_flag) {
+		int blocksize;
+		for (blocksize = EXT2_MIN_BLOCK_SIZE;
+		     blocksize <= EXT2_MAX_BLOCK_SIZE; blocksize *= 2) {
+			retval = ext2fs_open (device_name, open_flag, b_flag, blocksize,
+                            unix_io_manager, &fs);
+			if (!retval)
+				break;
+		}
+	} else {
+    retval = ext2fs_open (device_name, open_flag, 0, 0,
+                          unix_io_manager, &fs);
+    if (retval) {
+      com_err (program_name, retval, _("while trying to open %s"),
+               device_name);
+      fprintf(stderr,
+              _("Couldn't find valid filesystem superblock.\n"));
+      exit(1);
+    }
+  }
+  
 	sb = fs->super;
 	if (print_label) {
 		/* For e2label emulation */