diff --git a/README b/README
index 0bd2bf8..a737ce6 100644
--- a/README
+++ b/README
@@ -21,4 +21,23 @@ To test:
 409600 bytes (410 kB) copied, 0.00175839 s, 233 MB/s
 ~/src/simplefs> ./mkfs-simplefs image
 Super block written succesfully
-~/src/simplefs>
+
+# switch to root user (or use with sudo)
+
+linux-okb0:/home/psankar/src/simplefs # insmod simplefs.ko
+linux-okb0:/home/psankar/src/simplefs # dmesg
+[ 2963.323701] Sucessfully registered simplefs
+linux-okb0:/home/psankar/src/simplefs # mount -o loop -t simplefs image /home/psankar/src/simplefs/mount/
+linux-okb0:/home/psankar/src/simplefs # dmesg
+[ 2963.323701] Sucessfully registered simplefs
+[ 2977.453535] The magic number obtained in disk is: [268640275]
+[ 2977.453544] simplefs filesystem of version [1] formatted with a block size of [4096] detected in the device.
+[ 2977.453551] simplefs is succesfully mounted on [/dev/loop1]
+linux-okb0:/home/psankar/src/simplefs # umount mount/
+linux-okb0:/home/psankar/src/simplefs # dmesg
+[ 2963.323701] Sucessfully registered simplefs
+[ 2977.453535] The magic number obtained in disk is: [268640275]
+[ 2977.453544] simplefs filesystem of version [1] formatted with a block size of [4096] detected in the device.
+[ 2977.453551] simplefs is succesfully mounted on [/dev/loop1]
+[ 2994.184508] simplefs superblock is destroyed. Unmount succesful.
+linux-okb0:/home/psankar/src/simplefs # rmmod simplefs.ko
diff --git a/simple.c b/simple.c
index 69c82c2..5ec21d1 100644
--- a/simple.c
+++ b/simple.c
@@ -8,6 +8,7 @@
 #include <linux/init.h>
 #include <linux/module.h>
 #include <linux/fs.h>
+#include <linux/buffer_head.h>
 
 #include "simple.h"
 
@@ -76,6 +77,31 @@ struct inode *simplefs_get_inode(struct super_block *sb,
 int simplefs_fill_super(struct super_block *sb, void *data, int silent)
 {
 	struct inode *inode;
+	struct buffer_head *bh;
+	struct simplefs_super_block *sb_disk;
+
+	bh = (struct buffer_head *)sb_bread(sb, 0);
+
+	sb_disk = (struct simplefs_super_block *)bh->b_data;
+
+	printk(KERN_INFO "The magic number obtained in disk is: [%d]\n",
+	       sb_disk->magic);
+
+	if (unlikely(sb_disk->magic != SIMPLEFS_MAGIC)) {
+		printk(KERN_ERR
+		       "The filesystem that you try to mount is not of type simplefs. Magicnumber mismatch.");
+		return -EPERM;
+	}
+
+	if (unlikely(sb_disk->block_size != SIMPLEFS_DEFAULT_BLOCK_SIZE)) {
+		printk(KERN_ERR
+		       "simplefs seem to be formatted using a non-standard block size.");
+		return -EPERM;
+	}
+
+	printk(KERN_INFO
+	       "simplefs filesystem of version [%d] formatted with a block size of [%d] detected in the device.\n",
+	       sb_disk->version, sb_disk->block_size);
 
 	/* A magic number that uniquely identifies our filesystem type */
 	sb->s_magic = SIMPLEFS_MAGIC;
diff --git a/simple.h b/simple.h
index 1e54c7b..aefea3a 100644
--- a/simple.h
+++ b/simple.h
@@ -7,5 +7,5 @@ struct simplefs_super_block {
 	unsigned int block_size;
 	unsigned int free_blocks;
 
-	char padding[ (4 * 1024) - (4 * sizeof(unsigned int))];
+	char padding[(4 * 1024) - (4 * sizeof(unsigned int))];
 };