Index: uspace/srv/fs/minixfs/mfs.h
===================================================================
--- uspace/srv/fs/minixfs/mfs.h	(revision 9cd199c4cec505df134467c981f448ba1e1cde39)
+++ uspace/srv/fs/minixfs/mfs.h	(revision 10eb754f880f159d4295e63283be1a818e3dff42)
@@ -91,4 +91,5 @@
 	int ino_per_block;
 	int dirsize;
+	int itable_off;
 	unsigned max_name_len;
 	bool long_names;
@@ -155,4 +156,7 @@
 mfs2_read_inode_raw(const struct mfs_instance *instance, uint32_t inum);
 
+extern int
+put_inode(struct mfs_node *mnode);
+
 /*mfs_read.c*/
 int read_map(uint32_t *b, const struct mfs_node *mnode, const uint32_t pos);
Index: uspace/srv/fs/minixfs/mfs_inode.c
===================================================================
--- uspace/srv/fs/minixfs/mfs_inode.c	(revision 9cd199c4cec505df134467c981f448ba1e1cde39)
+++ uspace/srv/fs/minixfs/mfs_inode.c	(revision 10eb754f880f159d4295e63283be1a818e3dff42)
@@ -38,6 +38,9 @@
 #include "mfs_utils.h"
 
-struct mfs_ino_info *mfs_read_inode_raw(const struct mfs_instance *instance, 
-					uint16_t inum)
+static int
+mfs_write_inode_raw(struct mfs_node *mnode);
+
+struct mfs_ino_info *
+mfs_read_inode_raw(const struct mfs_instance *instance, uint16_t inum)
 {
 	struct mfs_inode *ino = NULL;
@@ -46,6 +49,9 @@
 	block_t *b;
 	int i;
+
+	sbi = instance->sbi;
+	assert(sbi);
 	
-	const int ino_off = inum % V1_INODES_PER_BLOCK;
+	const int ino_off = inum % sbi->ino_per_block;
 	const size_t ino_size = sizeof(struct mfs_inode);
 
@@ -56,11 +62,8 @@
 		goto out_err;
 
-	sbi = instance->sbi;
-	assert(sbi);
-
-	const int itable_off = 2 + sbi->ibmap_blocks + sbi->zbmap_blocks;
+	const int itable_off = sbi->itable_off;
 
 	if (block_get(&b, instance->handle,
-			itable_off + inum / V1_INODES_PER_BLOCK,
+			itable_off + inum / sbi->ino_per_block,
 			BLOCK_FLAGS_NONE) != EOK)
 		goto out_err;
@@ -94,6 +97,6 @@
 }
 
-struct mfs_ino_info *mfs2_read_inode_raw(const struct mfs_instance *instance,
-					uint32_t inum)
+struct mfs_ino_info *
+mfs2_read_inode_raw(const struct mfs_instance *instance, uint32_t inum)
 {
 	struct mfs2_inode *ino = NULL;
@@ -114,9 +117,9 @@
 	assert(sbi);
 
-	const int itable_off = 2 + sbi->ibmap_blocks + sbi->zbmap_blocks;
-	const int ino_off = inum % V3_INODES_PER_BLOCK(sbi->block_size);
+	const int itable_off = sbi->itable_off;
+	const int ino_off = inum % sbi->ino_per_block;
 
 	if (block_get(&b, instance->handle, 
-		itable_off + inum / V3_INODES_PER_BLOCK(sbi->block_size),
+		itable_off + inum / sbi->ino_per_block,
 			BLOCK_FLAGS_NONE) != EOK)
 		goto out_err;
@@ -153,4 +156,72 @@
 }
 
+int
+put_inode(struct mfs_node *mnode)
+{
+	int rc = EOK;
+
+	assert(mnode);
+	assert(mnode->ino_i);
+
+	if (!mnode->ino_i->dirty)
+		goto out;
+
+	struct mfs_instance *inst = mnode->instance;
+	assert(inst);
+	struct mfs_sb_info *sbi = inst->sbi;
+	assert(sbi);
+
+	if (sbi->fs_version == MFS_VERSION_V1)
+		rc = mfs_write_inode_raw(mnode);
+	else {
+		/*rc = mfs2_write_inode_raw(mnode);*/
+	}
+
+out:
+	return rc;
+}
+
+static int
+mfs_write_inode_raw(struct mfs_node *mnode)
+{
+	int i, r;
+	block_t *b;
+	struct mfs_ino_info *ino_i = mnode->ino_i;
+	struct mfs_sb_info *sbi = mnode->instance->sbi;
+
+	const int itable_off = sbi->itable_off;
+	const int ino_off = ino_i->index % sbi->ino_per_block;
+	const bool native = sbi->native;
+
+	r = block_get(&b, mnode->instance->handle,
+				itable_off + ino_i->index / sbi->ino_per_block,
+				BLOCK_FLAGS_NONE);
+
+	if (r != EOK)
+		goto out;
+
+	struct mfs_inode *ino = b->data;
+	ino += ino_off;
+
+	ino->i_mode = conv16(native, ino_i->i_mode);
+	ino->i_uid = conv16(native, ino_i->i_uid);
+	ino->i_gid = ino_i->i_gid;
+	ino->i_nlinks = ino_i->i_nlinks;
+	ino->i_size = conv32(native, ino_i->i_size);
+	ino->i_mtime = conv32(native, ino_i->i_mtime);
+
+	for (i = 0; i < V1_NR_DIRECT_ZONES; ++i)
+		ino->i_dzone[i] = conv16(native, ino_i->i_dzone[i]);
+	for (i = 0; i < V1_NR_INDIRECT_ZONES; ++i)
+		ino->i_izone[i] = conv16(native, ino_i->i_izone[i]);
+
+	b->dirty = true;
+	block_put(b);
+
+	ino_i->dirty = false;
+out:
+	return r;
+}
+
 /**
  * @}
Index: uspace/srv/fs/minixfs/mfs_ops.c
===================================================================
--- uspace/srv/fs/minixfs/mfs_ops.c	(revision 9cd199c4cec505df134467c981f448ba1e1cde39)
+++ uspace/srv/fs/minixfs/mfs_ops.c	(revision 10eb754f880f159d4295e63283be1a818e3dff42)
@@ -56,4 +56,5 @@
 static aoff64_t mfs_size_get(fs_node_t *node);
 static int mfs_match(fs_node_t **rfn, fs_node_t *pfn, const char *component);
+static int mfs_create_node(fs_node_t **rfn, devmap_handle_t handle, int flags);
 
 static
@@ -76,4 +77,5 @@
 	.index_get = mfs_index_get,
 	.match = mfs_match,
+	.create = mfs_create_node,
 	.plb_get_char = mfs_plb_get_char,
 	.has_children = mfs_has_children,
@@ -191,4 +193,5 @@
 		sbi->nzones = conv32(native, sb3->s_nzones);
 		sbi->block_size = conv16(native, sb3->s_block_size);
+		sbi->ino_per_block = V3_INODES_PER_BLOCK(sbi->block_size);
 		sbi->dirsize = MFS3_DIRSIZE;
 		sbi->max_name_len = MFS3_MAX_NAME_LEN;
@@ -202,4 +205,5 @@
 		sbi->nzones = conv16(native, sb->s_nzones);
 		sbi->block_size = MFS_BLOCKSIZE;
+		sbi->ino_per_block = V1_INODES_PER_BLOCK;
 		if (version == MFS_VERSION_V2)
 			sbi->nzones = conv32(native, sb->s_nzones2);
@@ -208,4 +212,5 @@
 				MFS_MAX_NAME_LEN;
 	}
+	sbi->itable_off = 2 + sbi->ibmap_blocks + sbi->zbmap_blocks;
  
 	free(sb);
@@ -243,4 +248,10 @@
 	struct mfs_node *node = fsnode->data;
 	return node->instance->handle;
+}
+
+static int mfs_create_node(fs_node_t **rfn, devmap_handle_t handle, int flags)
+{
+	mfsdebug("create_node()\n");
+	return ENOTSUP;
 }