diff --git a/headers/os/support/DataIO.h b/headers/os/support/DataIO.h
deleted file mode 100644
index f64bd7f74a..0000000000
--- a/headers/os/support/DataIO.h
+++ /dev/null
@@ -1,201 +0,0 @@
-//------------------------------------------------------------------------------
-//	Copyright (c) 2001-2002, OpenBeOS
-//
-//	Permission is hereby granted, free of charge, to any person obtaining a
-//	copy of this software and associated documentation files (the "Software"),
-//	to deal in the Software without restriction, including without limitation
-//	the rights to use, copy, modify, merge, publish, distribute, sublicense,
-//	and/or sell copies of the Software, and to permit persons to whom the
-//	Software is furnished to do so, subject to the following conditions:
-//
-//	The above copyright notice and this permission notice shall be included in
-//	all copies or substantial portions of the Software.
-//
-//	THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-//	IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-//	FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-//	AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-//	LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
-//	FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
-//	DEALINGS IN THE SOFTWARE.
-//
-//	File Name:		DataIO.h
-//	Author(s):		Jack Burton (burton666@libero.it)
-//	Description:	Pure virtual BDataIO and BPositioIO classes provide
-//					the protocol for Read()/Write()/Seek().
-//
-//					BMallocIO and BMemoryIO classes implement the protocol,
-//					as does BFile in the Storage Kit.
-//------------------------------------------------------------------------------
-
-#ifndef	_DATA_IO_H
-#define	_DATA_IO_H
-
-// Standard Includes -----------------------------------------------------------
-
-// System Includes -------------------------------------------------------------
-#include <BeBuild.h>
-#include <SupportDefs.h>
-
-// Project Includes ------------------------------------------------------------
-
-// Local Includes --------------------------------------------------------------
-
-// Local Defines ---------------------------------------------------------------
-
-// Globals ---------------------------------------------------------------------
-
-
-// BDataIO Class ---------------------------------------------------------------
-class BDataIO {
-public:
-					BDataIO();
-virtual				~BDataIO();
-
-virtual	ssize_t		Read(void *buffer, size_t size) = 0;
-virtual	ssize_t		Write(const void *buffer, size_t size) =0;
-
-// Private or reserved ----------------------
-private:
-
-virtual	void		_ReservedDataIO1();
-virtual	void		_ReservedDataIO2();
-virtual	void		_ReservedDataIO3();
-virtual	void		_ReservedDataIO4();
-
-#if !_PR3_COMPATIBLE_
-virtual	void		_ReservedDataIO5();
-virtual	void		_ReservedDataIO6();
-virtual	void		_ReservedDataIO7();
-virtual	void		_ReservedDataIO8();
-virtual	void		_ReservedDataIO9();
-virtual	void		_ReservedDataIO10();
-virtual	void		_ReservedDataIO11();
-virtual	void		_ReservedDataIO12();
-#endif
-
-					BDataIO(const BDataIO &);
-		BDataIO		&operator=(const BDataIO &);
-
-		int32		_reserved[2];
-};
-
-// BPositionIO Class -----------------------------------------------------------
-
-class BPositionIO : public BDataIO {
-public:
-					BPositionIO();
-virtual				~BPositionIO();
-
-virtual	ssize_t		Read(void *buffer, size_t size);
-virtual	ssize_t		Write(const void *buffer, size_t size);
-
-virtual	ssize_t		ReadAt(off_t pos, void *buffer, size_t size) = 0;
-virtual	ssize_t		WriteAt(off_t pos, const void *buffer, size_t size) = 0;
-
-virtual off_t		Seek(off_t position, uint32 seek_mode) = 0;
-virtual	off_t		Position() const = 0;
-
-virtual status_t	SetSize(off_t size);
-
-// Private or reserved ----------------------
-private:
-virtual	void		_ReservedPositionIO1();
-virtual	void		_ReservedPositionIO2();
-virtual void		_ReservedPositionIO3();
-virtual void		_ReservedPositionIO4();
-
-#if !_PR3_COMPATIBLE_
-virtual	void		_ReservedPositionIO5();
-virtual	void		_ReservedPositionIO6();
-virtual	void		_ReservedPositionIO7();
-virtual	void		_ReservedPositionIO8();
-virtual	void		_ReservedPositionIO9();
-virtual	void		_ReservedPositionIO10();
-virtual	void		_ReservedPositionIO11();
-virtual	void		_ReservedPositionIO12();
-#endif
-
-		int32		_reserved[2];
-};
-
-// BMallocIO Class -------------------------------------------------------------
-
-class BMallocIO : public BPositionIO {
-public:
-					BMallocIO();
-virtual				~BMallocIO();
-
-virtual	ssize_t		ReadAt(off_t pos, void *buffer, size_t size);
-virtual	ssize_t		WriteAt(off_t pos, const void *buffer, size_t size);
-
-virtual	off_t		Seek(off_t pos, uint32 seek_mode);
-virtual off_t		Position() const;
-virtual status_t	SetSize(off_t size);
-
-		void		SetBlockSize(size_t blocksize);
-
-const	void		*Buffer() const;
-		size_t		BufferLength() const;
-
-// Private or reserved ----------------------
-private:
-
-virtual	void		_ReservedMallocIO1();
-virtual	void		_ReservedMallocIO2();
-
-					BMallocIO(const BMallocIO &);
-		BMallocIO	&operator=(const BMallocIO &);
-
-		size_t		fBlockSize;
-		size_t		fMallocSize;
-		size_t		fLength;
-		char		*fData;
-		off_t		fPosition;
-		int32		_reserved[1];
-};
-
-// BMemoryIO Class -------------------------------------------------------------
-
-class BMemoryIO : public BPositionIO {
-public:
-					BMemoryIO(void *p, size_t len);
-					BMemoryIO(const void *p, size_t len);
-virtual				~BMemoryIO();
-
-virtual	ssize_t		ReadAt(off_t pos, void *buffer, size_t size);
-virtual	ssize_t		WriteAt(off_t pos, const void *buffer, size_t size);
-
-virtual	off_t		Seek(off_t pos, uint32 seek_mode);
-virtual off_t		Position() const;
-
-virtual	status_t	SetSize(off_t size);
-
-// Private or reserved ----------------------
-private:
-virtual	void		_ReservedMemoryIO1();
-virtual	void		_ReservedMemoryIO2();
-
-					BMemoryIO(const BMemoryIO &);
-		BMemoryIO	&operator=(const BMemoryIO &);
-
-		bool		fReadOnly;
-		char		*fBuf;
-		size_t		fLen;
-		size_t		fPhys;
-		size_t		fPos;
-
-		int32		_reserved[1];
-};
-
-//------------------------------------------------------------------------------
-
-#endif // _DATA_IO_H
-
-/*
- * $Log $
- *
- * $Id  $
- *
- */
-