InputStream in = new FileInputStream("U://test.txt");  // примонтированный диск
		System.out.println("Тест");		
		OutputStream out = new FileOutputStream("С://SQLRESTORESTAGE//1.dat"); 
		byte[] buffer = new byte[16904]; 
		int read = 0; 
		while  (in.read(buffer) > 0 ) ; 
		{
		        	out.write(buffer, 0, read);				 
		        	System.out.println("записали");
		}
		in.close(); 
		out.close(); 

public static void main(String[] args) throws IOException {

		File src = new File ("U://test.txt");
		File des = new File ("С://SQLRESTORESTAGE//1.dat");
		InputStream in = new FileInputStream(src);
		OutputStream out = new FileOutputStream(dest);
	
		System.out.println("Тест");		

		byte[] buffer = new byte[1024]; 
		int read = 0; 
		while ((read = in.read(buffer)) > 0)  
		{
		        	out.write(buffer, 0, read);				 
		        	System.out.println("записали");
		}
		in.close(); 
		out.close(); 
		}

Exception in thread "main" java.io.FileNotFoundException: С:\SQLRESTORESTAGE\1.dat (The system cannot find the path specified)
	at java.io.FileOutputStream.open(Native Method)
	at java.io.FileOutputStream.<init>(Unknown Source)
	at java.io.FileOutputStream.<init>(Unknown Source)
	at smb.main(smb.java:44)

public static void main(String[] args) throws IOException {
		File src = new File ("U://test.txt");
		File dest = new File ("С://SQLRESTORESTAGE//1.dat");
		dest.getParentFile().mkdirs();
		InputStream in = new FileInputStream(src);
		OutputStream out = new FileOutputStream(dest);
		System.out.println("Тест");		
		 
		byte[] buffer = new byte[1024]; 
		int read = 0; 
		while ((read = in.read(buffer)) > 0)  
		{
		        	out.write(buffer, 0, read);				 
		        	System.out.println("записали");
		}
		in.close(); 
		out.close(); 
	}

Exception in thread "main" java.io.FileNotFoundException: С:\SQLRESTORESTAGE\1.dat (The system cannot find the path specified)
	at java.io.FileOutputStream.open(Native Method)
	at java.io.FileOutputStream.<init>(Unknown Source)
	at java.io.FileOutputStream.<init>(Unknown Source)
	at smb.main(smb.java:46)

xcopy /?

xcopy /?

Microsoft Windows [Version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.

H:\>xcopy U:\test.txt c:\sqlrestorestage
U:\test.txt
1 File(s) copied

H:\>