Whenever I upgrade the OS on one of my computers or upgrade the computer itself, I always make a manual backup of the data I need to retain. There are many utilities that do this job for you, like User State Migration Tool and Windows Easy Transfer, but none of them give me that warm fuzzy feeling that total manual control provides.

The Robocopy utility, short for Robust File Copy, is one of my all time favorites when it comes to copying large amounts of data. Robocopy used to be part of the Windows Resource Kit, but at least since Windows Vista/Server 2008 it has been part of the base OS installation. This command is what I use to backup my Windows profile, which contains the bulk of my data:

Note: If you decide to copy and use this command, pay special attention to the file (XF) and directory (XD) exclusions I use. You may have different requirements!

Parameter	Explanation
/E	Copy all subdirectories, even empty ones.
/ZB	Use restartable mode; if access denied use Backup mode.
/R:0	Number of Retries on failed copies, in this case 0.
/W:0	Wait time between retries, in this case 0.
/XJ	Exclude Junction points
/NFL	No File List – don’t log file names.
/XD	Exclude selected directories; space delimited
/XF	Exclude selected files; space delimited

Note that the command promp from which you run this command must be run as an administrator. This is because we tell Robocopy to use backup mode when it cannot access a file. The right to copy a file using the backup interface (Back Up Files and Directories) is reserved for the Administators and Backup Operators groups on Windows Vista/7.

The XJ paramtere requires some extra explanation. Windows Vista changed the layout of user profiles, making Vista profiles incompatible with profiles in earlier versions of Windows. To ensure compatibility with older applications the Windows Vista profile contains several NTFS junctions that map the old folder names to the new locations. If you try to run Robocopy without the XJ parameter the copy will loop creating nested folders in your target destination until the path length reaches the maximum (256) allowed by NTFS. Therefore we need to exclude juntions.

When you run this command you will see many files that cannot be accessed since they are in use. This can be safely ignored. These files are your actual registry hive etc that is loaded when you are logged on to the system. If you want a copy of these files as well you have to boot into WinPE and make a copy from there. Or log on as another user with administrative privileges and make a copy of the profile. I have never needed any of the data in these files.