help! why i cannot copy my external hard disk fodler to my notebook ?

Finally get my new notebook, so going to transfer some folder from my previous computer to my new one. but during copying process  have some error... so i use Microsoft DOS xcopy command,  then able to copy all. is very simple as below :

Examples

xcopy c:\temp /e

The above example is the basic xcopy command to copy the files, directories, and subdirectories to the directory you're currently in.

xcopy "c:\documents and settings\hope" /e

In the above example the xcopy command would copy all files and directories in the user "hope" directory to the directory or drive you're currently in.

xcopy h:\*.* /a /e /k

The above command would copy everything located on the H drive to the drive you are currently on.

Additional examples and information about how to copy directories in MS-DOS and other operating systems including Windows can also be found on document CH000838.

Information copy from : http://www.computerhope.com/xcopyhlp.htm