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Access Denied using MS DOS to Move Files
http://www.hardwaretipsandtricks.com/articles/136/1/Access-Denied-using-MS-DOS-to-Move-Files/Page1.html
By Super Admin
Published on 11/23/2006
 
Error Message Access Denied When Using MS-DOS Prompt to Move Files

Access Denied using MS DOS to Move Files
When you attempt to use an MS-DOS prompt to copy or move files to a CD-R or CD-RW drive for staging, you may receive an "Access denied" error message. This issue can occur because the MS-DOS subsystem is not coded to redirect files from the CD-R.

Details: http://support.microsoft.com/kb/279118/en-us?spid=1173&sid=global