How to read and write A FAT in WinXP [duplicate]

This question already has answers here:开发者_Go百科 int 13h in windows protected mode? (4 answers) Closed 8 years ago.

I am trying to read the FAT using Int 13H of but its Failing as I run the program. It flashes a message "Access Denied " though I am working in the Administration Domain Can any one answer me the reason and solution for it Thanking You Gaurav

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Use the CreateFile API for Win32 as detailed in this article:

http://support.microsoft.com/kb/100027

Note in Windows Vista direct disk access is restricted further:

http://msdn.microsoft.com/en-us/library/aa363858%28VS.85%29.aspx