After full advanced format, FDT and FAT of root directory definitely reset. Now let’s refer to the difference between full format and quick format in processing sub-direcotry and data region. Firstly, we create a file in this partition named “ABC”, whose contents are as followingchart:


After full format, the content of “ABC” is:


Obviously, neither of full format and quick format changes the contents of sub-directory.  In addition, full format doesn’t change the file contents.