http://blogs.technet.com/b/askcore/archive/2010/08/25/ntfs-file-attributes.aspxIt is time once again to delve into the fascinating world of NTFS! So far I’ve outlined how files become more complex as they grow, the different metafiles found in the MFT, and then the different parts of Windows storage that results in the infamousen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.technet.com/b/askcore/archive/2010/08/25/ntfs-file-attributes.aspx#3535307Wed, 28 Nov 2012 20:14:01 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3535307Robert Mitchell [MSFT]<p>Sorry to leave this comment so long without an answer. &nbsp;I can see what you are trying to do, but it would be better accomplished by creating an alternate data stream (ADS) and storing your information there. &nbsp;It wouldn&#39;t affect the primary data stream (unnamed data stream) and it would follow the file. &nbsp;An ADS would actually exist in a separate data attribute. &nbsp;</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3535307" width="1" height="1">http://blogs.technet.com/b/askcore/archive/2010/08/25/ntfs-file-attributes.aspx#3456237Thu, 29 Sep 2011 06:40:12 GMTd5e57398-b9ef-4490-9955-07cbb4e4a80d:3456237Drewfus<p>Robert, this is a good post!</p> <p>How extensible are NTFS attributes? Hypothetical example; To give developers a way of marking files and folders as migrateable (defined as non-machine specific, non-cache, non-temp user data), could a new entry be added to $STANDARD_INFORMATION to allow for this? Would this be a huge undertaking re compatibility and other issues, or fairly simple to implement? I&#39;m thinking in terms of backup tools like Robocopy.</p> <div style="clear:both;"></div><img src="http://blogs.technet.com/aggbug.aspx?PostID=3456237" width="1" height="1">