"Folder FRN" and "Folder Generation" columns

General discussion related to "Everything".
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"Folder FRN" and "Folder Generation" columns

Post by salazor » Wed Apr 29, 2015 11:40 pm

In one of the earlier versions probably, former columns "Folder FRN" and "Folder Generation" what they displayed? - What information.


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Re: "Folder FRN" and "Folder Generation" columns

Post by void » Thu Apr 30, 2015 12:20 am

The Folder FRN is the Folders File Record Number.
This is the NTFS internal reference number for a folder.

The Folder Generation is the Folders Sequence Number.
This is the number of times this FRN has been reused.

When a folder is deleted, the File Record Number gets marked as unused.
When a new folder is created It may reuse this File Record Number.
When a File Record Number is reused its Sequence Number is incremented.

Everything indexes this information since it is needed for the USN Journal and monitoring changes.
The USN Journal refers to FRNs instead of full paths.

The Information is not really useful for anything.
It could be used to unreliably sort folders by date created as was intended for Everything

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