"Folder FRN" and "Folder Generation" columns

General discussion related to "Everything".
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salazor
Posts: 258
Joined: Tue Jun 17, 2014 10:52 am

"Folder FRN" and "Folder Generation" columns

Post by salazor »

In one of the earlier versions probably 1.2.1.452a, former columns "Folder FRN" and "Folder Generation" what they displayed? - What information.

Thanks.
void
Developer
Posts: 15098
Joined: Fri Oct 16, 2009 11:31 pm

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

Post by void »

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 1.2.1.452a.
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