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  • "C:\$Extend\$Deleted" NTFS question.

Hi I am trying a 3rd party defragmentation program called Defraggler. The fragemented files list shows "C:\$Extend\$Deleted\00570000000000000412something" at about 5852KBytes.
What is this file?
I am semi new to Windows 10.
This is a ntfs journal .. it teaches the programs where to find the data

You can delete it using the fsutil command or leave it if small