File system filters are pluggable kernel drivers. For example, ProcMon (Sysinternals tool) monitors file systems via a file system filter -- so fun fact, if you

File system filters are pluggable kernel drivers. For example, ProcMon (Sysinternals tool) monitors file systems via a file system filter -- so fun fact, if you outright disable file system filters on a ReFS volume, you won't get any ProcMon results! This was a 'duh' moment for me. https://learn.microsoft.com/en-us/windows-hardware/drivers/ifs/about-file-system-filter-drivers https://learn.microsoft.com/en-us/windows-hardware/drivers/i...