Still losing free space after following guides in Defraggler Discussion Posted July 27, 2018 · Report reply - Run Antibody's WIZTREE. It will show the size of the "System Volume Information" (SRP) folder in which the data for the SRPs are stored. How does the size of that folder develop over time ? - Even when one deletes all System Restore Points with CCleaner then that one folder won't be fully empty and still can contain GBs of data. - I wouldn't worry too much. When Windows finds out that the amount of free space has become to low it will automatically delete one or more SRPs.