Just now I ran Parallels (latest) Toolbox's Disk Clean on my Mac but it appeared not to live up to its promise. Despite its initial and scanned estimates of ~10 to 11 GB being free-able, according to Get Info of Mac's Finder, free disk space was unchanged. Is there an explanation for this? In greater detail... I have Parallels Toolbox 5.0.1 on macOS 10.15.7 (Catalina) This morning it ran, initially estimating (according to the pop-up prompt) 10 GB free-able Before running it, I checked system disk free space via macOS Finder: ~50 GB On running it, the scan estimated 11.23 GB "Ready for Cleanup" However on completion, the amount of free disk space, according to Finder's Get Info, was unchanged. (~50 GB) I got that same result immediately and also after waiting a while and rebooting. Intriguingly, when I ran Disk Clean a second time, it estimated only 0.5 GB free-able. So something's changed, but what? And why can't Finder's (System Disk) Get Info see that?