https://community.ccleaner.com/t/deleting-prefetch-files-keeps-readyboost-from-working/15910
Deleting prefetch files keeps Readyboost from working - CCleaner Windows Bug Reporting - CCleaner
Aug 19, 2008 - I selected the CCleaner option to delete old prefetch data. I am using Vista Ultimate. As a result, it now takes my computer much longer to startup, and the...
deletingprefetchfileskeepsreadyboost