First, let me apologise as a newcomer with limited knowledge of this unexplored territory. I have tried searching here for answers, but not sure that I've looked in all the right places. Basically, before installing Paragon even for evaluation, I just want to know if it uninstalls cleanly. In particular, does it make registry modifications that affect normal OS HAL handling of device classes (e.g., the DiskDrive and Volume classes) by inserting its own filter entries or whatever. And, if it does, are all such changes reversible simply by uninstalling the product. In case anyone wonders, it's not an idle question. I'm more than slightly fed up with fixing "blue screens" caused by the sloppy installation-uninstallation package handling of certain other backup and recovery products that completely mess up Windows own hardware abstrction layer and leave the consequential death traps behind for unwary trial users.