Superduper mac os x3/6/2023 ![]() are nothing more than a GUI front ends for Unix commands and preference settings, and although they need careful testing to be sure nothing has changed in the kernel, the only thing lacking in most cases is certification. OnyX, Cocktail, Tinkertool, TinkerTool System, MacPilot, et.Open Office works just fine on Big Sur so LibreOffice should work as well as both are created from the same base code set.Personally although I have had TechTool Pro since its inception, I haven't needed or used it in three or four years and have no intention of paying for an upgrade for Big Sur. Tech Tool Pro works on Big Sur but it has yet to be certified and there are functions that are not supported on APFS drives (and are generally un-needed on SSDs).NOTE: when new applications are included in a data volume clone, they will be certified the next time you boot that clone which can be time consuming and annoying. The work around is, and will likely remain for some time, maybe permanently, to install Big Sur on the target volume using the Recovery Drive and then cloning the Data volume to that drive. Copying or cloning that snapshot to another drive breaks the seal and renders the image unbootable. The Data Volume can be cloned, but the actual bootable volume is a sealed and encyrypted APFS snapshot created by the Big Sur installer. ![]() There is a dandy one in Catalina, although SuperDuper chose not to use it, but security changes in Big Sur broke it.
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