thanks Joe, point 1 I mean even if no failure, you can't restore your Mac HD unless bootable, which make it super easy where you see dock and everything come up real nice on restore-- But came come close right getting your Mac HD back to where it was right?

And Parallels, what suggesting, could one in Catalina, and later Big Sur, boot into El Capitan? If so then technically, I don't need Parallels.