Hi, My iMac, running Mojave 10.14.6, is being sluggish bordering on unresponsive. Attempting a cleanup using Onyx, the second step (after checking the S.M.A.R.T status, which is fine) is checking the structure of the System Files on the Startup Volume. When I try to do this, Onyx gives me this message: “Not possible to verify the startup volume because it is not journaled.” So my question is, what do I need to do to get my Startup Volume journaled? Thanks for help!