Question: cannot update 2013 iMac to High Sierra
I have tried multiple times to update from 10.9.5 to High Sierra. This is what shows on the log after about 20 hours of updating - or at least a show of very gradual movement on the blue bar:
I think this is the applicable bit. What does "Target is not convertible to APFS: This volume is not formatted as Mac OS Extended (Journaled)."
iMac, OS X Mavericks (10.9.5)