Contrary to my practices in the past, I have stopped routinely repairing permissions when installing updates. I still, however, rebuild the directory with Disk Warrior beforehand, to insure that there is no directory damage. Whether or not it is necessary, I install only one update at a time but I only run DW before the first update if I am installing several of them sequentially.

I can't claim that all the above is necessary but I have not had any problems. Oh yes, I also make sure that I have complete backup before installing a major update (such as going from 10.5.7 to 10.5.8, for example).


Jon

macOS 11.7.10, iMac Retina 5K 27-inch, late 2014, 3.5 GHz Intel Core i5, 1 TB fusion drive, 16 GB RAM, Epson SureColor P600, Photoshop CC, Lightroom CC, MS Office 365