Geez . . . I have been asleep at the wheel. I didn't realize that REPAIR DISK in DU had been brought back! I didn't know that it ever disappeared. In past years, DU was weak in this regard and I relied on Disk Warrior. Now that, it appears, DW may never be updated for APFS, I'm happy to see that DU has evidently been strengthened.
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
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