I suppose that Spotlight is a possibility. This is the first time that I ever used the drive, so I never thought about excluding it from Spotlight. I don't have any anti-virus apps.

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