I think that my iMac boots so fast because it uses a fusion drive, not because Yosemite is responsible. I wasn't referring to Tex Antoine. My father used to use that saying, and as a non-sexual metaphor.

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