My Mac expertise is all of one week old, but yes, I have High Sierra running successfully on a 1 TB standard hard drive. The dealer did the upgrade from Sierra so I don’t know what hitches, if any, were involved. He’s a wizard.

Since then I did quite a bit of reading, and Apple said the hardware requirements for High Sierra were the same as Sierra.

This iMac I have clearly did not have a 1 TB drive when it was built in 2011.

Does that help?


BIAB 2024 Win Audiophile. Software: Studio One 6.5 Pro, Swam horns, Acoustica-7, Notion 6; Win 11 Home. Hardware: Intel i9, 32 Gb; Roland Integra-7, Presonus Studio 192, Presonus Faderport 8, Royer 121, Adam Sub8 & Neumann 120 monitors