I recently erased everything on my five-year-old M1 MacBook Pro to pass it on to my wife. Earlier, we had two separate user accounts on that computer, but now it’s entirely hers, as I have moved to a MacBook Air with an M4 chip.
If you’re planning to sell, recycle, or trade in your Mac or simply start fresh with a clean slate with no system data, leftover app files, cache, stuck Xcode Command Line Tools that refuse to be deleted, and so forth, you can factory reset your Apple computer. After that, its software will be essentially as it was on the very first day you took it out of the box.
More, here.
