Few quick and easy steps for how to reset everything on a mac. If you are a Mac user and you want to delete everything on a mac so here are the few steps for deleting mac data. step 1: Take your back up Step 2: Delete your all private files in your MacBook, Step 3: Turnoff FileVault option on your mac, Step 4: Remove your account on icloud or you have to sign out on your icloud account both things are same, Step 5: Now, you have deleted your all data now you are ready to reinstall you have to go to macOS Utilities menu. From there reinstall on macos. https://www.macguide.info/reset-everything-on-mac/