Question: how to transfer data from one internal hard drive to another mac?
Answer: STEP #1. Choose the correct drive to install in your computer. ...  STEP #2. Make sure you have a way to transfer your data. ...  STEP #3. Make sure you have a current backup. ...  STEP #4. Make sure you have a means of installing your chosen OS. ...  STEP #5. Install your new drive. ...  STEP #6. Connect your old drive externally. ...  STEP #7. ...  STEP #8.