Macbook Pro 15" Top model
I bought a new retina display macbook pro 15 inch and its the top model. After getting all my updates, it boots up slow, why is it so? I bought it around 2 months back in march, 2015
MacBook Pro with Retina display, 15 inch
Please take each of the following steps that you haven't already tried. Test after each one. Back up all data before making any changes.
1. Set the default startup disk.
2. Disconnect all wired peripherals except those needed to start up. If there's no change, reconnect them
3. Reset the System Management Controller.
4. Reset the PRAM. Afterwards you'll need to repeat Step 1.