I recently installed two new SSD’s into my MacBook Pro 2011, one in place of my HDD and a second in place of my optical drive, when I booted up the computer the first one showed up but the optical drive SSD did not show up. Also my bootable drive for OS X El Capitan isn’t allowing me to install it so I took out the new SSD and put my old HDD back. Any answers as to why my second SSD isn’t showing up upon booting up the computer? Pretty sure I installed it correctly, also I’m having a lot of trouble creating a working High Sierra bootable USB drive. Every time I try to download a copy of HS from the App Store it doesn’t download the full 6gb+ installer but only the like 20mb one. I need help please!