Why does my Mac computer take longer to boot after I upgraded it with JetDrive SSD? Category : Setup / Operation After upgrading your Mac with JetDrive SSD, please reset the "Start up Disk" by the following steps:1. Find "System Preferences"2. Click "Start up Disk"3. Unlock and set the disk you would like to use as start up disk 4. Reboot Is the answer helpful? Related Why can't JDM500 reach 6.0Gb/s on the late 2010 MacBook Air 13-inch? Differences between JetDrive 825 and JetDrive 820. Should I purchase a Jetdrive with larger capacity than the original Mac SSD/HDD if I want to clone the system with Disk Utility? Technical Support If the answer can't help you, you can contact the Tech Support Department Get Started