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 I boot from my JetDrive SSD after system migration? Will installing JetDrive void Apple's warranty? Why aren't the JetDrive500 in 480GB and 960GB supported on MacBook Air (11-inch Late 2010)? Technical Support If the answer can't help you, you can contact the Tech Support Department Get Started