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 What is the black sticker on the JetDrive enclosure for? Will installing JetDrive void Apple's warranty? OS X 10.10.1 to 10.10.3 (Yosemite) do not allow us to enable/disable TRIM function via a third-party tool. Will this affect the SSD performance? Technical Support If the answer can't help you, you can contact the Tech Support Department Get Started