From OpenZFS on OS X
Once OpenZFSonWindows matures, automatic pool import on boot will be part of the system setup.
But for now, you will have to import pools by hand after each boot.
Wowfunhappy commented 9 hours ago • For what it's worth, I'm currently using task scheduler to import my pool on startup. Open Task Scheduler → Action → Create Task: • General: • Name: Mount [pool name] • Run with highest privileges: Enabled • Triggers → New → Begin the task: At log on • Actions → New • Action: Start a program • Program/script: zpool • Add arguments: import [any additional options you want] [pool name]