[How to disable Dell OptiPlex "No hard drive detected" when rebooting?]

Thanks! I tried changing boot priorities but nothing worked. However your suggestion regarding disabiling SATA ports might work. I'll give it a shot. Otherwise I'll connect one drive to motherboard SATA and see how it goes. Thanks for the idea! 

[How to disable Dell OptiPlex "No hard drive detected" when rebooting?]

Noob question, not directly related to Xpenology setup.

 

Whenever I reboot Xpenology or shut it down and turn on again, a warning screen shows up on startup saying "No hard drive detected". I have to click continue for it to disappear, and then the PC would restart again but this time it loads Xpenology.

 

I tried fiddling with the boot priorities, disabling eufi, disabling errors/warnings in bios, but nothing works.

 

This error forces me to be physically go next to the PC and hit enter whenver I need to restart Xpenology.

 

All hard drives are connected to a SAS controller. All SATA connections on the motherboard are empty.

 

Thanks!