Hard Drive

We are running the main router software on a flash drive, and I wanted to run a caching server on the hard drive. Is this possible. We are running version 3.27. I can not seem to see the hard drive anywhere on the system. I was going to try to format it but am having no luck. Please help Thanks Jason Keller Horizon Net

did you connected your hdd to the router? then you should able to see it under ‘/store’ menu