Need help with Airport Extreme and USB Hard Drives

[Crevice]

I have an airport extreme and until today I had 1 usb hard drive connected to it. Today I got another hard drive and connected that to it as well, so I now have 2 external usb hard drives connected to the AEBS. The problem is my original hard drive still shows up in the finder for the airport extreme, but when I click on it, this comes up "The operation cannot be completed because the original item "xxxx" cannot be found"

I can access the new hard drive just fine, it's just the old one (which was fine until today) now gives me this error message. Can anyone please help me?

 

[Crevice]

Update: It actually doesn't matter which hard drive it is, if I turn one off and on again, I get that exact error message. I read an old thread here that says go into "root" user and delete the whole volume folder, and re-make it. That seems pretty drastic, and even if thats the case I dont know how to do that.