That's true (I've actually got an amiga shell window open in an emulator on another workspace right now...) - the CD command is only needed in cases of ambiguity.
I hope you removed the clock battery from your A2500 before storing it. By now it would have started leaking corrosive gunk, a very common cause of death for these old machines.
Nuts. I don't think I removed the battery and it's been in storage for almost ten years. Then again if it can survive me naively washing the motherboard with a garden house and letting it dry in the sun, I think the Amiga gods will keep the battery intact for me. I hope so anyway.
I hope you removed the clock battery from your A2500 before storing it. By now it would have started leaking corrosive gunk, a very common cause of death for these old machines.