If/when the hard drive fails on the Premiere XL4, can I just replace the hard drive, and will it be as good as new? The recordings will be gone, but if I just install the replacement hard drive, can I just turn on the Tivo and it will start up? Also, can I watch live TV after the hard drive fails? I read through this thread: Hard Drive Recommendation One recommendation was a Western Digital Red: https://www.amazon.com/Red-3TB-Hard...5733&sr=8-1&keywords=western+digital+red&th=1 But someone else said WD Purple. But then someone else said don't do Purple, do Red. Thoughts?