Can anyone tell me how to reformat the hard disk on this model video recorder? I keep getting a disk error on my screen and my recording mode halts, this error pops up and after turning it off for several minutes, turning it back on, it all works well....for a couple more days then it starts all over. Before I try to figure out how to replace the hard disk, I'd like to try reformatting it but can't find ANY sort of notes online on how this is done? If no one can answer that, can someone please give me advise on replacing the hard drive all together (such as make, model, do I have to load any sort of software on to it, etc??) Thank you!!