Hi everyone and apologies if this is the wrong forum to post this question. I wanted to ask if anyone can tell me whether it is safe to continue saving to a hard drive once it has gone red? I am fed up with having so many hard drives that never hold the amount of data they are supposed to, a 4TB drive only actually gives 3.63TB but then to make matters worse once it gets down to 364GB free space it shows red which I've always taken to mean that at this point it is full and I shouldn't add more, so really a 4TB is nearer to a 3TB drive (this has to be one of the biggest rip off scams going and shouldn't really be legal, but that's another thread). Anyway, I have a dozen 4TB drives accumulated now that are all showing red (mostly with films on and everything duplicated for back-up purpose so 6 drives are identical to the other 6) but I am reluctant to keep buying more and just wanted to know if it is ok or not to keep adding more once they show red? Can I continue saving beyond the 364GB free space all the way to 0GB free space, will this cause a problem or is it safe to do so? Just seems such a waste having so much free space that can't be used.