So it's a well known fact that the PowerMacs manufactured before 2002 cannot take a harddrive larger than 128GB. I have an old B&W that was running 10.4, and upon putting a 250GB drive inside, it told me that I had inserted a 128GB. That was expected. However, I recently decided to turn that machine into a Debian home file server. I shoved the 250GB drive inside, did some formatting, and now it tells me that it is a 250GB drive. Is this safe to use? Will all my data go corrupt after I've added more than 128GB of stuff?

In case the specs are helpful to have, it's a 400MHz B&W, 1GB RAM, Rev. B.