@mike-
Any data you write above 4gb on a stock install will get corrupted btw.
Actually it's worse, it will overwrite the data below the 4GB mark, causing both to get corrupted. It's also likely that RDB is overwritten, and if this happens you lose all partitioning info.
Needless to say, if you attempt >4GB usage, doublecheck everything to make sure it works properly...
