According to EveryMac.com, MacBook6,1 supports 8GB of RAM. No futzing
would be required. Apple only supports RAM configurations that were
available at the time the model was sold. If 4GB modules were not
available in 2009, then they would not claim to support a total of 8GB
of RAM. But according to EveryMac your Mac does work with that amount
of RAM.
Not sure where I saw that reference (some Mac site - MacFixit or
something?) but they were pretty definitive about it.
Until it finally expired, my late 2008 Macbook Pro ran 8GB just fine,
even though Apple only 'supported' 4GB. I suspect your would run 8GB as
well.
Chris
