[ubuntu-uk] 64 bit lucid install

[Liam Proven]

On Tue, Apr 27, 2010 at 12:34 PM, Paul Sutton <zleap at zleap.net> wrote:

> Would some of the missing memory be video memory perhaps which is
> shared, from the main memory.

Nope. That is why some RAM in a 4GB machine is inaccessible to a
32-bit OS: because the memory taken by the graphics card & other I/O
devices is "in the way" and "hiding" it.

That is the reason for running 64-bit on a machine with >3GB of RAM:
to get at the extra memory that is inaccessible to a 32-bit OS.

-- 
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