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Re: Kernel 4.9.0-7-686 Installed RAM vs. uabale RAM

Pascal Hambourg wrote:

>  But you need a
> 686-pae or amd64 kernel to use RAM beyond 4 GiB, as Michael pointed out.

but he has 3GB and machine sees only 2 - is it because kernel is not pae?
I was thinking that 686 system can see (and use) around 3GB and with some
trick above, but in case of 4GB it did not make any sense from technical
point of view, because much of it is lost for reserved mapping tables
(AFAIR). So mem is optimal on that machine, but why it can see only 2 of 3?
Is one GB shared with graphics controller?


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