Re: I want all my 4GB!!!
On Tue, Jul 21, 2009 at 12:08:58AM +0400, James Brown wrote:
> I have a laptop Acer TravelMate 3043WTMi under Lenny AMD64 with 4GD RAM.
> But the system "see" only 3GB:
> dmesg |grep Memory
> [ 0.004000] Memory: 3081184k/3136000k available (2225k kernel code,
> 54428k reserved, 1080k data, 392k init)
> $ cat /proc/meminfo
> MemTotal: 3088108 kB
>
> How can I get all my 4GB memory?
Could you get the output of dmesg? It would tell us exactly what the
BIOS reports for memory. Many older chipsets did not support remapping of
memory, so whatever area of the memory space PCI requried was simply lost.
Something like this is the key part:
BIOS-provided physical RAM map:
BIOS-e820: 0000000000000000 - 000000000009ac00 (usable)
BIOS-e820: 000000000009ac00 - 00000000000a0000 (reserved)
BIOS-e820: 00000000000e0000 - 0000000000100000 (reserved)
BIOS-e820: 0000000000100000 - 00000000bffc7440 (usable)
BIOS-e820: 00000000bffc7440 - 00000000bffceac0 (ACPI data)
BIOS-e820: 00000000bffceac0 - 00000000c0000000 (reserved)
BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved)
BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
BIOS-e820: 0000000100000000 - 0000000240000000 (usable)
--
Len Sorensen
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