[Gllug] Dell M65 Precision with 4G running Debian amd64

[Richard Jones]

On Sat, Jul 11, 2009 at 04:52:49PM +0100, lesleyb at herlug.org.uk wrote:
>  dmesg | grep e820
>  [    0.000000]  BIOS-e820: 0000000000000000 - 000000000009f000 (usable)
>  [    0.000000]  BIOS-e820: 000000000009f000 - 00000000000a0000 (reserved)
>  [    0.000000]  BIOS-e820: 0000000000100000 - 00000000cfe81400 (usable)
>  [    0.000000]  BIOS-e820: 00000000cfe81400 - 00000000d0000000 (reserved)
>  [    0.000000]  BIOS-e820: 00000000f0000000 - 00000000f4007000 (reserved)
>  [    0.000000]  BIOS-e820: 00000000f4008000 - 00000000f400c000 (reserved)
>  [    0.000000]  BIOS-e820: 00000000fec00000 - 00000000fec10000 (reserved)
>  [    0.000000]  BIOS-e820: 00000000fed20000 - 00000000feda0000 (reserved)
>  [    0.000000]  BIOS-e820: 00000000fee00000 - 00000000fee10000 (reserved)
>  [    0.000000]  BIOS-e820: 00000000ffb00000 - 0000000100000000 (reserved)

I fed this into my handy e820 maps processing awk script (attached)
and I would seem to agree with you that you're only getting about 3.4
GB of the total made available by your BIOS.

         0      9f000     651264 bytes     0.6 MB
     9f000      a0000       4096 bytes     0.0 MB
    100000   cfe81400 3487044608 bytes  3325.5 MB
  cfe81400   d0000000    1567744 bytes     1.5 MB
  f0000000   f4007000   67137536 bytes    64.0 MB
  f4008000   f400c000      16384 bytes     0.0 MB
  fec00000   fec10000      65536 bytes     0.1 MB
  fed20000   feda0000     524288 bytes     0.5 MB
  fee00000   fee10000      65536 bytes     0.1 MB
  ffb00000  100000000    5242880 bytes     5.0 MB
     TOTAL            3562319872 bytes  3397.3 MB

My advice would be to search through your BIOS settings to see what's
eating the other ~600 MB of usable memory.  Maybe it's mapping it as
video RAM or something?  Also try a BIOS update.

Rich.

-- 
Richard Jones
Red Hat
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