Messages in this thread | | | From | Thomas Fjellstrom <> | Subject | Re: missing 700 MB of RAM | Date | Sun, 21 Nov 2010 21:55:59 -0700 |
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On November 21, 2010, Jiri Slaby wrote: > On 11/21/2010 08:02 PM, Andreas Hartmann wrote: > > I've got 8 GB RAM installed, but linux reports 7,3 GB. Where is the > > missing RAM (700 MB)? > > ... > > > The motherboard is a GA-MA78GM-S2H (64bit, AMD) with a on board Radeon > > HD 3200 VGA card. The card uses 256 MB of RAM - so 444 MB of RAM are > > missing. Where are they gone? > > Hi, ask your BIOS: > > BIOS-provided physical RAM map: > > BIOS-e820: 0000000000000000 - 000000000009f800 (usable) > > BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved) > > BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) > > BIOS-e820: 0000000000100000 - 00000000afde0000 (usable) > > BIOS-e820: 00000000afde0000 - 00000000afde3000 (ACPI NVS) > > BIOS-e820: 00000000afde3000 - 00000000afdf0000 (ACPI data) > > BIOS-e820: 00000000afdf0000 - 00000000afe00000 (reserved) > > BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved) > > BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved) > > BIOS-e820: 0000000100000000 - 0000000230000000 (usable) > > It reports 7677M of usable mem. Or maybe your loader is cheating on you? > I doubt so... > > regards,
I've got the same board, It doesn't seem my map is missing more than a few MB out of 2G (gfx reservation is 128MB)
[ 0.000000] BIOS-provided physical RAM map: [ 0.000000] BIOS-e820: 0000000000000000 - 000000000009f800 (usable) [ 0.000000] BIOS-e820: 000000000009f800 - 00000000000a0000 (reserved) [ 0.000000] BIOS-e820: 00000000000f0000 - 0000000000100000 (reserved) [ 0.000000] BIOS-e820: 0000000000100000 - 0000000077de0000 (usable) [ 0.000000] BIOS-e820: 0000000077de0000 - 0000000077de3000 (ACPI NVS) [ 0.000000] BIOS-e820: 0000000077de3000 - 0000000077df0000 (ACPI data) [ 0.000000] BIOS-e820: 0000000077df0000 - 0000000077e00000 (reserved) [ 0.000000] BIOS-e820: 00000000e0000000 - 00000000f0000000 (reserved) [ 0.000000] BIOS-e820: 00000000fec00000 - 0000000100000000 (reserved)
I'm using the F5 bios if it helps any.
-- Thomas Fjellstrom thomas@fjellstrom.ca
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