kernel/system can't see all 4G memory

Roberto Ragusa mail at
Thu Nov 3 10:40:44 UTC 2011

On 11/03/2011 08:46 AM, George R Goffe wrote:
> Hi,
> My question is, am I missing something here?
> I upgraded my lenovo 60t to 4G memory and don't seem to be able to see all 4G of the upgrade.
> The hardware spec for this machine says it supports 4G memory.
> Any hints/clues/tips would be GREATLY appreciated.

x86_64, so something is happening at the hardware level (shared VGA?)
or BIOS level (wrong config, bugs).

What do you get with this command?

  grep 'BIOS-e820' /var/log/dmesg

it will show how the memory areas have been described by the BIOS.

   Roberto Ragusa    mail at

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