RAM issue

[nikkon]

hello people,
i just install freebsd 7 on my home pc and i have a small issue with my ram.
I have 3GB of ram (2x 1gb and 2x512) and my system can see barely 2GB of ram.

Any ideas how to fix it?

[chavez243]

get Memtest and verify your memory is properly installed / detected and functioning.

[nikkon]

my memory is ok i already test it with memtest and until now i run on my machine centos5 and no problems with ram.

[FloridaBSD]

As I have been told by many other fellow users on daemonmforums and linux questions You needa 674bit kernel in order to have you machine properly recognize more than about 2.75gb of memory.

[DrJ]

Originally Posted by FloridaBSD

You needa 674bit kernel in order to have you machine properly recognize more than about 2.75gb of memory.

Nonsense. I have 3GB installed, and all are recognized.

pinot% dmesg | grep emor
real memory  = 3220701184 (3071 MB)
avail memory = 3141808128 (2996 MB)

Depending on the video card you have installed, the 32-bit version sees about 3.5GB memory.

[phoenix]

Originally Posted by FloridaBSD

As I have been told by many other fellow users on daemonmforums and linux questions You needa 674bit kernel in order to have you machine properly recognize more than about 2.75gb of memory.

You need a 64-bit OS in order to address more than 4 GB of RAM.

A PAE-enabled kernel can access more than 4 GB of RAM, but only in 4 GB chunks (ie, each process only sees 4 GB RAM, but you can run multiple processes each with their own 4 GB).

A 32-bit OS, however, will not be able to address all RAM if you have 4 GB. Depending on the motherboard and CPU, between 256 MB and 1024 MB will be "reserved" for PCI devices. Some AMD motherboard (don't know about Intel) will allow you to re-map the RAM above the 4 GB line (making it look like you have up to 5 GB of RAM, with 4 GB usable) but not all devices play nicely with that.