DaemonForums  

Go Back   DaemonForums > FreeBSD > FreeBSD General

FreeBSD General Other questions regarding FreeBSD which do not fit in any of the categories below.

Reply
 
Thread Tools Display Modes
  #1   (View Single Post)  
Old 6th May 2008
nikkon nikkon is offline
New User
 
Join Date: May 2008
Posts: 2
Thanked 0 Times in 0 Posts
Default RAM issue

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?
Reply With Quote
  #2   (View Single Post)  
Old 6th May 2008
chavez243 chavez243 is offline
Fdisk Soldier
 
Join Date: May 2008
Location: Leamington, ON
Posts: 50
Thanked 2 Times in 2 Posts
Default get MemTestx86

get Memtest and verify your memory is properly installed / detected and functioning.
Reply With Quote
  #3   (View Single Post)  
Old 6th May 2008
nikkon nikkon is offline
New User
 
Join Date: May 2008
Posts: 2
Thanked 0 Times in 0 Posts
Default

my memory is ok i already test it with memtest and until now i run on my machine centos5 and no problems with ram.
Reply With Quote
  #4   (View Single Post)  
Old 6th May 2008
FloridaBSD FloridaBSD is offline
Fdisk Soldier
 
Join Date: May 2008
Posts: 58
Thanked 0 Times in 0 Posts
Default

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.
__________________
Google Linux is a Green Horns Best Friend (GHBF).
Windows = a 32 bit extensions to a 16 bit patch to an 8 bit operating system originally coded for a four bit processor written by 2-bit monopolistic software company founded by a .3-bit Harvard Drop out, who can't stand one respectable bit of competition.
If I believe something to be immoral a will not keep quite and let my voice of annoyance be heard loud and clear.
Reply With Quote
  #5   (View Single Post)  
Old 6th May 2008
DrJ DrJ is offline
ISO Quartermaster
 
Join Date: Apr 2008
Location: Gold Country, CA
Posts: 506
Thanked 39 Times in 39 Posts
Default

Quote:
Originally Posted by FloridaBSD View Post
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.
Code:
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.
Reply With Quote
  #6   (View Single Post)  
Old 7th May 2008
phoenix's Avatar
phoenix phoenix is offline
Risen from the ashes
 
Join Date: May 2008
Posts: 699
Thanked 90 Times in 81 Posts
Default

Quote:
Originally Posted by FloridaBSD View Post
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.
__________________
Freddie

Help for FreeBSD: Handbook, FAQ, man pages, mailing lists.
Reply With Quote
Reply

Tags
32-bit, 64-bit, memory, pae, ram

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
W2K DHCP Issue DrJ Other OS 4 25th May 2009 07:19 PM
4.5 -current issue roundkat OpenBSD Installation and Upgrading 11 28th February 2009 02:11 PM
FFS permission issue marc OpenBSD General 2 2nd February 2009 07:31 PM
Possible SMP Issue? MetalHead OpenBSD General 1 25th November 2008 03:52 AM
NFS Server DNS Issue chiefbodge FreeBSD General 3 13th July 2008 01:57 AM


All times are GMT. The time now is 01:13 AM.


Powered by vBulletin® Version 3.8.4
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content copyright © 2007-2010, the authors
Daemon image copyright ©1988, Marshall Kirk McKusick