Linux only detects 2gb of ram
From Initq
If you installed Debian Lenny and it is not picking up the full physical ram then install the bigmem kernel.
apptricity:/etc/init.d# uname -a Linux apptricity 2.6.26-2-686 #1 SMP Wed Feb 10 08:59:21 UTC 2010 i686 GNU/Linux apptricity:/etc/init.d# apt-get install linux-image-2.6.26-2-686-bigmem Reading package lists... Done Building dependency tree Reading state information... Done Suggested packages: linux-doc-2.6.26 The following NEW packages will be installed: linux-image-2.6.26-2-686-bigmem 0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded. Need to get 20.3MB of archives. After this operation, 61.6MB of additional disk space will be used. Get:1 http://security.debian.org lenny/updates/main linux-image-2.6.26-2-686-bigmem 2.6.26-21lenny3 [20.3MB] Fetched 20.3MB in 1min35s (213kB/s) Preconfiguring packages ... Selecting previously deselected package linux-image-2.6.26-2-686-bigmem. (Reading database ... 26150 files and directories currently installed.) Unpacking linux-image-2.6.26-2-686-bigmem (from .../linux-image-2.6.26-2-686-bigmem_2.6.26-21lenny3_i386.deb) ... Done. Setting up linux-image-2.6.26-2-686-bigmem (2.6.26-21lenny3) ... Running depmod. Running mkinitramfs-kpkg. Running postinst hook script update-grub. Searching for GRUB installation directory ... found: /boot/grub Searching for default file ... found: /boot/grub/default Testing for an existing GRUB menu.lst file ... found: /boot/grub/menu.lst Searching for splash image ... none found, skipping ... Found kernel: /boot/vmlinuz-2.6.26-2-686-bigmem Found kernel: /boot/vmlinuz-2.6.26-2-686 Updating /boot/grub/menu.lst ... done apptricity:/etc/init.d# uname -a Linux apptricity 2.6.26-2-686 #1 SMP Wed Feb 10 08:59:21 UTC 2010 i686 GNU/Linux apptricity:/etc/init.d# cd /boot apptricity:/boot# ls config-2.6.26-2-686 initrd.img-2.6.26-2-686 System.map-2.6.26-2-686-bigmem config-2.6.26-2-686-bigmem initrd.img-2.6.26-2-686-bigmem vmlinuz-2.6.26-2-686 grub System.map-2.6.26-2-686 vmlinuz-2.6.26-2-686-bigmem apptricity:/boot# ls -la total 17372 drwxr-xr-x 3 root root 4096 2010-02-16 13:43 . drwxr-xr-x 21 root root 4096 2010-02-16 13:43 .. -rw-r--r-- 1 root root 91715 2010-02-10 06:27 config-2.6.26-2-686 -rw-r--r-- 1 root root 91744 2010-02-10 06:28 config-2.6.26-2-686-bigmem drwxr-xr-x 2 root root 4096 2010-02-16 13:43 grub -rw-r--r-- 1 root root 6278082 2010-02-16 09:57 initrd.img-2.6.26-2-686 -rw-r--r-- 1 root root 6316927 2010-02-16 13:43 initrd.img-2.6.26-2-686-bigmem -rw-r--r-- 1 root root 928515 2010-02-10 06:27 System.map-2.6.26-2-686 -rw-r--r-- 1 root root 950136 2010-02-10 06:28 System.map-2.6.26-2-686-bigmem -rw-r--r-- 1 root root 1507024 2010-02-10 06:26 vmlinuz-2.6.26-2-686 -rw-r--r-- 1 root root 1548304 2010-02-10 06:28 vmlinuz-2.6.26-2-686-bigmem
Before Reboot
apptricity:/boot# dmesg | grep -i memory [ 0.000000] PM: Registered nosave memory: 00000000000a0000 - 0000000000100000 [ 0.004000] Memory: 3358372k/4194304k available (1771k kernel code, 43336k reserved, 750k data, 244k init, 2485568k highmem) [ 0.004000] virtual kernel memory layout: [ 0.860245] Freeing initrd memory: 6130k freed [ 0.860245] Total HugeTLB memory allocated, 0 [ 1.272205] Freeing unused kernel memory: 244k freed
apptricity:/boot# free total used free shared buffers cached Mem: 3365724 218004 3147720 0 760 174032 -/+ buffers/cache: 43212 3322512 Swap: 2650684 0 2650684
After Reboot
apptricity:~# uname -a Linux apptricity 2.6.26-2-686-bigmem #1 SMP Wed Feb 10 09:24:17 UTC 2010 i686 GNU/Linux apptricity:~# free total used free shared buffers cached Mem: 4145824 93164 4052660 0 5476 51872 -/+ buffers/cache: 35816 4110008 Swap: 2650684 0 2650684 apptricity:~# dmesg | grep -i memory [ 0.000000] PM: Registered nosave memory: 00000000000a0000 - 0000000000100000 [ 0.004000] Memory: 4138592k/4980736k available (1836k kernel code, 49720k reserved, 790k data, 256k init, 3272000k highmem) [ 0.004000] virtual kernel memory layout: [ 0.865995] Freeing initrd memory: 6168k freed [ 0.894064] Total HugeTLB memory allocated, 0 [ 1.278149] Freeing unused kernel memory: 256k freed
