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Full Discussion: Total RAM not recognised
Top Forums UNIX for Dummies Questions & Answers Total RAM not recognised Post 302603515 by robo on Thursday 1st of March 2012 07:48:22 AM
Old 03-01-2012
Total RAM not recognised

Hi We have a redhat 4 with 8GB ram in it
but free -m only recognises 3 GB of total ram
please could some one help me why this happens

HP syetems insight manager showing 4* 2 GB RAMS

Code:
[root@redhat ~]# free -m
             total       used       free     shared    buffers     cached
Mem:          3290       3220         69          0        231       1013
-/+ buffers/cache:       1975       1315
Swap:        16002          0      16001
[root@redhast ~]#

Code:
[root@redhat ~]# dmidecode 
Handle 0x1100
        DMI type 17, 23 bytes.
        Memory Device
                Array Handle: 0x1000
                Error Information Handle: Not Provided
                Total Width: 72 bits
                Data Width: 64 bits
                Size: 2048 MB
                Form Factor: DIMM
                Set: 1
                Locator: DIMM 1A
                Bank Locator: Not Specified
                Type: <OUT OF SPEC>
                Type Detail: Synchronous
                Speed: 667 MHz (1.5 ns)
Handle 0x1101
        DMI type 17, 23 bytes.
        Memory Device
                Array Handle: 0x1000
                Error Information Handle: Not Provided
                Total Width: 72 bits
                Data Width: 64 bits
                Size: No Module Installed
                Form Factor: DIMM
                Set: 3
                Locator: DIMM 2C
                Bank Locator: Not Specified
                Type: <OUT OF SPEC>
                Type Detail: Synchronous
                Speed: Unknown
Handle 0x1102
        DMI type 17, 23 bytes.
        Memory Device
                Array Handle: 0x1000
 Error Information Handle: Not Provided
                Total Width: 72 bits
                Data Width: 64 bits
                Size: 2048 MB
                Form Factor: DIMM
                Set: 1
                Locator: DIMM 3A
                Bank Locator: Not Specified
                Type: <OUT OF SPEC>
                Type Detail: Synchronous
                Speed: 667 MHz (1.5 ns)
Handle 0x1103
        DMI type 17, 23 bytes.
        Memory Device
                Array Handle: 0x1000
                Error Information Handle: Not Provided
                Total Width: 72 bits
                Data Width: 64 bits
                Size: No Module Installed
                Form Factor: DIMM
                Set: 3
                Locator: DIMM 4C
                Bank Locator: Not Specified
                Type: <OUT OF SPEC>
                Type Detail: Synchronous
                Speed: Unknown
Handle 0x1104
        DMI type 17, 23 bytes.
        Memory Device
                Array Handle: 0x1000
                Error Information Handle: Not Provided
                Total Width: 72 bits
                Data Width: 64 bits
                Size: 2048 MB
                Form Factor: DIMM
                Set: 2
                Locator: DIMM 5B
                Bank Locator: Not Specified
                Type: <OUT OF SPEC>
                Type Detail: Synchronous
                Speed: 667 MHz (1.5 ns)
Handle 0x1105
        DMI type 17, 23 bytes.
Memory Device
                Array Handle: 0x1000
                Error Information Handle: Not Provided
                Total Width: 72 bits
                Data Width: 64 bits
                Size: No Module Installed
                Form Factor: DIMM
                Set: 4
                Locator: DIMM 6D
                Bank Locator: Not Specified
                Type: <OUT OF SPEC>
                Type Detail: Synchronous
                Speed: Unknown
Handle 0x1106
        DMI type 17, 23 bytes.
        Memory Device
                Array Handle: 0x1000
                Error Information Handle: Not Provided
                Total Width: 72 bits
                Data Width: 64 bits
                Size: 2048 MB
                Form Factor: DIMM
                Set: 2
                Locator: DIMM 7B
                Bank Locator: Not Specified
                Type: <OUT OF SPEC>
                Type Detail: Synchronous
                Speed: 667 MHz (1.5 ns)
Handle 0x1107
        DMI type 17, 23 bytes.
        Memory Device
                Array Handle: 0x1000
                Error Information Handle: Not Provided
                Total Width: 72 bits
                Data Width: 64 bits
                Size: No Module Installed
                Form Factor: DIMM
                Set: 4
                Locator: DIMM 8D
                Bank Locator: Not Specified
                Type: <OUT OF SPEC>
                Type Detail: Synchronous
                Speed: Unknown


what could be the reason

Code:
[root@redhat ~]# uname -a
Linux redhat 2.6.9-78.EL #1 Wed Jul 9 15:27:01 EDT 2008 i686 i686 i386 GNU/Linux

Code:
 
[root@redhat ~]# cat /etc/redhat-release
Red Hat Enterprise Linux AS release 4 (Nahant Update 2)
[root@redhat ~]#

 

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