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Centos 64 bit only seeing 3834MB Ram

Hi
i have installed Centos 64 bit on Windows 2008 Hyper -V.

guest has 5012 Ram

so centos should see 5GB of ram.

but its only see 3834 mb Ram !!


some info :

free -m
             total       used       free     shared    buffers     cached
Mem:          3834         89       3745          0         13         35
-/+ buffers/cache:         40       3794
Swap:         2943          0       2943
[root@sandbox ~]#
[root@sandbox ~]# uname -a
Linux sandbox. 2.6.18-238.19.1.el5 #1 SMP Fri Jul 15 07:31:24 EDT 2011 x86_64 x86_64 x86_64 GNU/Linux



but
when i boot the same vm with Debian live 64 bit, its see full memmory

I never seen this problem before

can any one help me with this

thanks

LinuxWindows Server 2008

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arnold
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arnold
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You need to insall the kernel-pae version
yum install kernel-pae

http://www.centos.org/modules/newbb/viewtopic.php?topic_id=8457
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fosiul01
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ASKER

but kernel-pae for 32 bit system

its 64bit Os

please look uname-a ouput on the question..
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fosiul01
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ASKER

tryed that already ..
did not work ..

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arnold
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cat /proc/meminfo what is being reported there?
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fosiul01
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ASKER

MemTotal:      3926888 kB
MemFree:       3804900 kB
Buffers:          6680 kB
Cached:          36688 kB
SwapCached:          0 kB
Active:          55816 kB
Inactive:        27808 kB

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arnold
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fosiul01
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ASKER

yup

same but debian live Cd works!!!
no centos
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arnold
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I think there is a setting for grub to reflect a larger memory alocation.
Try centos 6 liveCD and see if it too reflects the lower memory.
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fosiul01
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ASKER

ok i will try with that one


just a question

is security updates on Oracle vm free ???

any idea ??
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fosiul01
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ASKER

sorry oracl Linux

security updates of oracle Linux free ? any idea?
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arnold
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I'm not sure what you mean?


Windows Server 2008
Windows Server 2008

Windows Server 2008 and Windows Server 2008 R2, based on the Microsoft Vista codebase, is the last 32-bit server operating system released by Microsoft. It has a number of versions, including including Foundation, Standard, Enterprise, Datacenter, Web, HPC Server, Itanium and Storage; new features included server core installation and Hyper-V.

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