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Old 12-29-2010, 05:32 AM   #1
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RHEL6 memory support

How much RAM is supported by RHEL 6 x86_64 ?

I installed 6GB RAM and was unable to install RHEL6 due to kernel panic.

Then I removed a 2GB stick and successfully installed RHEL6 with 4GB RAM.

But inside the OS it shows only 3.3 GB of RAM ?

Why ?
Old 12-29-2010, 06:16 AM   #2
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Normally I'd say "because you installed the 32-bit version," but even the 32-bit SMP RHEL6 kernel supports up to 16GB RAM. What kernel are you running, exactly (uname -a)?


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