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Old 04-20-2004, 02:05 PM   #1
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REDHAT 9 SMP and more than 4GB RAM

I am running redhat9 kernel 2.4.18-14smp. I assumed it could handle more than 4GB RAM but It doesnt seem to. Is it possible to make this work without recompiling.

Old 08-21-2007, 09:30 AM   #2
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I am facing a similar situation.. I am developing my own kernel which supports SMP but its facing a problem when RAM is more than 4GB. refer thread (
What is happening exactly? Does your system boot-up and show only 4GB memory? Or does it show only one processor?

Old 08-21-2007, 10:04 AM   #3
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If you have a 32-bit processor, you can only directly address 4MB of RAM. (2^32, to be precise)
Old 08-21-2007, 06:26 PM   #4
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Dunno if you guys noticed, but this thread is from April 2004, by which time RH9 was already out of date...

If you are having problems with it akshayj29, I'd highly recommend trying something newer, like, say, Fedora Core 4.
Old 08-22-2007, 10:33 PM   #5
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i am having a similar problem but with CentOS 5 - i am trying to find a PAE kernel but dont know how to get one or compile one as i am new to linux. can anyone help me please?


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