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Red Hat Enterprise Linux 3 virtual machines do not detect more than 4GB of memory

Details

The Athlon kernel that is shipped with Red Hat Enterprise Linux 3 does not support Physical Address Extension (PAE). As a result, virtual machines running Red Hat Enterprise Linux 3 on AMD hardware might not detect all the memory available to them. This occurs when the memory allocated exceeds 4GB.

Red Hat Enterprise Linux 3 virtual machines do not detect memory more than 4GB.

Solution

This is a known third-party issue with Red Hat Enterprise Linux 3. For more information, including current information on possible solutions, see http://kbase.redhat.com/faq/docs/DOC-7002.

Note that hugemem kernels are sometimes listed as a possible solution to this issue, but VMware does not support hugemem kernels, as is described in http://ikb.vmware.com/kb/8964517.

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  • KB Article: 630279
  • Updated: Aug 14, 2009
  • Products:
    VMware ESX
  • Product Versions:
    VMware ESX 3.0.x