https://community.hpe.com/t5/operating-system-linux/himem-kernel/m-p/2923750#M3892 Look on your redhat cd, there will be several kernel packages available like: kernel-UP, kernel-SMP, kernel-Athlon,... and also a kernel-HIGHMEM. you need to install this one. Tue, 11 Mar 2003 07:23:57 GMT dirk dierickx 2003-03-11T07:23:57Z https://community.hpe.com/t5/operating-system-linux/himem-kernel/m-p/2923749#M3891 Hi!<BR />I have a proliant server DL580 with RH 7.1 Ver 2.4.2-2<BR />and 4GB Memory, but linux only recognize 898796K, In the dmesg command shows "kernel: Warning only 896MB will be used" "kernel: Use a HIGHMEM Kernel enabled kernel"<BR />Someone knows how can I fix this?<BR /><BR />Thks.<BR /><BR /> Mon, 10 Mar 2003 22:45:30 GMT https://community.hpe.com/t5/operating-system-linux/himem-kernel/m-p/2923749#M3891 Javier Juarez 2003-03-10T22:45:30Z https://community.hpe.com/t5/operating-system-linux/himem-kernel/m-p/2923750#M3892 Look on your redhat cd, there will be several kernel packages available like: kernel-UP, kernel-SMP, kernel-Athlon,... and also a kernel-HIGHMEM. you need to install this one. Tue, 11 Mar 2003 07:23:57 GMT https://community.hpe.com/t5/operating-system-linux/himem-kernel/m-p/2923750#M3892 dirk dierickx 2003-03-11T07:23:57Z