Hi,
I have 4GB memory in my machine . The machine is four Intel(R) Xeon(R)
CPU - 1.60GHz processors box. The bios correctly shows 4GB memory.
Initially the machine had Redhat Enterprise Linux 3 on it and the
machine showed all 4GB memory . Now I have reinstalled the OS to FC6 .
But now machine shows *only 3 GB memory*.
We have tried recompiling the linux kernel with following options but
still it didnt show all the available memory (4GB)
Method :1
CONFIG_HIGHMEM4G=y
CONFIG_HIGHMEM=y
Method : 2
CONFIG_HIGHMEM64G=y
CONFIG_HIGHMEM=y
We have also tried passing boot option mem=4096M to the kernel without
any luck.
What it could be the reason? How to fix this issue?
Thanks in advance,
Sekar