JarryG
Expert
Expert

I'd recommend to test-install other OS without changing anything in bios to check if it can see the whole memory. Or maybe you can just boot-up some live-cd/dvd/usb.

But incorrect memory size is nothing new, and I have seen a few posts here on this forum. Some of us are "lucky" to loose just a little, otherwise as much as half of ram is lost. For example my server has 32GB (mobo, cpu, ram, everything on HCL), yet ESXi reports it as 31.4GB. Live-cd with linux running on the same server reports full 32GB and memtest86 did not find any problem. Some time ago I had other server with 8GB ram, and ESXi reported 6GB. I suppose it must be something wrong on ESXi-side. Maybe it requires some special bios-settings not needed by other os...

_____________________________________________ If you found my answer useful please do *not* mark it as "correct" or "helpful". It is hard to pretend being noob with all those points! :winking_face:
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