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You can’t. Certain amount is allocated for system function.
Sorry, there was a problem. Please try again later.You have to change that in BIOS. Reboot and hit teh F2 key repeatedly to enter BIOS, and then choose the 0.5 GB, 1GB, or 2GB option. I changed to the 0.5 GB option for the integrated grapics frame buffer. That frame buffer removes that much RAM from the RAM pool, meaning your OS has (by default) only 6GB instead of 8GB available for your work. BTW, you need to install another DDR4 8GB 3200 (ideally 2 rank, but 1-R or 2-R will be OK)... that will enable dual channel and make the machine speed up greatly (+15% 3D graphics and up to about 40-45% in many operations). Adding two 16GB modules (32 GB) made almost no difference at all in my testing, except in video editing. So just add a cheap 8GB module to get dual channel 16GB for big boost. The boost is so big because of the way Lenovo designed this cooling system and motherboard, and the chips they used in the motherboard... but it is 50% cheaper than a Legion :)
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