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13.3.9 displaymem

— Command: displaymem

Display what GRUB thinks the system address space map of the machine is, including all regions of physical ram installed. GRUB's upper/lower memory display uses the standard BIOS interface for the available memory in the first megabyte, or lower memory, and a synthesized number from various BIOS interfaces of the memory starting at 1MB and going up to the first chipset hole for upper memory (the standard PC upper memory interface is limited to reporting a maximum of 64MB).

 
 
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