OSDev.org

I get memory information (memmap) from grub.
Is it reliable ?

If i want to do bios call to get memmap should i switch back to real mode. else an easy way available to do this.

please give me a good idea to end with a good and right memory map.

The Grub memory map is produced from using the same bios ints you're talking of using. The map is not gauranteed, but its close. Its always been, or seemed to be, correct for me.

Moose