kernel compile

[don fisher]

I was trying to build a new kernel under 8.10 so that I would have the 
.o modules to link to. I was able to build everything (commands below) 
except the vmcoreinfo file. How is this made, and who uses it? I did not 
see in in any documentation or the O'Rilly linux device drivers book.

   sudo apt-get build-dep linux-image-$(uname -r)
   sudo apt-get source linux-image-$(uname -r)
   make xconfig
   make dep
   make
   make install
   make modules_install
   mkinitramfs -o /boot/initrd.img-2.6.27.10 /lib/modules/2.6.27.10


Thanks
don