Gene Heskett wrote:
Thanks. But this still does not explain why grub itself is so slow.
After the bios is done, then the next thing one normally sees is the "Grub
stage 2 loading", but I'm watching a monitor telling me there is no input
drive for about 12 seconds between the bios clearing the screen, and that
printout.
And normally that just sort of flickers for a few milliseconds, but that now
stays on screen for 2 or 3 seconds, then the screen is cleared again, and
about 10 seconds later the boot choice menu finally pops up. This only took
maybe 2 seconds total on the old motherboard, now it's a good 20-25 seconds
from the bios clearing the screen to the boot selection menu.
Its that time that I'm fussing about.
Are you running on an x86_64 platform?
On my 64-bit machine, grub is running in 32-bit mode and it takes a fair
bit of time for the POST to GRUB transition, just like you describe.
My theory is that it is taking time to mode-switch from 64-bit to 32-bit
mode and then back.