DragonFly users List (threaded) for 2004-12
Re: Laptop and live cd
:The BIOS do not allow any changes to the cd drive. I tried a FreeBSD
:4.6 and 5.1 cd, only ones I have, and neither one will boot. 4.6 get to
:will get to the hit enter to boot and the 5.1 will get to the menu, but
:no options will get you further. Again you hear the cd drive wind down
:and the computer shuts off.
Ouch. If 4.6 doesn't boot then it isn't an El Torito emulation
issue. It sounds like the loader is overwriting memory that the
BIOS is using.
I can only think of one thing.
ESC out of the boot sequence before boot2 is able to load
/boot/loader. There is a very short interval of time after you hit
e.g. F1 from boot0 where boot0 loads boot1 and boot2 and then boot2
tries to load /boot/loader. If you hit ESC a few times immediately
after hitting F1 from boot0 you should be able to break into the
From the boot2 prompt you could try booting the /kernel directly
rather then /boot/loader.
If that works then the problem is likely related to BTX emulation,
but its virtually undebuggable so finding the cause might be
impossible. If that doesn't work then the problem is likely due
to the BIOS needing memory that the boot loader is overwriting. There
is no real fix for that sort of thing without knowing exactly what
the problem is.