More BTX boot issues...

Matthew Dillon dillon at
Sun Jun 27 22:45:00 PDT 2004

:Using latest sources, the loader fails to boot my machine. Built with 
:gcc-2.95. Note that, unlike my other BTX reports, this is on my main 
:machine, which has been working fine until now.
:	IBM T40 Thinkpad
:	1.6 ghz Pentium M, 512 mb RAM
:	no serial ports
:Error message:
:BTX loader 1.00  BTX version is 1.01
:Console: internal video/keyboard
:Console: null port
:BIOS drive C: is disk0
:BIOS 636kB/522624kB availible memory
:panic: stack overflow in function
:--> Press a key on the console to reboot <--
:-- Tim Wickberg
:    me at xxxxxxxxxxx

    Hmm.  That's one I've never seen before.  On the off-hand that it is
    related to the serial port, try creating a /boot.config file with
    -V in it (video only boot).

    You should be able to bypass the third stage loader (which is what failed)
    and get to your kernel by hitting escape just after the first stage 

    It says:

    Default: F1

    hit F1, then immediately hit Esc.  You should break into the stage-2
    loader.  It will say something like:

    DragonFly/i386 boot
    Default: 0:ad(0,a)/boot/loader
    boot: <garbage>

    hit backspace a few times to get rid of the garbage, then boot your kernel
    directory e.g. by typing:  /kernel

    Then mess around with /boot.config (note: it's a file in /, not in /boot)
    and reboot and see if you can get around the problem.


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