[2008.X] Flashing the kernel live

Thu Sep 25 16:28:54 CEST 2008

Nicola Mfb wrote:
>> On Thu, Sep 25, 2008 at 2:24 PM, Jose Luis Perez Diez 
> <jluis at escomposlinux.org <mailto:jluis at escomposlinux.org>> wrote:
>> El Thursday, 25 de September de 2008 12:10:10
> roguemoko at roguewrt.org <mailto:roguemoko at roguewrt.org> va
> escriure:
> > > Does opkg recognize if the system was booted from flash or
> from the sd
> > > card before update the kernel?
> >
> > Not to my knowledge, I make sure to rm /etc/default/flashkernel
> before
> > an opkg upgrade. It's autocreated after the upgrade so there's
> probably
> > a flag somewhere, I really should find it :)
>> When the file isn't found the install process "touch"
> /etc/default/flashkernel creating the file.
>> There is a best hack for it from Stefano Cavallari posted in this list
> (http://lists.openmoko.org/nabble.html#nabble-td832513) is better
> way just
> do:
> rm /etc/default/flashkernel
> mkdir /etc/default/flashkernel
>>> Ok this will prevent that if opkg is launched form a system booted on 
> the SD it will not flash the kernel, leaving the flash os ok, but is 
> the SD upgrade safe? or may the upgraded modules not match the SD 
> kernel image?

Depends how you boot. I boot directly (well via symlink) the kernel in 
/boot, so this works fine. If you have a vfat partition then you have to 
copy the kernel over from /boot and rename it. That's why I switched to 
a single ext2 partition, much easier to maintain, especially with 
testing's regular updates.
Sarton