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Re: hibernation, dual boot



wwp wrote:
> Hello all,
> 
> 
> I wonder if it's possible to suspend-to-disk, then boot to another OS, which
> doesn't use the swap partition used by the previous one for hibernation.
> 
> More precisely, I've a laptop w/ FC5 and winXP installed, both entries
> available thru the grub boot menu. When I need to reboot in XP, I'd like to
> hibernate the running FC5, then boot to XP then later reboot to de-hibernate.
> But when I boot the machine after suspending-to-disk I don't get the grub
> menu, it automatically de-hibernate.
> 
> Any hint?
> 
> 
> Regards,
> 
> 
It should not be a problem if you are using the Linux
suspend-to-disk. If you are using the BIOS hibernate feature, that
is another story. The way Linux does it is to basicly write the
machine state to the swap file. Then when you boot Linux with the
RESUME option properly set, it will check the swap file for the
proper signature of a resume image, and use it if it is there. It
does not matter what you have run between Linux boots as long as you
have not touched the swap file, and that you have not modified any
files that were open when you suspended the system. (Changing open
files may be ok - it depends on how they were open.) Remember, the
machine is completely powered down after a suspend to disk. So all
the hardware has to be re-initialized when you resume. You may need
to do a shutdown in XP, and then power back on before starting
Linux, instead of just doing a reboot from XP. I have a couple of
machines that I have to do a shutdown and restart any time I change
between the two OS's or some hardware does not work.

Mikkel
-- 

  Do not meddle in the affairs of dragons,
for thou art crunchy and taste good with Ketchup!


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