[fb-u] Switch between Two OS's.

Hi,

My Sony Vaio laptop BIOS allows the pressing of a key combination to
save the current contents of RAM to a dedicated partition and power-off
the machine;  all in seconds.  On power on the BIOS notes the partition
isn't empty and re-loads it into RAM and the OS carries on where it
left off.  At least that's my `users view' of what's happening.

That left me wondering if this could be exploited to switch between two
OS, say Linux and Win98, without shutting either down.  It would be a
poor man's plex86.org in that I'd only be able to use one at a time,
but since the switching between them would be quick, it would suffice
for many users.

This would need something to switch the contents of the partition
between the Linux and Win98 memory images.  Forgive me, I know little
about PC hardware.  Do Linux and Win98 know about the key combination
being pressed before memory contents are saved?


Ralph.