how to tell where it booted from

[Mike Wright]

Hi everybody,

I have several large disks filled with experiments and multiboots.  I 
need to make changes to the current /boot/grub/grub.cfg but I have no 
idea which one I'm using or which one of the systems' grub config tools 
were used so I don't dare just grab any old one and use it

I've searched through seven VolumeGroups full of LogicalVolumes and 
can't seem to find the one I'm using.  Also combed through partitions 
that are not part of LVM.

Does the boot process leave any footprints behind telling where it 
booted from?

Rapidly losing what little is left of my mind...

TIA,
Mike Wright