[ubuntu-in] Grub Query for installation on external device

[ramnarayan.k at gmail.com]

Hi

Some time earlier i posted a query asking about installing a linux 
(ubuntu in this case) on an external device and how the grub would react 
- would there be a separate grub loader for the external device and for 
the machine it works with.

The answer was that the grub was / is resident on the external disk so 
the grub loader on the machine (laptop in my case) would remain intact.

Following this is had two queries actually
1. How Would, the Linux distribution, installed on the external device 
react to some other machine - not the one it was originally configured with.

2. does the grub loader check the system - hardware config every time it 
boots up

thanks
ram