I used lilo for years and thought it was great...but my recent delve into grub, 
yeah its better!

A few things in your setup description don't calculate right. You say /hba1 & 
/hba2. The hard drives start as /hd(a-d). And by your hd spec, both linux 
installations are on the same hard drive. Did you instead mean /hda1 and maybe 
/hdb1? This would be Master/Primary and Slave/Primary.  You said Master/Primary 
and Slave/Secondary, which would mean you are using two hard drive cables to 
the motherboard with the first one on Primary (correct) and the second one on 
slave. You should have the second slave actually set to master if there is no 
cdrom or other drive connected to that cable. Thus, you have two drives as 
master but on separate cables. (Really, cables with slave only arent an issue 
for modern systems, but its standard practise still.)

I don't see any problem in having two boots on the same hard drive as someone 
else suggested, but if you have two drives why would you. Also, in the case of 
using the same hard drive you could probably share the swap partition, I 
believe the swap partition is pseudo initialized as blank on startup. If you 
use 2 hard drives, set the swap to be on the opposite drive. That way each OS 
can issue a buffer load from the OS partition and one to swap hard drive at the 
same time. Possibly, giving you a performance boost.

Really, as others said. It sounds like you are all set to configure grub and 
have both systems working. You just need to clarify your setup and give it to 
grub.

Read all about grub, there are only a few mostly used commands anyway. Run it 
from the terminal in Ubuntu and install the Master Boot Record. Find and edit 
your config.

One thing I noticed in grub hard drives are specified in hd(n,p) where n - s 
the hard drive number 1-4 and p is the partition of that hard drive. So they 
translate as such:

Hda1 = hd(0,0)  is Primary Master
Hda2 = hd(0,1)
..
Hdb1 = hd(1,0)  is Primary Slave
..
Hdc1 = hd(2,0)  is Secondary Master
..
Hdd1 = hd(3,0)  is Secondary Slave
Hdd2 = hd(3,1)    is second partition on Secondary Slave

Grub will also want to know the location of a "stage" file, which is found in 
the /boot dir of root. And it will want to know the location of the initial 
ramdisk initrd if your installations have one, Ubuntu does.

Good luck.

C

-----Original Message-----
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Rafael Skodlar
Sent: Monday, January 21, 2008 10:35 PM
To: Enhanced Machine Controller (EMC)
Subject: Re: [Emc-users] Dual Linux EMC Installation on Dual HDDs

Hi Peter,

pmark wrote:
> Good Day - Have been working on the trying to install Fresh Dual
> Installation w/2HDD's one for Ubuntu EMC2 & one for Linux BDI EMC and the
> being able to choose the OS on BOOT. Would like to have both EMC's
> available in order to compliment each other.
>
> This Senior CZ & Newbie has been at this ALL year so what would you
>
All year is only 21days so far :-)

>

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