From: "Jon" <ecs-t6x@2rosenthals.com>
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To: "eCS ThinkPad T60/61 Mailing List" <ecs-t6x@2rosenthals.com>
Date: Mon, 13 Jul 2009 10:13:08 -0700 (PDT)
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Subject: Re: [eCS T60/T61] multibooting eCS and Ubuntu on a T6x

On Mon, 13 Jul 2009 10:26:48 -0500 Lothar Frommhold wrote:
>
>
>How does one actually set up a T61p so that one can boot to either 
>eCS2.0 RC6a or Ubuntu 9.04=3F 

I have not done this, so this advice is worth exactly what you paid for i=
t.  ;)

It is my understanding that Ubuntu comes in several flavors.  The one you=
 want would be whatever 
they call an advanced, or alternate version.  The usual version will over=
write IBM boot manager and 
wipe out your access to eCS.  That said, it is probably possible to use g=
rub to start eCS but if 
you already have eCS installed then why bother adding another layer=3F

When you install with the alternate Ubuntu you want to make sure you do n=
ot choose the easy install 
(if that is an option).  The easy install will wipe the boot manager.  Wh=
at you want to do is tell 
Ubuntu to load the boot loader into the / partition (the root partition o=
f the linux formated 
partition).  You also need to leave enough drive space to create a swap p=
artition.  I think the 
generally recommended size is the same amount as your RAM.  So if you hav=
e 1GB ram you would 
partition the remaining portion of your disk to freespace minus 1GB.  The=
n the last GB is available 
for Ubuntu install to format for a swap partition.

You disk *might* look something like this:

IBM Boot MGR.
eCS
Ubuntu partition (including grub located here)
Swap partition

The important part is that you force grub to install in the Ubuntu root.

Most (but not Ubuntu) linux distro's have a custom (or advanced) install =
which is necessary to 
select to get the option to put the boot loader into the root partition u=
sed by the distro.  But 
Ubuntu has a seperate distro that you have to download in order to get th=
is functionality.

Jon