Installing ubuntu on external hard disk

[Jared Buck]

Okay, I tried that.  did all the commands up to making the .iso image
to burn onto a cd, i typed the command:

sudo mkisofs -R -b boot/grub/stage2_eltorito -no-emul-boot
-boot-load-size 4 -boot-info-table -o UbuntuBootCDForUSB.iso
 bootcd

I'm doing this from the home directory as that documentation
specifies.  (my home directory)

When I do that I get the message:

I: -input-charset not specified, using utf-8 (detected in locale settings)
Using MENU000.LST;1 for  bootcd/grub/menu.lst~ (menu.lst)
genisoimage: Uh oh, I cant find the boot image 'boot/grub/stage2_eltorito' !

When i change directory to move to the /bootUSBCD directory (which is
where the files for doing this are stored:


I: -input-charset not specified, using utf-8 (detected in locale settings)
Using MENU000.LST;1 for  bootcd/grub/menu.lst~ (menu.lst)
genisoimage: Uh oh, I cant find the boot image 'boot/grub/stage2_eltorito' !

Which creates the .iso file, but corrupts it so it can't be used.

Same message.  So now I move up to the bootcd directory inside this.
Only the /boot and /grub directories are inside it.

I: -input-charset not specified, using utf-8 (detected in locale settings)
genisoimage: No such file or directory. Invalid node - 'bootcd'.

Doesn't make the .iso file.

Am I doing something wrong here?  I want to make the .iso file so I
can boot into the ubuntu system on my external drive.  I've followed
the instructions at the link you gave me to the letter.

Jared








On 3/8/07, Alan Pope <alan at popey.com> wrote:
>  On Thu, Mar 08, 2007 at 01:01:11PM -0800, Jared Buck wrote:
> > Hi all,
> >
> > I'm wanting to install ubuntu on an external hard drive (which is designated
> > /dev/sda by the system), and partition it into two parts, an ext3 system and
> > a swap partition, the ext3 system is labled sda1.  Now, the installation
> > appeared to go well.  But when I try to boot into the ubuntu system on the
> > external drive, it gives me an error message:
>  >
> > ALERT! /dev/sda1 does not exist.  Dropping to a shell!
> >
>
> Take a look at this guide on the wiki:-
>
> https://help.ubuntu.com/community/BootFromUSB
>
> Especially the sections on grub.
>
> Cheers,
> Al.
>
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