External Hard Drive with Ubuntu 5.1

[Gary W. Swearingen]

"Ian Kabeary" <omega21 at gmail.com> writes:

> Hi there,
> I was wanting to play around with Ubuntu, without removing Gentoo or
> Windows. I put it onto my external USB hard drive,
> and installed grub to /dev/sda. Im not sure if my laptop (Toshiba Satellite
> A70) supports booting from USB, so I was wondering
> if I could add something to my grub.conf file for the installation grub has
> on my MBR so that it would boot my external USB?

Learn to run the grub boot loader from its command line.  That is,
when it presents it's menu, you switch into command mode, and request
help.  You have to learn how it designates disks, partitions, etc.
It's handy, because you can, say, set the "root" disk, and then type
"file " followed by a "/" and then hit the tab key, and it will show
you all the files in the root directory of the root disk you set.  And
hitting "tab" whild setting the root disk will show you all of the
disks that you can set (ie, that grub can boot from).