Hello,
I'm having trouble installing my opensuse11.1 into usb.

I have searched this forum and may others and googled for a week but whatever I came across, they are of no help to me...
I cant find a complete and clear solution so far so if any good friends here who would like to help this very n00b to help install opensuse to usb hard disk, please help me...

So, to the problem...
I have a clean and beautiful installation of opensuse11.1 on my internal harddisk. its working without any problems. So I thought of backing it up in a USB harddisk so that if in any case I have to reinstall my system, I can restore it from my usb disk. So searching in the opensuse forums, someone said that i could use yast-live-installer to install my current system to a usb drive.
I installed my live-installer and initiated the (live) installation of opensuse and it went OK till the installation settings window came (after copying root filesystem and all),
it showed like installing boot manager and after a few seconds poped up with a dialog saying
Grub Error :17

And asked whether I need to reconfigure the boot manager settings and I said yes and choose the same settings again and it installed all right then. And told me to reboot the system to finish the installation. BTW I choose to boot from root partition and also marked this partition as active(boot loader options).

But the problem is I cannot boot from USB drive as the grub says
GRUB ERROR: 22

And it just hangs there and I cannot press any keys other than ctrl+alt+del

Thats my story....
And What I infer is grub is in a confusion about the disks and I'm in a confusion how to resolve its confusion...

If you need any fdisk or some other output let me know...

Please.... I really need opensuse in my USB drive and It should work from any computer..... So any help to get it to work...??
I'm a new user of opensuse but I'm in love with it within this short time

Please note that installation went all right but in case of the bootloader, i have doubt.

Sorry for such a boring long post but i just want you to understand my pitty situation...