install opensuse 11.4 to an external hard-drive

I installed opensuse 11.4 to an SD card through usb card reader and the boot from the card failed with “error 21” from GRUB. But I can boot from it when I put it in the SD card slot in another CPU.

I know there are guides how to create live usb flash drives for opensuse 11.4, but I am interested to know is it possible to install opensuse direct from installation DVD to an external USB drive?

There seem to have been a HOW-TO on this in, but now the page has been removed. Is it not supported any longer?

Here is the url for the openSUSE instructions on installing to an external drive:

SDB:Installation on external hard drive - openSUSE

Worked great for me - I was very surprised at how fast 11.4 is on an external USB drive. I loaded it on my Dell laptop. Be very careful about the Grub settings.