booting from usb?

[Justin Cormack]

On Wed, 2003-01-01 at 22:22, Lee Causier wrote:
> I would say that you would need to use a linux kernel with usb support 
> in to either (depending on what you're aiming at) load another kernel 
> and initrd from a USB device, the bootstrap that (more flexible) or just 
> boot, mounting the appropriate USB device as / - safer I would guess 
> (not sure) as you can always put in a CD with a working software set,
> 
> Bear in mind I may be wrong on this, I'm no expert, so as always, YMMV.
> Nicholas Mistry wrote:
> 
> >As being a novice when it comes to linuxbios, i was wondering what would
> >need to be done to have linuxbios be able to boot from a usb device?
> >
> >IE:  usb cdrom, usb HD, usb CF reader, usb pen drive, etc....
> >
> >Is this something that would have to be done (or would be better
> >accomplished) after linux loads its usb drivers, etc.. ?

If you can, do it after Linux has booted, when it should be easy. But if
necessary you could write a usb storage driver for etherboot. I dont
know enough about usb to know how much of a minimal driver you need (can
you write a polled only driver?).