Re: `"prefix" is not set` error message in early GRUB startup

[Seth Goldberg]

> however there's a problem -- if gzio does exist on the tftp server and it's 
> loaded, when we hit gzio during the grub_load_modules() iteration, a fatal 
> error occurs (we should be able to detect this and just ignore the fact that 
> the module as already been loaded).

  Sorry -- this is wrong.  If gzio is before normal on the mkimage command 
line, grub_dl_load()'s call of grub_dl_get() will return it and it will NOT be 
retrieved from the $prefix dir.

 --S