Starting with the HURD: booting the system

[German Fabregat]

Dear all.

	Sorry for adding noise to the list. I'm planning to use Mach-HURD for 
teaching operating systems, and I am experiencing problems booting the 
system. I've just installed the HURD and generated a GRUB script 
according to the guidelines found at the Debian project page:

kernel (hd0,6)/boot/gnumach.gz root=device:hd1s7 -s
module (hd0,6)/hurd/ext2fs.static 
--multiboot-command-line=${kernel-command-line} 
--host-priv-port=${host-port} --device-master-port=${device-port} 
--exec-server-task=${exec-task} -T typed ${root} $(task-create) 
$(task-resume)
    [Multiboot-module  0x1c4000, 0x2cfe6a bytes]
module (hd0,6)/lib/ld.so.1 /hurd/exec $(exec-task=task-create)
    [Multiboot-module  0x494000, 0x27afe bytes]


Everything seems to go all right, as modules are loaded and no error 
messages are displayed anywhere on the screen, but the system remains as 
blocked, and no activity from the keyboard is reflected anyhow on the 
screen. Only the num lock light reacts to its key as expected...

Any hint about what I have done wrong or what to do right now?

Thank you very much for your help.

---
Germán Fabregat.