Booting on raid1 rootfs

[BERTRAND Joël <joel.bertrand%systella.fr@localhost>]

        Hello,

	I'm trying to install NetBSD on a SS20. I have built a raid1 system as 
I have done on several sparc64 without any trouble. Now, system is on 
raid0a but when my SS20 tries to boot, I only obtain :

>> NetBSD/sparc Secondary Boot, Revision 1.15
>>.....
Booting netbsd
: trying netbsd.gz
Booting netbsd.gz
: trying netbsd.old
....

	I have seen that sparc supports raid1 rootfs, but how can I install 
bootblock ? I have tried in /dev/rsd1a and in /dev/rsd1c without any 
success.

        Any idea ? I have only found old articles that don't give any solution.

        Regards,

        JKB