# boot0cfg -o noupdate -s 1
Now when you choose to hit slice 2, it is only for a this one boot.
Next and each boot, defaults to slice 1
Problem is, that you must see, early bootstrap, to manually choose, so this won't work on a remote server.
a) physicall access
b) ssh access to the remote box, which is conected via serial cable, to your server.
Anyone has any idea, for a case of a remote server, which is accessible over ssh, only when it is "up"?