In article <199705182243.TAA03299@borges.uol.com.br>,
	danielh@uol.com.br writes:
> Until yesteray, all was working fine, but today, when I was trying to 
> put some users in the masterpwd.db file,

I hope you didn't edit directly? "vipw" is the correct tool for such
things.

> Now the system reboots fine but when the 
> password for root is asked I can't access the system anymore.

Boot to single user mode by enterning "-s" at the boot loader prompt.
If you didn't set the console to secure you'll be able to login. Type
"fsck -p" and "mount -av" afterwards and you should be able to maintain
your system.

-- 
Matthias Scheler                                http://home.pages.de/~tron/