brennan@dg-rtp.dg.com (David Brennan) (10/17/89)
I'm posting this for a friend, and don't normally keep up with this group, so please send any replies directly to me. The problem is that someone I know who has a 3b2 accidently deleted a file called "dgmon" from the root directory, which is appearently necessary for the system to come up correctly. A system failure occurs, but the firmware password isn't its default password, and there is no locatable floppy key, (since he and didn't get one from the guy he bought it from) so it seems to be impossible to get the system up. Is there any way to remedy this situation? Thanks Mail to: brennan@dg-rtp.dg.com -or- ...mcnc!rti!dg-rtp!brennan
heiby@mcdchg.chg.mcd.mot.com (Ron Heiby) (10/26/89)
You don't say what kind of 3B2 you're talking about. Maybe it doesn't matter. I left AT&T at about the time the model 600 was about to come out. Anyway, with at least the 300, 310, and 400 the NVRAM (where the firmware password is kept) is maintained by a battery. This was fairly easy to locate and was connected to the system board by a couple of wires with a connector at the system board end. If you remove the cover, you can get to the battery and the connecting wires. Remove them from the board for a minute (less time will probably work). Replace them with the same orientation! Now, you have a "virgin" NVRAM. The default firmware password will work just fine. Good luck. Have fun! -- Ron Heiby, heiby@chg.mcd.mot.com Moderator: comp.newprod "It is the province of knowledge to speak & the privilege of wisdom to listen"
jeff@carroll1.UUCP (Jeff Bartig) (10/30/89)
In article <27431@mcdchg.chg.mcd.mot.com> heiby@chg.mcd.mot.com (Ron Heiby) writes:
[suggests disconnecting the battery for a minute to wipe the NVRAM]
Two things I would like to add:
1) Your console should be set to SPACE parity. Your system might still
have the default password. It just won't work without space parity.
2) Don't forget to reset the date & time if you pull the battery. AT&T
did some work on our 3b2-700 recently that involved disconnecting the
battery, and they forgot to reset the time. It confused a few cron
scripts.
Jeff
--
Jeff Bartig, Carroll College | "The sooner you fall
jeff@carroll1.cc.edu | behind, the more time you
uunet!marque!carroll1!jeff | have to catch up."