Sun Ultra 1 questions

From: Geoff Reed <geoffr_at_zipcon.net>
Date: Mon May 17 15:08:10 2004

At 03:17 AM 5/17/2004, you wrote:

>At the moment it's set to boot from the network - any idea how I can
>interrupt that and get into the boot monitor in order to switch that
>off? I think there's some key combination to do it from a keyboard, but
>of course I don't have one handy at the moment - just the console.

if you are using a serial terminal send a break and it should drop you to
the OK prompt, and from there you can set the auto-boot? enviornment
variable to dalse and it will drop to the OK prompt on powerup.



>There's a clear perspex bracket above the CPU for holding a fan, but no
>fan. As this machine had been stripped before I got it, I don't know if
>it should have one and someone had taken it out. The CPU has a large
>finned heatsink on it - on the web I saw a vague report that Sun may
>have stopped putting fans in the machines on later ones and just used a
>larger heatsink. Any ideas?

IF it has the bracket for the fan, DO NOT RUN IT WITHOUT THE FAN. you WILL
fry the CPU. find a fan of appropriate size and install it. the newer
heatsinks are as taller and have a thin plastic ducting on them to channel
air from the fan in the powersupply over to cool the CPU



>Finally, any clue as to whether the Apple SCSI CDROM I got will work in
>the Ultra? It's a 1993 vintage drive, an "AppleCD 300 Plus". If not, I
>do have a SCSI drive that'll do both 512 and 2048 block sizes, but it's
>in a running machine at the moment...

Ok, with solaris 7 and newer it -should- be able to boot. Ultras are still
supported in solaris 8 IIRC and you can get it free from sun (download ISO
images and burn them)




>No idea why this machine was thrown out. It seems to work so far. Maybe
>it has an intermittant fault when it's been running for a while, or
>maybe the network interface is dead (according to console messages it
>notices when a cable's present or not though).
>
>cheers
>
>Jules
Received on Mon May 17 2004 - 15:08:10 BST