Stubborn Sun Ultra Enterprise 2

[retrobitsnbytes]

Greetings !!! So I have a question maybe someone has some insight.

I have a Sun Ultra Enterprise 2. I replaced the NVRAM (M48T59Y-70PC1), programmed it and was able to boot, install the OS on it and it was working great. Now when it boots it does not get past the banner.

[-] I see that the programming persists; i.e. The mac address remains in NVRAM and there are no errors.
[-] With Diag-Switch is enabled, I connected via a serial port and monitored the diagnostics information the system generates before getting to the banner, no errors.
[-] If I press Stop+A I am able to probe-scsi-all and it lists all available SCSI devices; 2 drives and on CD-ROM. I've taken
[-] I Removed both drives and it still doesn't get past the banner
[-] I had upgraded the memory to the max of 2gb for this model. I removed the memory in 512mb increments and retested each time. The result is the same, I see the mac address still programming in the NVRAM, however it still doesn't get past the banner.

Several other NVRAM chips were tried with same result. Besides the possibility that the motherboard suddenly went bad, has anyone else experienced something similar?

 

[pkhoury]

That's odd. Wish I could offer a suggestion, as I have two Ultra 2 Enterprises. My only issue is that the power supply on one of mine went bad, and it'd shut off at random times. So even if you stop-a, it won't let you boot manually, even if it needs to continue testing/initializing memory?

 

[tokenalt]

You say it doesn't get past the banner but what exactly does that mean? What does it do, what does it say, what error messages does it print?

 

[commodorejohn]

If you use the serial console, is there any additional chatter?