Booting 2400Turbo

[paulf]

In article <1991Feb27.200643.10956 at Neon.Stanford.EDU> loan at Neon.Stanford.EDU (James P. Loan) writes:
>I am having trouble booting our 2400T workstation. It was running
>fine, and sitting unused for several days. At some point it just
>stopped: the console went blank and we couldn't login remotely.
>I reset the machine and tried booting again ("b" from the "iris>"
>prompt). It starts to boot, gives the "Loading: hd.0:defaultboot"
>message, then after a few more lines, the 
>"Jumping to loaded program @ 20000400" message, then hangs right there.
>I tried to boot off a tape, following the directions in the manual,
>but it hung at the same point after seeming to load the tape correctly.
>Does anyone know what might be the problem?

Uh oh.  I had a similar problem when I bought my 2400T a few months ago.
The machine would come up under the boot prom, load the system, jump, and
go blank.  It turns out that the boot code uses a different video
path than the operating system; in particular, the boot code will still 
work if the frame buffer / GE card GF2 is bad.  The fix, of course,
is to get a new GF2 board...


-=Paul Flaherty, N9FZX      | "Think of it as evolution in action."
->paulf at shasta.Stanford.EDU |       -- Larry Niven and Jerry Pournelle