[X4U] Lesson Learned

[Jon Warms]

Lee-

You were still using the internal ram memory boards when you started
up from the external drive. The external drive is just a hard drive  
(with
some internal cache) and it doesn't include anything that could replace
the memory boards in the PB. While you were working from the external
drive, it would have been interesting to see how much memory the PB
thought it had. Perhaps just one board was loose, but that was the one
wanted by the internal HDD. I don't know what else would make sense.

Except for just randomness.

Happy holidays back to you.

Jon

On Dec 15, 2008, LA Licata <lalicata at alum.rpi.edu> wrote:

> Starting up from an external drive, (using the cmd-opt-
> shift-delete shortcut) got the machine up and running. Ran disk
> utilities, disk warrior, tech tools all multiple times and while I
> found some problems, none reached out and touched me as being the  
> cause.
>
> Restarted off of the internal hard drive and within minutes, the
> dreaded black box shows up.
>
> Restarted off the external drive, and there is the box........
>
> Shut down the PB, and removed the battery to reset NVRAM (?) per
> apple's tech note..... While the battery was out, I remembered from
> somewhere that if RAM is not firmly seated, the PB could act flaky.