On 7/16/02 9:40 AM Gerard.Mittaux-Biron edified us all by writing:
> I am trying to install a 256 Mb RAM on the lower slot of a=20
>PowerBook Wallstreet (second generation, I think), which already has a
>128 Mb on the upper slot.
> But when I switch the machine on again, Apple system profiler
>(either on OS 9 or X) only detects 256 Mb... Until now, I thought that
>256+128 would be around 384, a little bit far from 256.
> I heard about problems sometimes ago with installing RAM bigger
>than 128 Mb on powerbooks, could this be my problem ?
Have you checked with Apple System Profiler on what speed(s) your two RAM
modules are? I don't know that the Wallstreet works like the Pismo in
that respect, but I found that if the lower RAM is faster, the (slower)
upper RAM won't be recognized by the system (because it's slower,
maybe?). When I put the slower RAM in the lower slot, the system would
"see" both modules and the memory would work okay.
After writing this, I saw Andrew's comments (that the lower slot only
takes 128MB), so that is another factor (hope your 128 isn't slower than
the 256).
HTH,
Jim Rohde
You have to recognize that every out-front maneuver you make is going to
be lonely. But if you feel entirely comfortable, then you are not far
enough ahead to do any good. That warm sense of everything going well is
usually the body temperature at the center of the herd.
- John Masters
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