[Duo2400] STILL NEED TECH SUPPORT HELP!!!!! memory problem?UPDATED

[tom bonacci]

I went through similar problems with memory in a PB2400.  I purchased a
64MB card from an authorized Apple dealer and they forcefully maintained
it was compatible with the PB2400.  I installed it in two different
PB2400s and it worked in neither - both showed only 16mb after booting
(MacOS 8.0).  The Apple dealer then swapped the 64mb card for another
but it, too, did not work in either PB2400.  When I insisted on a
refund, the Apple dealer's tech folks were grumbling that both my 2400s
must be damaged in some way.

I then ordered a 64mb card from DMS (www.datamem.com) and it worked
perfectly in both PB2400s.

Here's the deal:  Although they are physically identical, the memory
compatible with the original iBook is not electrically compatible with
the PB2400.  You may have an iBook memory card which is simply
incompatible with your PB2400.

The MacOS 8.6 Installer insists that there be at least 24mb of RAM in
the machine before it will allow an installation.  I've never tried to
boot a machine with 16mb and MacOS 8.6 but I wouldn't be surprised if it
would bomb.  You may have a combination of two problems here - first you
need to install memory which can be recognized by the Mac and then and
only then can you install and boot with MacOS 8.6.  If your machine has
only 16mb of useful memory, then you'll need to boot with MacOS 8.0 or
other System capable of running within 16mb.

-tom


Paul Miller wrote:
> 
> ...  I left the
> new 64mb card in (only reads 16mb) and tried to boot
> from SCSI CDROM only to get the big BOMB error (a
> system error occured restar holding the shift key).
> The CDrom is spinning at this point.
> 
> Lest anyone thinks that this is a problem with my SCSI
> setup, don't.  While in the with extensions off and
> not enough memory to open anything (16mb on board seem
> to be recognized) the os8 cd mounts on the desktop and
> i can open the file and even read the instructions..so
> it does work.
> 
> I have a feeling that while this could be a physical
> problem the the memory connection (maybe the board was
> so hot from the daughtercard and hard drive -I thought
> the original crash was thermal related- thatsomething
> lifted off and I just can't see it) it sounds like a
> CPU problem may be the cause.
> 
> This theory from a non-technical nobody.
> 
> Could the 96mb card still be okay and the computer
> daughtercard be bad?
> 
> Hmmmm...any thoughts?
> PJM
>