Mar 9, 2005, 11:30 PM
I have a 512 and a 256 installed into my iBook. However, when I go under "about this mac" it says I only have a total of 640. How do I get the remaining RAM back?
Mar 9, 2005, 11:37 PM
Which iBook is it?
How do you know your internal RAM is 256?
There is only one memory socket, so your options are 128 built in + 512 = 640 or 256 built in + 512 = 768.
If it is an iBook G3, chances are your 256 Mb RAM was 128 built in + 128 , the 128 SODIMM was removed to make room for the 512, so you now have 128 + 512.
What does Apple System Profiler say?