Table of Contents
Advertisement
Other Questions
Q
4GB memory is not recognized by Windows
correctly.
A
This is due to a limitation in 32bit operating systems that
exists in notebook computers of other manufacturers.
Although the address space of the 32bit operating system
is 2³²= 4294967296 = 4,096MB = 4GB, all of it cannot
be allocated to memory, as some of it needs to be used
for other purposes by the operating system. Because
approximately 1GB of address space needs to be allocated
to other system resources such as the BIOS, PCI Device,
and VGA for a PC to operate normally. Therefore, even if
4GB of physical memory is installed, the address space
allocated to memory is limited to approximately 3GB.
Although users can upgrade their memory to 3 or 4GB,
only 3GB is recognized even when 4GB of memory
is installed, and a memory upgrade to 4GB is not
recommended.
166
Advertisement
Table of Contents
