Windows XP Pro SP3 32-bits on HW v7.0 with 4GB of memory

[dwchan]

Is there any reason, or technical limitation that prevent my Windows XP Pro SP3 32bits from detecting all of the 4.0GB assign to the hardware?  Not matter what switches I use within boot.ini (e.g. /3GB, /PAE, or both), task manager only showing it having 3GB.  I am using HW version 7.0 on ESXi 4.1 Any feedback would be appreicated

[nava_thulasi39]

Hi,

32bit OS has the maximum limitation of 4 GB. So the OS won't detect all 4 GB.

And this 4GB includes for  CPU cache, HD cache, DVD Drive cache, VGA memory, Memory loop hole, etc.

[dwchan]

I undertand, but with 4GB HW, it is only showing up as 3GB

[rajeshcloud]

windows xp 32 bit max ram limit is only 4 gb. but windows xp 32 bit dosen't use 4 gb, its support upto 3240mb. any windows 32 bit only support upto 3240mb. If you want to upto 4gb you need to edit /boot file.