Hello, I have a Lenovo/IBM T-60 which has 4GB of RAM. The problem is that windows xp will only recognize 3.3GB. I tried adding the /3GB to the boot name but it didn´t work. Any ideas?
Have you tried the /PAE switch set in the boot.ini file ? http://www.microsoft.com/whdc/system/platform/server/PAE/PAEmem.mspx
not to hijack a thread or anything, but im having a similiar problem as the origonal poster, only im using vista. i have 4 gigs in my pc but its only seeing 2.75 of it. i believe i read somewhere that vista will only see a max of 3 gigs in a 32 bit version of it, which is fine with me. i would just like ot know how to get it to see the other .25 gigs of it. when i go into bios it recognizes the 4 gigs, as does a couple of other programs in the computer, but on my sidebar, and welcome screen it only says 2.75 gigs.
Even if you get the boot.ini switches right, you have to remember that not all motherboard chipsets will let Windows see 4 GB.
/PAE didn´t do anything, at windows logon it gets really slow so I turned off the /PAE switch. I read around and I think you just can´t make windows recognize 4GB. No even in vista. Only 64 bit versions of windows XP & Vista will let you see more ram.
Some motherboards have chipset reservations that can cause up to 1 GB to disappear on a system with 4GB. This is a hardware limitation, not a 32 bit Windows limitation. Also certain BIOS settings can take memory out of the last 1 GB. Even without chipset reservations, Windows XP Pro+SP2 32-bit version can use 4 GB Ram. As it starts it uses 0.5 GB and therefore shows 3.5 GB available. But it actually "using" the whole 4 GB.
Actually...... it's both. 32bit versions of Windows have a maximum usage of 4GB of memory. That also includes the pagefile, or virtual memory. Shutting that off, or setting it to 0, "might" sometimes allow you to see the whole 4GB of system memory in the system properties. But, more than likely, when you do use 4GB, Windows will allocate that memory to the physical devices in your machine...as Indochine mentioned. If it were a complete physical chipset limitation, you wouldn't even see your 4GB using a 64bit OS.
