After Bootcamp - RAM is Hiding?

[uMac]

I've installed XP Home on my Mac Pro and after the Install everything is running fine except the computer cannot see all the ram I have (I think it only sees the first chip)

Suggestions?

 

[VoidBoi]

Depending how much RAM you have, XP Home may not be able to see all of it.

 

[uMac]

Depending how much RAM you have, XP Home may not be able to see all of it.

Well right now it only sees 2 GB, and my computer has like 9GB.

 

[Neil321]

Well right now it only sees 2 GB, and my computer has like 9GB.

If its 32bit i think that's were the issue lies

 

[JNB]

I don't feel like rebooting right now to verify, but I believe that the max RAM in Windows (32-bit) was 2.196 GB

 

[uMac]

I've been reading that XP can take a maximum of 4GB, is that True?

 

[uMac]

I don't feel like rebooting right now to verify, but I believe that the max RAM in Windows (32-bit) was 2.196 GB

2^32 = 4.29GB, so the max is 4GB

 

[weg]

2^32 = 4.29GB, so the max is 4GB

Theoretically, yes, but a large part of the 4GB is reserved for the operating system, so there are only 2GB available for the applications. He'll need the 64bit version of Windows XP or Vista 64.

 

[CanadaRAM]

32 bit Windows can theoretically address up to 4 GB BUT hardware addressing limitations mean that the total available to the OS is somewhere between 3.0 and 3.5 GB. On a PC, Windows itself will report 3 GB available (the space above 3 GB is used for drivers and resources), and the most available to a single application is 2 GB.

Under Bootcamp, 32 bit Windows is restricted to 2 GB RAM regardless how much extra is in the Mac. This is an issue with the Mac's firmware/EFI. Scattered people have reported seeing 3 GB on MacBook Pros, but it is unclear whether this is an artifact of the Windows utility used to report the RAM size or not. (The addressable RAM is not affected by the /3GB and /PAE switches in Windows, as meny have posted without trying it -- these are for allocation of memory to applications within Windows.)

 

[JNB]

2^32 = 4.29GB, so the max is 4GB

I was referring to a BC environment, I thought that was understood. Sorry for the confusion. CanadaRAM has the more detailed explanation.

 

[uMac]

I was referring to a BC environment, I thought that was understood. Sorry for the confusion. CanadaRAM has the more detailed explanation.

Okay, thanks for the Info.

 

[fuzzielitlpanda]

32 bit versions of windows will see only up to 3gb of ram. if you plan on installing anything greater than that, run a 64 bit version.