[Narishma]

I think it's worse than that. It returns the max value (2GB) when there is more than 2GB but less than 4GB, but a negative value if there is more than 4GB.

[layer8]

This actually depends on the LARGEMEMORYAWARE flag, see https://ftp.zx.net.nz/pub/archive/ftp.microsoft.com/MISC/KB/....