Hi, I've recently gotten interested in assembly so I've gotten to explore the core of my system and memory on ubuntu. I installed it via wubi-installer, I have a HP g-series notebook with Windows Vista dual booted. Anyway, after getting into it I found out that my ubuntu is a x86/64-bit system. Due to my registers being rax, rex etc. But on my windows vista system it says 32 bit. I don't really understand what's going on. To tell you the truth I would like to experiment with this stuff on a 64 bit linux system. But I'm not sure what's going on really, I'm kind of new to linux in general. I'm trying to set up a virtual machine that's 32 bit but I don't know if it's gonna work, what kind of system will it be? And can someone give me some info on exactly what kind of system I have and how I can get a 32 bit version of ubuntu. Thanks.

This is nothing unexpected,

Windows installations, more so from suppliers still tend to be 32-bit these days even when the CPUs they are on support 64-bit. If Ubuntu is 64 bit then it's likely you have a x86-64 CPU, this instruction set was created by AMD but is also in use by Intel and allows for native running of both 64 and 32 bit OSs. In Ubuntu you should be able to run the command "uname -a" from this we can confirm if your system is really 64 bit, you could also check out the CPU information from Bios and compare it up to the manufacturer's website or see if Bios comments on it's instruction set type.