Michael,

Linux is nothing if not a chatty beast ;-)

To find out everything you every wanted to know about your CPU, you can
look at /proc/cpuinfo.

My system I am on right now is a System76 Lemur, and it runs a I3
mobile.  If I look in that file, I will see:

vendor_id	: GenuineIntel
model name	: Intel(R) Core(TM) i3 CPU       U 330  @ 1.20GHz
cpu MHz		: 1199.000

among other things.  But the real keys to the kingdom is a field called
FLAGS.

flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov
pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx
rdtscp lm constant_tsc arch_perfmon pebs bts rep_good nopl xtopology
nonstop_tsc aperfmperf pni dtes64 monitor ds_cpl vmx est tm2 ssse3 cx16
xtpr pdcm sse4_1 sse4_2 popcnt lahf_lm arat dts tpr_shadow vnmi
flexpriority ept vpid

You Google those flags and you will find out EXACTLY what your CPU does
and does not support.  So, to answer your question specifically, I look
in the flags and see a flag "lm", which stands for "long mode" which is
uber-geek speak for 64bit mode.

And sure enough, my system is running Ubuntu 11.10 in 64 bit mode.

Hope this Helps
Kevin



On Thu, 2011-12-01 at 12:38 -0700, Michael Havens wrote:
> 1- I D/L a distribution 
> 2- because I have no RW DVDs I burn the CD version
> 3- I install the CD version
> 4- After running the the install there is an ICON that says 'upgrade
> to the DVD' so I upgrade
> 5- my system starts to panic when running off of the battery so it is
> wisely suggested to upgrade  my kernel.  So I am doing so it asks me
> what kernel I am running. It had been said on the list that my kernel
> is the 64 bit kind but when I tried to upgrade to the 64bit kernel the
> computer complained and said 'wrong architecture'.
> 6- I installed the kernel for the i386 and have been happily running
> it now for a couple of days
> 
> Questions:
> Was I supposed to do something to make it see that it is a 64? 
> Would it run if an i386 was installed on a 64?
> Does it really matter?
> --
> :-)~MIKE~(-:
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