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Re: How to identify 32 or 64 bits -



On Thu, 2009-12-17 at 18:20 +0530, Rahul Sundaram wrote:
> On 12/17/2009 06:11 PM, Bob Goodwin wrote:
> > 
> >    Can someone tell me how to determine if a computer can run 64 bit
> >    Fedora?
> > 
> >    I have two similar Dell desk top computers with what appears to be
> >    the same processor, one of which has had F-12 64 bit installed on it
> >    and seems to be happy. I always assumed they were 32 bit computers
> >    and really don't care which they are but wish to avoid using the
> >    b.w. to download another copy of F-12.
> > 
> >    I need to know before I can upgrade the second one.
> > 
> >    Thanks.
> > 
> >    Bob
> > 
> 
> As I indicated in the other thread,
> 
> # grep lm /proc/cpuinfo
> 
> If it returns nothing, your system is 32-bit.

But the converse is not necessarily true, e.g. on my 32-bit Asus netbook
I get:

bash-4.0$ grep lm /proc/cpuinfo
flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl est tm2 ssse3 xtpr pdcm movbe lahf_lm
flags           : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc arch_perfmon pebs bts pni dtes64 monitor ds_cpl est tm2 ssse3 xtpr pdcm movbe lahf_lm
bash-4.0$

(the lahf_lm flag matches, though I've no idea what it means).

poc


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