How to find out your server can run 64 bit Kernel or not.

You can see detail in file /proc/cpuinfo. If you find “lm” (long mode) flag that mean your server can run 64 bit Kernal :D.


Example

processor : 0
vendor_id : GenuineIntel
cpu family : 15
model : 6
model name : Intel(R) Pentium(R) D CPU 3.40GHz
stepping : 4
cpu MHz : 2400.000
cache size : 2048 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 2
fdiv_bug : no
hlt_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 6
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe lm constant_tsc pni monitor ds_cpl vmx est cid cx16 xtpr lahf_lm
bogomips : 6787.68

Woww 😀

http://developer.intel.com/design/processor/applnots/241618.htm

http://processorfinder.intel.com/List.aspx?ProcFam=528&sSpec=&OrdCode