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| Hardware & Laptops Help with your hardware, including laptop issues |
23rd March 2005, 03:07 PM
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Registered User
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Join Date: Oct 2004
Posts: 24
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CPU/mother board serial number
Is there any system call I can use to get the CPU or mother board serial number ?
I am trying to get a unique identifier of a machine.
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23rd March 2005, 05:43 PM
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Join Date: May 2004
Location: NJ
Posts: 913
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Your best bet is probably to create a unique signature on each machine:
dd if=/dev/random of=thisMachine bs=128 count=1
Alternatively, you could use the MAC address of the first NIC in the machine:
ip link show
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23rd March 2005, 05:57 PM
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Actually there are a couple of instructions to get the serial number for the CPU in Pentium III's and above. I think they're covered in some of the instruction set guides that Intel put out. I'm not sure what AMD does that might be similar, or they emulate the behavior. Intel took alot of crap for this in the press a few years ago.
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23rd March 2005, 06:10 PM
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Retired Community Manager
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Join Date: Apr 2004
Location: Slovenia
Age: 30
Posts: 1,713
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Some CPU info: 'cat /proc/cpuinfo' and 'cat /var/log/dmesg' or run '/usr/sbin/x86info'
For motherboard check the dmesg file, usually there is no motherboard info, mostly chipset.
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23rd March 2005, 06:27 PM
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Location: NJ
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The CPU serial number for Intel CPUs is usually disabled in the BIOS by most manufacturers, because of the negative feedback they received. AMD CPUs don't have a serial number reporting facility (at least it's not not in my BIOS, nor is it reported in /proc/cpuinfo).
The x86info utility isn't included in the x86_64 version of the kernel-utils package, so you can't rely on that (and it doesn't provide a unique identifier).
The NIC card HWADDR (MAC) is supposed to be unique, but it's actually not enforced or guaranteed.
That's why if you need a unique identifier, it's best to create one.
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23rd March 2005, 06:28 PM
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If the purpose is to keep track of The World, then I think The World is too big to keep track of. If you are trying to keep track of the machines on your own network, why not use the MAC addresses?
The best rule-the-World strategy would be to take a set of various non-unique pieces of information that are available about the machine and hash them into some sort of identifier that would have a large probability of being unique. The trouble with using things like the /proc/cpuinfo file is that someday someone might decide that this file needs a brand new format. So you would have to look at the source code for routines that interrogate the hardware and hope that no BIOS update to the motherboard would change the format of the hardware information.
__________________
"Never let the task you are trying to accomplish distract you from the study of computers."
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16th January 2012, 12:33 PM
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Join Date: May 2007
Posts: 47
 
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Re: CPU/mother board serial number
Hello ,
Sorry for bumping up a very old thread. I needed same information and this thread is coming up top almost in every search .
I have found the solution over lshw in bash , and it has a GUI for desktop environments too . Mainboard / CPU seial and loads of stuff . I thought it should be written here for later searches.
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18th January 2012, 07:26 PM
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Join Date: Dec 2010
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Re: CPU/mother board serial number
For recent 2.6.x kernels:
# cat /sys/devices/virtual/dmi/id/chassis_serial
# cat /sys/devices/virtual/dmi/id/board_serial
# cat /sys/devices/virtual/dmi/id/bios_version
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19th January 2012, 04:38 AM
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Join Date: Aug 2009
Posts: 6,612
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Re: CPU/mother board serial number
Quote:
Originally Posted by rtguille
For recent 2.6.x kernels:
# cat /sys/devices/virtual/dmi/id/chassis_serial
# cat /sys/devices/virtual/dmi/id/board_serial
# cat /sys/devices/virtual/dmi/id/bios_version
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Not always reliable 
Results of those commands on one of my systems here:
Code:
[root@tower20 default]# cat /sys/devices/virtual/dmi/id/chassis_serial
To Be Filled By O.E.M.
[root@tower20 default]# cat /sys/devices/virtual/dmi/id/board_serial
To be filled by O.E.M.
[root@tower20 default]# cat /sys/devices/virtual/dmi/id/bios_version
V4.7
[root@tower20 default]#
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19th January 2012, 09:27 AM
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Join Date: Apr 2006
Location: Ohio, USA
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Re: CPU/mother board serial number
If you are going to use MAC addresses - then keep in mind many systems have several enets and some could have none. For the multiple case you need to select a unique one among many, for example the smallest after a numeric sort.
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None are more hopelessly enslaved than those who falsely believe they are free.
Johann Wolfgang von Goethe
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19th January 2012, 10:39 AM
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Re: CPU/mother board serial number
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19th January 2012, 02:54 PM
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Administrator
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Join Date: Aug 2009
Posts: 6,612
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Re: CPU/mother board serial number
Interesting, DM...
I don't get any unique identifying information when I run that here...
Code:
# dmidecode 2.11
SMBIOS version fixup (2.31 -> 2.3).
SMBIOS 2.3 present.
57 structures occupying 2076 bytes.
Table at 0x000EF790.
Handle 0x0000, DMI type 0, 20 bytes
BIOS Information
Vendor: IBM
Version: 2AKT51AUS
Release Date: 07/06/2005
Address: 0xE4500
Runtime Size: 113408 bytes
ROM Size: 512 kB
Characteristics:
PCI is supported
PNP is supported
APM is supported
BIOS is upgradeable
BIOS shadowing is allowed
ESCD support is available
Boot from CD is supported
EDD is supported
ACPI is supported
USB legacy is supported
AGP is supported
LS-120 boot is supported
Smart battery is supported
BIOS boot specification is supported
Handle 0x0001, DMI type 1, 25 bytes
System Information
Manufacturer: IBM
Product Name: 8189-NU7
Version: Not Specified
Serial Number: Not Specified
UUID: Not Specified
Wake-up Type: Power Switch
Handle 0x0002, DMI type 2, 8 bytes
Base Board Information
Manufacturer: IBM
Product Name: IBM
Version: Not Specified
Serial Number: Not Specified
Handle 0x0003, DMI type 3, 17 bytes
Chassis Information
Manufacturer: IBM
Type: Mini Tower
Lock: Not Present
Version: Not Specified
Serial Number: Not Specified
Asset Tag: ........................
Boot-up State: Safe
Power Supply State: Safe
Thermal State: Safe
Security Status: None
OEM Information: 0x00000000
Handle 0x0004, DMI type 4, 35 bytes
Processor Information
Socket Designation: WMT478/NWD
Type: Central Processor
Family: Pentium 4
Manufacturer: GenuineIntel
ID: 29 0F 00 00 FF FB EB BF
Signature: Type 0, Family 15, Model 2, Stepping 9
Flags:
FPU (Floating-point unit on-chip)
VME (Virtual mode extension)
DE (Debugging extension)
PSE (Page size extension)
TSC (Time stamp counter)
MSR (Model specific registers)
PAE (Physical address extension)
MCE (Machine check exception)
CX8 (CMPXCHG8 instruction supported)
APIC (On-chip APIC hardware supported)
SEP (Fast system call)
MTRR (Memory type range registers)
PGE (Page global enable)
MCA (Machine check architecture)
CMOV (Conditional move instruction supported)
PAT (Page attribute table)
PSE-36 (36-bit page size extension)
CLFSH (CLFLUSH instruction supported)
DS (Debug store)
ACPI (ACPI supported)
MMX (MMX technology supported)
FXSR (FXSAVE and FXSTOR instructions supported)
SSE (Streaming SIMD extensions)
SSE2 (Streaming SIMD extensions 2)
SS (Self-snoop)
HTT (Multi-threading)
TM (Thermal monitor supported)
PBE (Pending break enabled)
Version: Intel(R) Pentium(R) 4 CPU 2.80GHz
Voltage: 1.8 V
External Clock: 100 MHz
Max Speed: 3400 MHz
Current Speed: 2800 MHz
Status: Populated, Enabled
Upgrade: Socket 478
L1 Cache Handle: 0x0005
L2 Cache Handle: 0x0006
L3 Cache Handle: Not Provided
Serial Number: Not Specified
Asset Tag: Not Specified
Part Number: Not Specified
...... Lots of other things cut that pertain to cache, ports, etc... ...
Got me curious, so ran it on another machine here as well..
Still no unique identifying information:
Code:
# dmidecode 2.11
SMBIOS 2.6 present.
58 structures occupying 2067 bytes.
Table at 0x000FD2D0.
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: American Megatrends Inc.
Version: V4.7
Release Date: 07/28/2010
Address: 0xF0000
Runtime Size: 64 kB
ROM Size: 1024 kB
Characteristics:
ISA is supported
PCI is supported
PNP is supported
APM is supported
BIOS is upgradeable
BIOS shadowing is allowed
ESCD support is available
Boot from CD is supported
Selectable boot is supported
BIOS ROM is socketed
EDD is supported
5.25"/1.2 MB floppy services are supported (int 13h)
3.5"/720 kB floppy services are supported (int 13h)
3.5"/2.88 MB floppy services are supported (int 13h)
Print screen service is supported (int 5h)
8042 keyboard services are supported (int 9h)
Serial services are supported (int 14h)
Printer services are supported (int 17h)
CGA/mono video services are supported (int 10h)
ACPI is supported
USB legacy is supported
LS-120 boot is supported
ATAPI Zip drive boot is supported
BIOS boot specification is supported
Targeted content distribution is supported
BIOS Revision: 8.16
Handle 0x0001, DMI type 1, 27 bytes
System Information
Manufacturer: MICRO-STAR INTERNATIONAL CO.,LTD
Product Name: MS-7529
Version: 1.0
Serial Number: To Be Filled By O.E.M.
UUID: To Be Filled By O.E.M.
Wake-up Type: Power Switch
SKU Number: To Be Filled By O.E.M.
Family: To Be Filled By O.E.M.
Handle 0x0002, DMI type 2, 15 bytes
Base Board Information
Manufacturer: MICRO-STAR INTERNATIONAL CO.,LTD
Product Name: G31TM-P21 (MS-7529)
Version: 1.0
Serial Number: To be filled by O.E.M.
Asset Tag: To Be Filled By O.E.M.
Features:
Board is a hosting board
Board is replaceable
Location In Chassis: To Be Filled By O.E.M.
Chassis Handle: 0x0003
Type: Motherboard
Contained Object Handles: 0
Handle 0x0003, DMI type 3, 21 bytes
Chassis Information
Manufacturer: MICRO-STAR INTERNATIONAL CO.,LTD
Type: Desktop
Lock: Not Present
Version: 1.0
Serial Number: To Be Filled By O.E.M.
Asset Tag: To Be Filled By O.E.M.
Boot-up State: Safe
Power Supply State: Safe
Thermal State: Safe
Security Status: None
OEM Information: 0x00000000
Height: Unspecified
Number Of Power Cords: 1
Contained Elements: 0
Handle 0x0004, DMI type 4, 42 bytes
Processor Information
Socket Designation: CPU1
Type: Central Processor
Family: Unknown
Manufacturer: Intel
ID: F2 06 00 00 FF FB EB BF
Version: Genuine Intel(R) CPU 2160 @ 1.80GHz
Voltage: 1.3 V
External Clock: 200 MHz
Max Speed: 1800 MHz
Current Speed: 2400 MHz
Status: Populated, Enabled
Upgrade: Socket LGA775
L1 Cache Handle: 0x0005
L2 Cache Handle: 0x0006
L3 Cache Handle: 0x0007
Serial Number: To Be Filled By O.E.M.
Asset Tag: To Be Filled By O.E.M.
Part Number: To Be Filled By O.E.M.
Core Count: 2
Core Enabled: 2
Thread Count: 2
Characteristics:
64-bit capable
.... same as above, cut the other devices info ...
Last edited by DBelton; 19th January 2012 at 03:31 PM.
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19th January 2012, 05:43 PM
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Administrator
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Join Date: Aug 2007
Location: London Postbox (the red one)
Age: 47
Posts: 3,849
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Re: CPU/mother board serial number
Yeh it works on the dell but not on my main comp 
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