For every operation/work in Linux there will be one command, this is true most of the time (all you need is to find that command). How to get BIOS info without rebooting the system? The command for this is dmidecode(DMI table decoder). Some times BIOS is called as DMI too. Just execute the command, It will just dump lots and lots of information about the system hardware. dmidecode not only give BIOS info it will give all the hardware detail present in the machine.
luca@LucaPC ~ $ sudo dmidecode
# dmidecode 2.12
SMBIOS 2.4 present.
24 structures occupying 1078 bytes.
Table at 0x000E2C80.
Handle 0x0000, DMI type 0, 24 bytes
BIOS Information
Vendor: Hewlett-Packard
Version: F.32
Release Date: 03/19/2008
ROM Size: 1024 kB
Characteristics:
PCI is supported
BIOS is upgradeable
BIOS shadowing is allowed
Boot from CD is supported
Selectable boot is supported
BIOS ROM is socketed
EDD is supported
Japanese floppy for NEC 9800 1.2 MB is supported (int 13h)
Japanese floppy for Toshiba 1.2 MB is supported (int 13h)
5.25″/360 kB floppy services are supported (int 13h)
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)
8042 keyboard services are supported (int 9h)
CGA/mono video services are supported (int 10h)
ACPI is supported
USB legacy is supported
Targeted content distribution is supported
BIOS Revision: 1.6
Firmware Revision: 1.1
Handle 0x0001, DMI type 1, 27 bytes
System Information
Manufacturer: Hewlett-Packard
Product Name: HP G7000 Notebook PC
Version: F.32
Serial Number: CND8185B6D
UUID: 8F54A4A2-1166-11DD-8019-001EEC2B3708
Wake-up Type: Power Switch
SKU Number: KY227EA#ABU
Family: 103C_5335KV
Handle 0x0002, DMI type 2, 16 bytes
Base Board Information
Manufacturer: Hewlett-Packard
Product Name: 30D9
Version: 83.21
Serial Number: CND8185B6D
Asset Tag: Base Board Asset Tag
Features:
Board is a hosting board
Board is replaceable
Location In Chassis: Base Board Chassis Location
Chassis Handle: 0x0003
Type: Motherboard
Contained Object Handles: 0
Handle 0x0003, DMI type 3, 22 bytes
Chassis Information
Manufacturer: Hewlett-Packard
Type: Notebook
Lock: Not Present
Version: N/A
Serial Number: None
Asset Tag: Not Specified
Boot-up State: Safe
Power Supply State: Safe
Thermal State: Safe
Security Status: None
OEM Information: 0x00000104
Height: Unspecified
Number Of Power Cords: 1
Contained Elements: 0
SKU Number: Not Specified
Handle 0x0004, DMI type 9, 13 bytes
System Slot Information
Designation: PCI Express Graphic X16
Type: x16 PCI Express
Current Usage: Available
Length: Other
ID: 0
Characteristics:
PME signal is supported
Hot-plug devices are supported
Handle 0x0005, DMI type 9, 13 bytes
System Slot Information
Designation: PCI Express-0
Type: x1 PCI Express
Current Usage: Available
Length: Other
ID: 0
Characteristics:
PME signal is supported
Hot-plug devices are supported
Handle 0x0006, DMI type 9, 13 bytes
System Slot Information
Designation: PCI Express-1
Type: x1 PCI Express
Current Usage: Available
Length: Other
ID: 1
Characteristics:
PME signal is supported
Hot-plug devices are supported
Handle 0x0007, DMI type 9, 13 bytes
System Slot Information
Designation: PCI Express-2
Type: x1 PCI Express
Current Usage: Available
Length: Other
ID: 2
Characteristics:
PME signal is supported
Hot-plug devices are supported
Handle 0x0008, DMI type 9, 13 bytes
System Slot Information
Designation: PCI-0
Type: 32-bit PCI
Current Usage: Available
Length: Long
ID: 3
Characteristics:
5.0 V is provided
3.3 V is provided
Cardbus is supported
Modem ring resume is supported
PME signal is supported
SMBus signal is supported
Handle 0x0009, DMI type 9, 13 bytes
System Slot Information
Designation: PCI-1
Type: 32-bit PCI
Current Usage: Available
Length: Long
ID: 4
Characteristics:
5.0 V is provided
3.3 V is provided
Cardbus is supported
Modem ring resume is supported
PME signal is supported
SMBus signal is supported
Handle 0x000A, DMI type 10, 6 bytes
On Board Device Information
Type: Video
Status: Enabled
Description: Intel Video Graphics Controller
Handle 0x000B, DMI type 11, 8 bytes
OEM Strings
String 1: $HP$
String 2: LOC#ABU
String 3: ABS 70/71 79 7A 7B 7C
Handle 0x000C, DMI type 15, 29 bytes
System Event Log
Area Length: 32672 bytes
Header Start Offset: 0x0000
Data Start Offset: 0x0000
Access Method: General-purpose non-volatile data functions
Access Address: 0x0000
Status: Valid, Not Full
Change Token: 0x12345678
Header Format: OEM-specific
Supported Log Type Descriptors: 3
Descriptor 1: POST memory resize
Data Format 1: None
Descriptor 2: POST error
Data Format 2: POST results bitmap
Descriptor 3: Log area reset/cleared
Data Format 3: None
Handle 0x000D, DMI type 32, 20 bytes
System Boot Information
Status: No errors detected
Handle 0x000E, DMI type 4, 35 bytes
Processor Information
Socket Designation: CPU
Type: Central Processor
Family: Pentium M
Manufacturer: Intel(R) Corporation
ID: FD 06 00 00 FF FB EB BF
Signature: Type 0, Family 6, Model 15, Stepping 13
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) Dual CPU T2370 @ 1.73GHz
Voltage: 1.6 V
External Clock: 533 MHz
Max Speed: 1733 MHz
Current Speed: 1733 MHz
Status: Populated, Enabled
Upgrade: Socket 478
L1 Cache Handle: 0x0011
L2 Cache Handle: 0x000F
L3 Cache Handle: Not Provided
Serial Number: NotSupport
Asset Tag: FFFF
Part Number: FFFF
Handle 0x000F, DMI type 7, 19 bytes
Cache Information
Socket Designation: Unknown
Configuration: Enabled, Not Socketed, Level 2
Operational Mode: Write Back
Location: Internal
Installed Size: 1024 kB
Maximum Size: 1024 kB
Supported SRAM Types:
Asynchronous
Installed SRAM Type: Asynchronous
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Unified
Associativity: 4-way Set-associative
Handle 0x0010, DMI type 7, 19 bytes
Cache Information
Socket Designation: Unknown
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 32 kB
Maximum Size: 32 kB
Supported SRAM Types:
Asynchronous
Installed SRAM Type: Asynchronous
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Instruction
Associativity: 8-way Set-associative
Handle 0x0011, DMI type 7, 19 bytes
Cache Information
Socket Designation: Unknown
Configuration: Enabled, Not Socketed, Level 1
Operational Mode: Write Back
Location: Internal
Installed Size: 32 kB
Maximum Size: 32 kB
Supported SRAM Types:
Asynchronous
Installed SRAM Type: Asynchronous
Speed: Unknown
Error Correction Type: Single-bit ECC
System Type: Data
Associativity: 8-way Set-associative
Handle 0x0012, DMI type 16, 15 bytes
Physical Memory Array
Location: System Board Or Motherboard
Use: System Memory
Error Correction Type: None
Maximum Capacity: 2 GB
Error Information Handle: Not Provided
Number Of Devices: 2
Handle 0x0013, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0012
Error Information Handle: Not Provided
Total Width: 64 bits
Data Width: 64 bits
Size: 2048 MB
Form Factor: SODIMM
Set: None
Locator: DIMM0
Bank Locator: BANK 0
Type: DDR2
Type Detail: Synchronous
Speed: 533 MHz
Manufacturer: 0xFFFFFFFFFFFFFFFF
Serial Number: 0xFFFFFFFF
Asset Tag: Unknown
Part Number: 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF
Handle 0x0014, DMI type 20, 19 bytes
Memory Device Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x0007FFFFFFF
Range Size: 2 GB
Physical Device Handle: 0x0013
Memory Array Mapped Address Handle: 0x0016
Partition Row Position: 1
Handle 0x0015, DMI type 17, 27 bytes
Memory Device
Array Handle: 0x0012
Error Information Handle: Not Provided
Total Width: Unknown
Data Width: Unknown
Size: No Module Installed
Form Factor: SODIMM
Set: None
Locator: DIMM2
Bank Locator: BANK 2
Type: DDR2
Type Detail: None
Speed: Unknown
Manufacturer: NO DIMM
Serial Number: NO DIMM
Asset Tag: NO DIMM
Part Number: NO DIMM
Handle 0x0016, DMI type 19, 15 bytes
Memory Array Mapped Address
Starting Address: 0x00000000000
Ending Address: 0x0007FFFFFFF
Range Size: 2 GB
Physical Array Handle: 0x0012
Partition Width: 4
Handle 0x0017, DMI type 127, 4 bytes
End Of Table