System Administration Guide, Volume I

How to Display Device Information

Display device information with the dmesg command.

# /usr/sbin/dmesg

The dmesg output is displayed as messages on the system console and identifies which devices are connected to the system since the last reboot.

Examples--Displaying Device Information

The following dmesg output is displayed from a SPARC system.

# dmesg
SunOS Release 5.7 Version generic [UNIX(R) System V Release 4.0]
Copyright (c) 1983-1998, Sun Microsystems, Inc.
pac: enabled - SuperSPARC
cpu0: TI,TMS390Z50 (mid 8 impl 0x0 ver 0x0 clock 40 MHz)
mem = 32768K (0x2000000)
avail mem = 27803648
Ethernet address = 8:0:20:1f:33:9g
root nexus = SUNW,SPARCstation-10
iommu0 at root: obio 0xe0000000
sbus0 at iommu0: obio 0xe0001000
dma0 at sbus0: SBus slot f 0x400000
dma0 is /iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000
/iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000/esp@f,800000 (esp0):
	esp-options=0x46
esp0 at dma0: SBus slot f 0x800000 sparc ipl 4
esp0 is /iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000/esp@f,800000
sd1 at esp0: target 1 lun 0
sd1 is /iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000/esp@f,800000/sd@1,0
	sd3 at esp0: target 3 lun 0
sd3 is /iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000/esp@f,800000/sd@3,0
	root on /iommu@f,e0000000/sbus@f,e0001000/espdma@f,400000/esp@f,800000/sd@3,0:a ...
obio0 at root
obio0 at obio0: obio 0x100000 sparc ipl 12
zs0 is /obio/zs@0,100000
obio1 at obio0: obio 0x0 sparc ipl 12
zs1 is /obio/zs@0,0
cpu 0 initialization complete - online
ledma0 at sbus0: SBus slot f 0x400010
le0 at ledma0: SBus slot f 0xc00000 sparc ipl 6
le0 is /iommu@f,e0000000/sbus@f,e0001000/ledma@f,400010/le@f,c00000
dump on /dev/dsk/c0t3d0s1 size 200 MB
#

The following dmesg output is displayed from an x86 system.

# dmesg
SunOS Release 5.7 Version generic [UNIX(R) System V Release 4.0]
Copyright (c) 1983-1998, Sun Microsystems, Inc.
mem = 130684K (0x7f9f000)
avail mem = 114970624
root nexus = i86pc
isa0 at root
ISA-device: asy0
asy0 is /isa/asy@1,3f8
ISA-device: asy1
asy1 is /isa/asy@1,2f8
pci0 at root: space 0 offset 0
	IDE device at targ 0, lun 0 lastlun 0x0
	model WDC AC31000H, stat 50, err 0
		cfg 0x427a, cyl 2100, hd 16, sec/trk 63
		mult1 0x8010, mult2 0x108, dwcap 0x0, cap 0xf00
		piomode 0x180, dmamode 0x200, advpiomode 0x1
		minpio 380, minpioflow 180
		valid 0x3, dwdma 0x3, majver 0x0
ata_set_feature: (0x66,0x0) failed
ISA-device: ata0
Disk0:	cmdk0 at ata0 target 0 lun 0
cmdk0 is /isa/ata@1,1f0/cmdk@0,0
root on /isa/ata@1,1f0/cmdk@0,0:a fstype ufs
Number of console virtual screens = 13
cpu 0 initialization complete - online
Ethernet address = 2:7:1:1c:27:e5
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