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System Administration Guide: Basic Administration

SPARC: How to Identify Devices on a System

You might need to identify the devices on the system to figure out what are the appropriate devices to boot from.

Before you can safely use the probe commands to find out what devices are attached to the system, you need to do the following:

You can the probe commands that are available on your system by using the sifting probe command, as follows:


ok sifting probe

If you run the probe commands without clearing the system registers, the following message is displayed:


ok probe-scsi
This command may hang the system if a Stop-A or halt command
has been executed.  Please type reset-all to reset the system 
before executing this command. 
Do you wish to continue? (y/n) n

  1. Change the PROM auto-boot? parameter to false.


    ok setenv auto-boot? false

  2. Clear the system's registers.


    ok reset-all

  3. Identify the devices on the system.


    ok probe-device

  4. (Optional) If you want the system to reboot after a power failure or after using the reset command, then change the auto-boot? parameter back to true.


    ok setenv auto-boot? true
auto-boot? =          true

  5. Boot the system back to multiuser mode.


    ok reset

SPARC: Examples—Identifying the Devices on a System

The following example shows how to identify the devices connected to an Ultra10 system.


ok setenv auto-boot? false
auto-boot? =          false
ok reset-all
Resetting ... 

Sun Ultra 5/10 UPA/PCI (UltraSPARC-IIi 333MHz), No Keyboard
OpenBoot 3.15, 128 MB memory installed, Serial #10933339.
Ethernet address 8:0:20:a6:d4:5b, Host ID: 80a6d45b.

ok probe-ide
  Device 0  ( Primary Master ) 
          ATA Model: ST34321A                                

  Device 1  ( Primary Slave ) 
         Not Present

  Device 2  ( Secondary Master ) 
         Removable ATAPI Model: CRD-8322B                               

  Device 3  ( Secondary Slave ) 
         Not Present

ok setenv auto-boot? true
auto-boot? =          true

You can use the devalias command to identify the device aliases and the associated paths of devices that might be connected to the system.


ok devalias
screen                   /pci@1f,0/pci@1,1/SUNW,m64B@2
net                      /pci@1f,0/pci@1,1/network@1,1
cdrom                    /pci@1f,0/pci@1,1/ide@3/cdrom@2,0:f
disk                     /pci@1f,0/pci@1,1/ide@3/disk@0,0
disk3                    /pci@1f,0/pci@1,1/ide@3/disk@3,0
disk2                    /pci@1f,0/pci@1,1/ide@3/disk@2,0
disk1                    /pci@1f,0/pci@1,1/ide@3/disk@1,0
disk0                    /pci@1f,0/pci@1,1/ide@3/disk@0,0
ide                      /pci@1f,0/pci@1,1/ide@3
floppy                   /pci@1f,0/pci@1,1/ebus@1/fdthree
ttyb                     /pci@1f,0/pci@1,1/ebus@1/se:b
ttya                     /pci@1f,0/pci@1,1/ebus@1/se:a
keyboard!                /pci@1f,0/pci@1,1/ebus@1/su@14,3083f8:forcemode
keyboard                 /pci@1f,0/pci@1,1/ebus@1/su@14,3083f8
mouse                    /pci@1f,0/pci@1,1/ebus@1/su@14,3062f8
name                     aliases