Sun Microsystems Sun Fire V440 Diagnostics And Troubleshooting Manual page 39

Other OpenBoot Commands
Beyond the formal firmware-based diagnostic tools, there are a few commands you
can invoke from the ok prompt. These OpenBoot commands display information
that can help you assess the condition of a Sun Fire V440 server. These include the
following:
printenv command
probe-scsi and probe-scsi-all commands
probe-ide command
show-devs command
The following sections describe the information these commands give you. For
instructions on using these commands, turn to "How to Use OpenBoot Information
Commands" on page 94, or look up the appropriate man page.
printenv Command
The printenv command displays the OpenBoot configuration variables. The
display includes the current values for these variables as well as the default values.
For details, see "How to View and Set OpenBoot Configuration Variables" on
page 54.
For a list of some important OpenBoot configuration variables, see
probe-scsi and probe-scsi-all Commands
The probe-scsi and probe-scsi-all commands diagnose problems with
attached and internal SCSI devices.
Caution – If you used the halt command or the L1-A (Stop-A) key sequence to
reach the ok prompt, then issuing the probe-scsi or probe-scsi-all command
can hang the system.
The probe-scsi command communicates with all SCSI devices connected to on-
board SCSI controllers. The probe-scsi-all command additionally accesses
devices connected to any host adapters installed in PCI slots.
For any SCSI device that is connected and active, the probe-scsi and probe-
scsi-all commands display its target and unit numbers, and a device description
that includes type and manufacturer.
Chapter 2 Diagnostics and the Boot Process
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TABLE 2-1
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