Note -
There are duplications between the soft and hard overrides. If possible, the
hard override commands
asr-enable
and
asr-disable
should be used.
To keep track of the status of all manual overrides, a new user command,
.asr
, is
provided to summarize the current settings.
ok asr-disable cpu1 bank3
ok .asr
CPU0: Enabled
CPU1: Disabled
CPU2: Enabled
CPU3: Enabled
SC-Marvin: Enabled
Psycho@1f: Enabled
Psycho@4: Enabled
Psycho@6: Enabled
Cheerio: Enabled
SCSI: Enabled
Mem Bank0: Enabled
Mem Bank1: Enabled
Mem Bank2: Enabled
Mem Bank3: Disabled
PROM: Enabled
NVRAM: Enabled
TTY: Enabled
Audio: Enabled
SuperIO: Enabled
PCI Slots: Enabled
Auto-Boot Options
OpenBoot provides for an NVRAM controlled switch called
auto-boot?
, which
controls whether OBP will automatically boot the operating system after each reset.
The default for Sun platforms is
true
.
If a system fails power-on diagnostics, then
auto-boot?
is ignored and the system
does not boot unless the user does it manually. This behavior is obviously not
acceptable for a degraded boot scenario, so the Ultra 450 OBP provides a second
NVRAM-controlled switch called
auto-boot-on-error?
. This switch controls
whether the system will attempt a degraded boot when a subsystem failure is
detected. Both the
auto-boot?
and
auto-boot-on-error?
switches must be set
to
true
to enable a degraded boot.
ok setenv auto-boot-on-error? true
12
♦
September 1998, Revision A
Summary of Contents for Sun Ultra 450
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