OpenBoot Nonvolatile RAM (NVRAM)
System configuration variables are stored in the system NVRAM. These OpenBoot variables determine the startup machine configuration and related communication characteristics. You can modify the values of the configuration variables, and any changes you make remain in effect even after a power cycle. Configuration variables should be adjusted cautiously, however.
Table 10.7 describes OpenBoot’s NVRAM configuration variables, their default values, and their functions.
| Variable | Default | Description |
|---|---|---|
| auto-boot? | true | If true, start up automatically after power-on or reset. |
| boot-command | boot | Command that is executed if auto-boot? is true. |
| boot-device | disk or net | Device from which to start ... |
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