When to Boot a System
The following table lists system administration tasks and the corresponding boot option that is used to complete the task.
Table 8–2 Booting a System|
Reason for System Reboot |
Appropriate Boot Option |
Information for SPARC Based Systems |
Information for x86 Based Systems |
|---|---|---|---|
|
Turn off system power due to anticipated power outage. |
Turn system power back on. | ||
|
Change kernel parameters in the /etc/system file. |
Reboot the system to run level 3 (multiuser level with NFS resources shared). |
SPARC: How to Boot a System to Run Level 3 (Multiuser Level) | |
|
Perform file system maintenance, such as backing up or restoring system data. |
Press Control-D from run level S to bring the system back to run level 3. |
SPARC: How to Boot a System to Run Level S (Single-User Level) |
x86: How to Boot a System to Run Level S (Single-User Level) |
|
Repair a system configuration file such as /etc/system. |
Interactive boot. | ||
|
Add or remove hardware from the system. |
Reconfiguration boot (also to turn on system power after adding or removing hardware). | ||
|
Boot the system by using the kernel debugger (kmdb) to track down a system problem. |
Booting with the kmdb option. |
SPARC: How to Boot the System With the Kernel Debugger (kmdb) |
x86: How to Boot a System With the Kernel Debugger in the GRUB Boot Environment (kmdb) |
|
Boot the system in failsafe mode to repair an important system file that is causing system boot failure. |
Booting the failsafe archive. | ||
|
To recover from a hung system and force a crash dump. |
Performing a recovery boot |
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