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Troubleshooting
182 Avaya CMS Sun Ultra 5 Computer Hardware Installation, Maintenance, and Troubleshooting
Recovery procedures
This section contains procedures to follow when certain conditions or errors occur.
Preserving data after a system failure
Enter the sync command at the ok prompt to force any information on its way to the hard
disk to be written out immediately. This is useful if the operating system fails or is
interrupted before preserving all data.
The sync command returns control to the operating system and performs the data-saving
operations. After the disk data is synchronized, the operating system begins to save a core
image of itself. If you do not need this core dump, you can interrupt the operation by
pressing Stop+A.
Loss of power
If the system loses power, it is recommended (but not required) that you empty the CD-
ROM or DVD-ROM and tape drives. The system boots from the disk by default.
Power-on sequence – To turn the power back on:
1. Turn on all external SCSI devices starting with the device that is farthest from the
system and working toward the system.
2. Turn on the system monitor.
3. Turn on the system.
If the system is operating properly, a banner screen is displayed up to 3 minutes after it
is powered on.
|------| <Product Name>, Keyboard Present
| | OpenBoot 3.xx, XXX MB memory installed, Serial #XXXXXXXXX
| | Copyright 2000 Sun Microsystems, Inc. All rights reserved.
|------| Ethernet address X:X:XX:XX:XX:XX, Host ID: XXXXXXXX