IBM RS/6000 7024 E Series, Руководство по обслуживанию, Страница: 84 / 162

If all types of devices in the boot list have been polled without finding a bootable
image, the system will will restart, this gives the user the opportunity to start the
System Management Services ( by pressing the F1 key on a directly attached
keyboard or the number 1 on an ASCII terminal) before the system attempts to boot
again.
Custom Boot List and Default Boot List
The default boot list is:
1. Diskette
2. CD-ROM
3. Hard File
4. Network
Ÿ
Token-Ring
Ÿ
Ethernet
Pressing the F5 key on a directly-attached keyboard (or the number 5 key on an
ASCII terminal) causes the system to boot in service mode from this list.
Pressing the F6 key on a directly-attached keyboard (or number 6 key on an ASCII
terminal) selects a service mode boot from the custom boot list, which is the boot list
defined using the System Management Services described in Chapter 5, “System
Management Services” on page 5-1. Like the default boot list, the custom boot list
can contain four entries. The F6 or 6 keys work like the F5 or 5 keys, with the
following exceptions:
Ÿ
The system will search for a boot record according to the custom boot list.
Ÿ
If the custom boot list is discovered by a cyclical redundancy check to be
corrupted, the system will rebuild the custom boot list according to the default
boot list. (The default boot list contains four entries, and for each matching
device type found in the system unit, the system makes an entry in the custom
boot list.)
Ÿ
If no custom boot list is present, the system enters "none" in the corresponding
location within the custom boot list.
4-2
Service Guide