Default Boot List And Service Mode Boot List - IBM RS/6000 44P 270 Service Manual

3. Wait 30 seconds, and turn on the system.
4. When or after the keyboard indicator appears during startup, press the F6 key on a
directly attached keyboard (or the number 6 key on an ASCII terminal).
5. Enter any requested passwords.
After any requested passwords have been entered, the system attempts to boot from
the first device of each type found on the list. If no bootable image is found on the first
device of each type on the list, the system does not search through the other devices of
that type for a bootable image. Instead, it polls the first device of the next type.
If all types of devices in the boot list have been polled without finding a bootable image,
the system restarts, giving 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.

Default Boot List and Service Mode Boot List

The default boot list is as follows:
1. Diskette drive
2. CD-ROM drive
3. Tape drive
4. Disk drive
5. Network adapter
v Token-ring
v Ethernet
Pressing the F5 key on a directly attached keyboard (or the number 5 key on an ASCII
terminal) causes the system to load standalone diagnostics provided that a diagnostic
CD is present in the CD-ROM drive.
Pressing the F6 key on a directly attached keyboard (or number 6 key on an ASCII
terminal) loads online diagnostics using the service mode boot list. No diagnostic CD
should be in the CD-ROM drive because online diagnostics is typically run from a hard
disk, which is in the service mode boot list defined by using the system diagnostics
"Display or Change Bootlist" service aid. Like the default boot list, the service mode
boot list can contain five entries. The F6 and 6 keys work like the F5 and 5 keys, with
the following exceptions:
v The system searches for a boot record according to the service mode boot list.
v If the service mode boot list is discovered by a cyclical redundancy check to be
corrupted, the system rebuilds the service mode boot list according to the default
boot list. (The default boot list contains five entries, and for each matching device
type found in the system unit, the system makes an entry in the service mode boot
list.)
v If no service mode boot list is present, the system uses the default boot list.
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Service Guide