System Startup, Configuration, and Shutdown Reference Manual (32650-90907)

Chapter 2
Initiating System Activity
The Booting Process
30
MMSAVE Version 2.2
DUMPAREA found, save main memory to disc
ISL loaded
ISL Revision A.00.28 July 15, 1993
ISL booting START AUTO
,
.
,
In Example 2-5, autoboot must be turned on, and an autoboot file (also known as an autoexecute file) must
reside in the logical interchange format (LIF) directory for ISL to autoboot. If not, you get the message Cannot
find an autoexecute file. AUTOBOOT ABORTED. For information on turning on autoboot, refer to
Chapter 3, “System Startup Functions.” For information on replacing autoboot files using SYSGEN, refer to
Chapter 8, “Modifying System File Configurations.”
Interrupting an Autobooting System
Even with the autoboot sequence in effect, you can override it to select an alternate boot medium (for
example, a tape drive or another disk drive), to activate a different ISL utility, or to enter a different set of
options. This is accomplished by pressing any key within 10 seconds after receiving the message that autoboot
has been enabled.
Example 2-4 provides a partial listing of an interrupted autoboot sequences for an N-Class system. Other
systems may display different messages and boot paths.
Example 2-4 Interrupting Autobooting an N-Class System.
TC
Execution of this command irrecoverably halts all system processing and
I/O activity and restarts the computer system.
Type Y to confirm your intention to restart the system: (Y/[N]) y
y
-> SPU hardware was successfully reset.
. . . .
Processor Speed State CoProcessor State Cache Size
Number State Inst Data
--------- -------- --------------------- ----------------- ------------
1 540 MHz Active Functional 512 KB 1 MB
3 Unknown Stopped:Deconfigured Unknown 512 KB 1 MB
Central Bus Speed (in MHz) : 133
Available Memory : 2097152 KB
Good Memory Required : Not initialized. Defaults to 32 MB.