3-76
Cisco 12404 Internet Router Installation and Configuration Guide
OL-11636-01
Chapter 3 Installing the Cisco 12404 Internet Router
Booting from Flash Memory
During the squeeze operation, the system maintains a log identifying which of the
squeeze functions has been accomplished, so that the system can return to the
proper place and continue the operation in the event of a power failure.
Booting from Flash Memory
To enable booting from Flash memory, set the boot field in the software
configuration register (bits 3 through 0) to a value between 2 and 15. These values
are used with the
boot system flash
device:filename
configuration command,
where
device
is
bootflash:
,
slot0:
, or
slot1:
, and
filename
is the name of the file
from which you want to boot the system.
To enter global configuration mode (while the system is running) and specify a
Flash filename from which to boot the system, enter the
configure terminal
command at the privileged EXEC mode prompt on the system console, as follows:
Filo#
configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Filo(config)#
boot system flash
device
:
filename
Table 3-20
Squeeze Command Functions Example
Command
Example Function
e
The character
e
in the last line indicates that the special Flash
memory area has been erased. This erase operation must be
accomplished before any write operation so the special Flash
memory area can begin.
b
The character
b
indicates that the data about to be written to the
special Flash memory area has been temporarily copied.
E
The character
E
indicates that the sector temporarily occupied by
the data has been erased.
S
The character
S
indicates that the data has been written to its
permanent location in Flash memory.
Z
The character
Z
indicates that the log has been erased following
the successful
squeeze
operation.
todd.book Page 76 Tuesday, November 27, 2007 6:02 PM
