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Catalyst 3750-E and 3560-E Switch Software Configuration Guide
OL-9775-02
Chapter 3 Assigning the Switch IP Address and Default Gateway
Modifying the Startup Configuration
To disable manual booting, use the no boot manual global configuration command.
Booting a Specific Software Image
By default, the switch attempts to automatically boot up the system using information in the BOOT
environment variable. If this variable is not set, the switch attempts to load and execute the first
executable image it can by performing a recursive, depth-first search throughout the flash file system.
In a depth-first search of a directory, each encountered subdirectory is completely searched before
continuing the search in the original directory. However, you can specify a specific image to boot up.
Beginning in privileged EXEC mode, follow these steps to configure the switch to boot up a specific
image during the next boot cycle:
Step 4
show boot Verify your entries.
The boot manual global command changes the setting of the
MANUAL_BOOT environment variable.
The next time you reboot the system, the switch is in boot loader
mode, shown by the switch: prompt. To boot up the system, use the
boot filesystem:/file-url boot loader command.
• For filesystem:, use flash: for the system board flash device.
• For file-url, specify the path (directory) and the name of the
bootable image.
Filenames and directory names are case sensitive.
Step 5
copy running-config startup-config (Optional) Save your entries in the configuration file.
Command Purpose
Command Purpose
Step 1
configure terminal Enter global configuration mode.
Step 2
boot system filesystem:/file-url Configure the switch to boot up a specific image in flash memory during
the next boot cycle.
• For filesystem:, use flash: for the system board flash device.
• For file-url, specify the path (directory) and the name of the bootable
image.
If you enter this command on a Catalyst 3750-E stack master, the specified
software image is loaded only on the stack master during the next boot
cycle.
Filenames and directory names are case sensitive.