F
LASH
/F
ILE
 C
OMMANDS
3-25
boot system
Use this command to specify the file or image used to start up the system.
Syntax 
boot system {boot-rom| config | opcode}: filename
The type of file or image to set as a default includes:
• boot-rom - Boot ROM 
• config - Configuration file 
• opcode - Run-time operation code 
The colon (:) is required.
filename - Name of the configuration file or image name.
Default Setting 
None
Command Mode 
Global Configuration
Command Usage 
• A colon (:) is required after the specified file type. 
• If the file contains an error, it cannot be set as the default file. 
Example
Related Commands
dir (3-23)
whichboot (3-24)
Console(config)#boot system config: startup
Console(config)#