Cisco 2901 - Displaying Files in a File System (Dir); Loading a System Image (Boot)

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Cisco 3900 Series, Cisco 2900 Series, and Cisco 1900 Series Integrated Services Routers Generation 2 Software Configuration Guide
Appendix C Using ROM Monitor
How to Use the ROM Monitor—Typical Tasks
Examples
Sample Output for the help ROM Monitor Command
rommon 1 > help
alias set and display aliases command
boot boot up an external process
break set/show/clear the breakpoint
confreg configuration register utility
cont continue executing a downloaded image
context display the context of a loaded image
cookie display contents of cookie PROM in hex
dev list the device table
dir list files in file system
frame print out a selected stack frame
help monitor builtin command help
history monitor command history
iomemset set IO memory percent
meminfo main memory information
repeat repeat a monitor command
reset system reset
rommon-pref select ROMMON
set display the monitor variables
showmon display currently selected ROM monitor
stack produce a stack trace
sync write monitor environment to NVRAM
sysret print out info from last system return
tftpdnld tftp image download
unalias unset an alias
unset unset a monitor variable
xmodem x/ymodem image download
hwpart Read HW resources partition
Displaying Files in a File System (dir)
To display a list of the files and directories in the file system, use the dir command, as shown in the
following example:
rommon 1 > dir flash0:
program load complete, entry point: 0x80803000, size: 0x1b340
Directory of flash0:
2 60199000 -rw- c2900-universalk9-mz.SSA.rel1
14700 1267 -rw- configuration
rommon 2 > dir usbflash0:
program load complete, entry point: 0x80903000, size: 0x4c400
Directory of usbflash0:
2 54212244 -rw- c2900-universalk9-mz.SSA
Loading a System Image (boot)
This section describes how to load a system image by using the boot ROM monitor command.
Prerequisites
Determine the filename and location of the system image that you want to load.