Step 5 Press Esc during the bootup when prompted to reach the ROMMON prompt.
Pay close attention to the monitor.
Example:
[...]
Booting from ROMMON
Cisco Systems ROMMON Version (2.1(9)8) #1: Wed Oct 26 17:14:40 PDT 2011
Platform ASA 5555-X with SW, 8 GE Data, 1 GE Mgmt
Use BREAK or ESC to interrupt boot.
Use SPACE to begin boot immediately.
Boot in 7 seconds.
Press Esc at this point.
If you see the following message, then you waited too long, and must reboot the FTD again after it finishes
booting:
Launching BootLoader...
Boot configuration file contains 2 entries.
[...]
Step 6 Erase all disk(s) on the FTD. The internal flash is called disk0. If you have an external USB drive, it is disk1.
Example:
Example:
rommon #0> erase disk0:
About to erase the selected device, this will erase
all files including configuration, and images.
Continue with erase? y/n [n]: y
Erasing Disk0:
.......................
[...]
This step erases FTD files so that the ASA does not try to load an incorrect configuration file, which causes
numerous errors.
Step 7 Set the network settings, and load the ASA image using the following ROMMON commands.
interface interface_id
address management_ip_address
netmask subnet_mask
server tftp_ip_address
gateway gateway_ip_address
filepath/filename
set
Cisco ASA and Firepower Threat Defense Reimage Guide
14
Cisco ASA and Firepower Threat Defense Reimage Guide
Reimage from Firepower Threat Defense to ASA
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