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ASA5506 USB boot in Rommon

Pedro Mietto
Level 1
Level 1

Hello,

 

Is there a way, in Rommon mode to download the ASA image from a USB flash drive and boot?

 

I know it is possible to do that via TFTP by setting up the environment variables and using the tftpdnld command, but I could not find the commands to do it via USB flash drive, without using TFTP server and the GE Mgmt interface.

 

The main problem is that I have a firewall unit with a corrupted image, so it won't boot past Rommon (it says "Signature verification failed for key #1"). I would like to rewrite the ASA file via USB, and not TFTP/GE Mgmt interface.

 

The Rommon version is 1.1.18.

 

Best regards.

 

1 Accepted Solution

Accepted Solutions

Connect USB : (make sure FAT formated) - 4GB or 8GB USB stick should be good.

 

ROMMON> dir

 

You will see the USB disk1 depends on where you connected.

 

ROMMON> dir disk1:  ( you will see ASA image)

 

ROMMON> boot disk1:asaimage.bin  or  

 

ROMMON>copy disk1:asaimage.bin disk0:  ( change boot variable to boot)

 

Once it booted you can copy from USB to Flash and set boot variable to boot from Flash.

 

 

BB

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3 Replies 3

balaji.bandi
Hall of Fame
Hall of Fame

Hi,

 

I followed the thread you suggested but I did not find information about loading an image in Rommon from a USB flash drive.

 

All I could find was the procedure for loading an image from a TFTP server.

 

Could you point me to where the information is exactly?

 

Best regards.

Connect USB : (make sure FAT formated) - 4GB or 8GB USB stick should be good.

 

ROMMON> dir

 

You will see the USB disk1 depends on where you connected.

 

ROMMON> dir disk1:  ( you will see ASA image)

 

ROMMON> boot disk1:asaimage.bin  or  

 

ROMMON>copy disk1:asaimage.bin disk0:  ( change boot variable to boot)

 

Once it booted you can copy from USB to Flash and set boot variable to boot from Flash.

 

 

BB

***** Rate All Helpful Responses *****

How to Ask The Cisco Community for Help

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