Multiple IOS mages in BOOTVAR string ASA 5500 series

goodwinag — Tue, 12 Mar 2019 08:27:30 GMT

Hello,

We have an ASA that is our main firewall, when typing the show bootvar command, the following output appears:

BOOT variable = disk0:/asa961-smp-k8.bin;disk0:/asa931-1-smp-k8.bin;disk0:/asa931-1-smp-k8.bin;disk0:/asa921-smp-k8.bin
Current BOOT variable = disk0:/asa961-smp-k8.bin;disk0:/asa931-1-smp-k8.bin;disk0:/asa922-4-smp-k8.bin;disk0:/asa921-smp-k8.bin

We would like to have the first one in the string as the boot image, would removing the remaining images be as simple as follows?

no boot disk0:/asa931-1-smp-k8.bin

no boot disk0:/asa931-1-smp-k8.bin (duplicate)

no boot disk0:/asa921-smp-k8.bin

After doing so, would the above mentioned images be removed from the bootvar?

Thanks In Advance,

Tony

Hi,

Anton Abik — Fri, 28 Oct 2016 17:29:45 GMT

Hi,

just execute show run boot
copy the output of this command. You will see something like this "boot system disk0:/asaXXX-smp-k8.bin" multiple times for every image
put down "NO" before every image you dont want, like this "no boot system disk0:/asaXXX-smp-k8.bin"
Leave just the one you want
copy run start

Hope it helps

topic Multiple IOS mages in BOOTVAR string ASA 5500 series in Network Security

Multiple IOS mages in BOOTVAR string ASA 5500 series

Hi,