that was well explained, appreciate the quick reply. Got one more question what is the minimum free space need for upgrading? Im upgrading from 16.9.3a to 16.12.9 but i only have 400MB of free space.

Hi Leo, what is the difference between software install file flash-1:IOS_FILENAME.bin new force verb on-reboot" and software install file flash-1:IOS_FILENAME.bin switch 1-2

Having the same issue but i don't have output for lsof | grep deleted bpnfw04:~$ df -k /ngfwFilesystem 1K-blocks Used Available Use% Mounted on/dev/sda6 41943040 41660476 282564 100% /ngfwbpnfw04:~$ lsof | grep deletedbpnfw04:~$