The Install mode uses a package-provisioning file named packages.conf in order to boot a switch. In addition, there are a number of .pkg files in the flash drive. We recommend that you do not alter the packages.conf and .pkg files unless directed by a Cisco Technical Assistance Center (TAC) engineer.
The Bundle mode uses monolithic Cisco IOS images to boot a switch. The Bundle mode consumes more memory than the Install mode because the packages are extracted from the bundle and copied to RAM