What should you always do after erasing the configuration on flash?

After erasing the configuration on flash, it is essential to run the execute format disk command. This command is used to prepare the system to become operational again by formatting the storage. When the configuration is erased, the flash memory may not be in a clean and usable state, hence formatting it ensures that all remnants of the previous data are completely removed. This step is vital for establishing a fresh baseline on the device, allowing for new configurations to be accurately deployed without potential conflicts or leftover data from previous settings. Therefore, executing the format disk command is a crucial step in the process of resetting the device to ensure it functions optimally with a clean slate.