Where is the Cisco IOS stored?

The IOS is stored in a memory area called flash. The flash allows the IOS to be upgraded or stores multiple IOS files. In many router architectures, the IOS is copied into and run from RAM. A copy of the configuration file is stored in NVRAM to be used during startup.

What is the command to delete a folder?

To delete a folder use the “Rmdir” command, which stands for “Remove Directory”. Keep in mind that as the name suggests, “Rmdir” only deletes directories.