erase startup-config
wr or copy running-config startup config
On NVRAM.
show startup-config
To show the contents of NVRAM on a Cisco switch, you can use the command show startup-config. This command displays the startup configuration file stored in NVRAM, which contains the settings and configurations that the switch will use when it boots up.
On NVRAM.
NVRAM
NVRAM
The IOS command to copy the running configuration to NVRAM is copy running-config startup-config. This command saves the current configuration in RAM (running config) to the non-volatile memory (NVRAM), ensuring that the configuration is preserved after a reboot. You can also use the shorthand version, wr or write memory, to achieve the same result.
Data stored in nvram is erased
The router command used to copy the running configuration to NVRAM is copy running-config startup-config. This command saves the current active configuration so that it will be retained after a reboot. You can also use the shorthand version wr (short for "write memory") to achieve the same result.
NVRAM is that router component in which start up configuration file is stored.
NVRAM Stores startup-config. The IOS (Internetwork Operating System) is stored in the flash. Both flash and NVRAM are non volatile storages but there is a major difference.