Factory default Cisco Device

CiscoSwitch#write erase
Erasing the nvram filesystem will remove all configuration files! Continue? [confirm]
[OK]
Erase of nvram: complete
CiscoSwitch#del flash:/vlan.dat
Delete filename [vlan.dat]?
Delete flash:/vlan.dat? [confirm]
CiscoSwitch#reload


Would you like to enter the initial configuration dialog? [yes/no]:no

switch#wr