Metro boot loader4/7/2023 ![]() The break key character is different for each operating system. The boot loader prompts the user for a break key character during the boot-up sequence, as shown in this example: ***** The system will autoboot in 15 seconds ***** After the switch performs POST, the switch begins the autoboot process. Disconnect and then reconnect the switch power cord. You can access the boot loader through a switch console connection at 9600 bps. For more information, see the software configuration guide for this release. With password recovery disabled, the user can still interrupt the boot process and change the password, but the configuration file (config.text) and the VLAN database file (vlan.dat) are deleted. The password recovery disable feature allows the system administrator to protect access to the switch password by disabling part of this functionality and allowing the user to interrupt the boot process only by agreeing to set the system back to the default configuration. Note The default switch configuration allows an end user with physical access to the switch to recover from a lost password by interrupting the boot process while the switch is powering up and then entering a new password. You can also access the boot loader if you have lost or forgotten the switch password. You gain access to the boot loader command line if the switch is set to manually boot, if an error occurs during power-on self-test (POST) DRAM testing, or if an error occurs while loading the operating system (a corrupted Cisco IOS image). During normal boot loader operation, you are not presented with the boot loader command-line prompt. This appendix describes the boot loader commands on the Cisco ME 3400 Ethernet Access switch.
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