System Boot | 474 show bootvar This command displays the current operating system boot configuration parameters.5 boot change {primary |secondary | default}If your configuration displays no preconfigured operating system boot parameters,use the boot change command to edit appropriate fields.• The primary operating system boot parameters are used in the first attempt to bootthe system.• The secondary operating system boot parameters are used if the primary operatingsystem boot selection is not available.• The default operating system boot parameters are used if the secondary operatingsystem boot parameter selection is not available. The default parameters alwaysreside on the internal flash device (flash:).NOTE: These parameters, as well as other boot parameters, can be modifiedin the CLI mode.When you enter the boot change command, you are prompted for a response.• Enter a new parameter or press the ENTER key (carriage return) to accept thedefault parameter.• Enter . (period) to clear a field.• Enter - (dash) to edit a field above the current cursor position.NOTE: When you enter a new parameter that extends beyond 80 characters,you cannot use the BACKSPACE key to correct any mistakes. If you make a mistake,you must re-enter the parameter.BOOT_USER # show bootvarPRIMARY OPERATING SYSTEM BOOT PARAMETERS:========================================boot device : flashfile name : /E600i-x.binSECONDARY OPERATING SYSTEM BOOT PARAMETERS:BOOT_USER # boot change primary'.' = clear field; '-' = go to previous fieldboot device : flashfile name : /E600i-6.x.binBOOT_USER # boot change default'.' = clear field; '-' = go to previous fieldboot device : flashfile name : /E600i-6.x.binBOOT_USER #