++When you press ctr+C while sup is performing BIOS test,POST and OS application test we will end up in loader prompt.
++ When there is bootflash corruption, supervisor cannot load the kickstart image it end up in loader prompt.
++ Also when Nx-OS image is corrupted it will end up in Loader prompt.
from boot loader if you if you want to bring up the sup,By assigning local IP address and subnet mask in loader prompt you can start the nx-os loader>
Example:192.168.1.10 is IP address of TFTP server.
loader> set ip 192.168.1.2 255.255.255.0 // this will set the local ip add and subnet mask
loader> set gw 192.168.1.1 // this will specify the ip address of the default gate way.
after this above step,Boot the kickstart image file from the required server
loader> boot tftp//192.168.1.10//tftpboot/<n7000-kickstart-image.bin>
The boot loader uncompresses the loaded software to boot an image using its filename as a reference. The image is made available through bootflash.
++ than it will enter to switch(boot)# prompt
switch(boot)#
Regards,
Naveen