Switch fails to fully initialize and reboots with no error message OR the switch may to fail to initialize and display the error "mmc_set_blocklen: Error setting block length to 512"
Image is corrupted
Recover the switch with the alternate image:
Reboot the switch by unplugging the power and plugging it back in
Press and hold the <spacebar> button while the switch is booting up to enter the Bootrom menu
Select the image that is currently not used by typing the command "boot 1" or "boot 2"
Verify that you are able to boot to the alternate image
Reinstall or upgrade the EXOS image on the partition that the image is corrupted on
If the above steps prove unsuccessful, see the following articles below and choose one depending on the platform for the steps for installing a recovery image from Bootrom. Please note that this will erase all data on the switch: