A LLB occurs when part of the boot process is corrupt (i.e. boot2) and it's unable to load an IOS (i.e. IOS70). Since boot2 is required to be working and able load an IOS before the system can run, any errors in this process will render the system inoperable. A LLB cannot be fixed with software and requires hardware modification to be repaired. | A LLB occurs when part of the boot process is corrupt (i.e. boot2) and it's unable to load an IOS (i.e. IOS70). Since boot2 is required to be working and able load an IOS before the system can run, any errors in this process will render the system inoperable. A LLB cannot be fixed with software and requires hardware modification to be repaired. |