grub command line interface showed during the restore

Hi Experts,

NBU master: 7.6.1.2  RHEL65

NBU client: 7.6.1.2    RHEL66

srtiso  RHEL66

I am restoring my RHEL server using media boot.

The server is in grub command line mode now. The possible commands are listed after I entered 'tab'.

Does anyone know what should I do? Thanks!

Regards,

Lacey