You can access the GRUB command-line through the GRUB boot menu.
Note: If you are upgrading from an older version of Address Manager to v9.2.0, and if
you want to access the GRUB menu on both a serial connection and iDRAC, enter the
following command in the GRUB command-line:
GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0 console=tty0
console=ttyS0"
To access the GRUB command-line: