Boot the system into single-user mode

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1. Connect a terminal to the BIG-IP serial console port.
2. Reboot BIG-IP.

   After booting, BIG-IP will display the GRUB menu and will countdown before continuing the boot process.

3. Before the countdown expires, press the ^ and v keys (SHIFT, 6, v) to select the boot image.

   Note: Unless you have installed multiple boot images, there will only be one.

4. Press the e key to edit the boot options.

   A new menu screen displays.

5. Press the ^ and v keys (SHIFT, 6, v) to select the line that begins with kernel /boot/vmlinuz.
6. Press the e key.
7. Add the word single to the end of the line.
8. Press the Enter key.
9. Press the b key to boot the system using the modified options.

You have now booted the system in single-user mode.

When you are finished using single-user mode, type exit or reboot to return to the normal operating mode.