Your appliance is shipped from the factory with the boot mode set to Legacy Boot mode. If for some reason the BIOS reverts to factory default settings you should re-configure the BIOS back to Legacy Boot mode, otherwise the appliance will fail boot.To set the boot mode to Legacy follow these steps:
- From the System Utilities screen, select System Configuration -> BIOS/Platform Configuration (RBSU) -> Boot Options -> Boot Mode and press Enter
- Select Legacy BIOS Mode
- Press F10
- Reboot the Server
For more information on the boot mode options for the TAC Gateway Appliance Hardware use THIS LINK.