TAG 20 - Manual (Page 96)

5-12 Setup Configuration Utility (SCU)
Hard Disk Boot Sector
Helps prevent infection of computer viruses by protecting the hard disk
boot sector (partition table) from changes. A check mark (
√) indicates
enabled, while underline (_) indicates disabled.
CAUTION: Disable this item before installing an operating system, running Fdisk or
Format
program. Otherwise, the intended action will fail.