Motherboard Installation
Page 49
ANTI-VIRUS
When the Anti-Virus is enabled from the Security section of the WinBIOS
Setup menu, WinBIOS issues a warning when any program (or virus) issues a
Disk Format command or attempts to write to the boot sector of the hard disk
drive.
The settings are Enabled or Disabled. If Enabled is selected, the following
appears when a write is attempted to the boot sector. You may have to type N
several times to prevent the boot sector write.
Boot Sector Write!!!
Possible VIRUS: Continue (Y/N)? _
The following is displayed after any attempt to format any cylinder, head, or
sector of any hard disk drive via the BIOS INT 13h Hard Disk Drive Service:
Format!!!
Possible VIRUS: Continue (Y/N)? _
Formatting the Hard Disk Drive
You should not enable anti-virus protection when formatting a hard disk drive.
The DOS hard disk Format utility does not use INT 13h function AH = 05h to
format the hard disk. It only verifies the hard disk using the INT 13h Verify
function (AH = 04h). The virus warning message is not displayed during DOS
hard disk drive formatting.
If the anti-virus feature is enabled, a virus warning message will be displayed
when you attempt to format the hard disk drive.
If you select Continue, formatting proceeds as normal.
If you do not want to continue formatting, you may have to press N several
times (depending on how many retries are performed by the upper-level
software). DOS, for example, does at least five retries before the Format utility
is actually aborted.
