Epson 7500 - Manual (Page 42)

If you select
C
,
A,
the computer loads the operating system
from drive C. If it doesn’t find the operating system on drive C,
it checks the diskette in drive A. This setting allows the
computer to load the operating system a little faster.
Setting the Virus Warning
Your computer contains a built-in virus warning function to
protect your data should a software virus come in contact with
your system.
If the Virus Warning option is enabled, the system displays a
virus warning message when it detects a program attempting
to write to the boot sector on either a diskette or the hard disk
drive. You must respond to a prompt either to allow a
legitimate program (such as the MS-DOS FORMAT command)
to write to the boot sector or to deny access to a program that
shouldn’t be writing to the boot sector.
If you install an operating system, it writes to the boot sector as
you install it. In this case, you probably do not want the virus
warning feature enabled. Therefore, your system initially has the
virus warning feature disabled. This way you won’t need to
respond to the virus warning prompts if you install an
operating system. Once you have installed it, you can enable
this option to take advantage of the virus warning feature.
2 - 1 6 Running the SETUP Program