Chapter 3
BIOS Configuration
Settings Chart (Continued)
Setting Option | BIOS Default | Setup Default |
| | |
D4000-D7FFF Shadow | Disabled | Disabled |
| | |
D8000-DBFFF Shadow | Disabled | Disabled |
| | |
DC000-DFFFF Shadow | Disabled | Disabled |
| | |
Cyrix 6x86 / MII CPU ID | Enabled | Enabled |
| | |
Virus Warning
When enabled, you receive a warning message if a program (specifically, a virus) attempts to write to the boot sector or the partition table of the hard disk drive. You should then run an anti-virus program. Keep in mind that this feature protects only the boot sector, not the entire hard drive. Note: Many disk diagnostic programs that access the boot sector table can trigger the virus warning message. If you plan to run such a program, we recommend that you first disable the virus warning.
CPU Internal Cache/External Cache
Cache memory is additional memory that is much faster than conventional DRAM (system memory). CPUs from 486-type on up contain internal cache memory, and most, but not all, modern PCs have additional (external) cache memory. When the CPU requests data, the system transfers the requested data from the main DRAM into cache memory, for even faster access by the CPU. The External Cache field may not appear if your system does not have external cache memory.
Quick Power On Self Test
Select Enabled to reduce the amount of time required to run the power-on self- test (POST). A quick POST skips certain steps. We recommend that you normally disable quick POST. Better to find a problem during POST than lose data during your work.
Boot Sequence
The original IBM PCs loaded the operating system from drive A (floppy disk), so IBM PC-compatible systems are designed to search for an operating system first on drive A, and then on drive C (hard disk). However, modern computers usually load the operating system from the hard drive, and may even load it from a CD-ROM drive. The BIOS now offers a large number of boot devices and boot sequence options.
Swap Floppy Drive
This field is effective only in systems with two floppy drives. Selecting
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