Bios boot sequence extension

[Robert59]

What does the boot sequence extension means in bios. I was just fiddling around to add up an extra hard drive in the bios. The hard disk drive sometimes disappears but moving the cable will make the drive come up. Now I have found ext settings in the bios. What does that means. And the other thing I want to know does enabling virus warnking in the bios can block my disc.

[Devasis]

This role or occupation is only valid if the Boot Sequence utility above has EXT settings and this utility has to assist with the Boot Sequence utility. This utility permits you to set whether the system boots from an IDE hard disk that's attached to any of the extra two IDE ports found on some motherboards (i.e. ABIT BE6 and BP6) or a SCSI hard disk.

[Solomon]

To boot from an IDE hard disk should be attached to the 3rd or 4th IDE port, consideration of the extra on board IDE controller), you will first have to set the Boot Sequence (above) utility to start with EXT first. For example, the EXT, C, A setting. Then, you will have to set this utility, Boot Sequence EXT Means to IDE. In order to boot from a SCSI hard disk, set the Boot Sequence (above) utility to start with EXT first. For example, the EXT, C, A setting. Then, you will have to set this utility, Boot Sequence EXT Means to SCSI.

[MrChris-]

When Virus caution is facilitated, the BIOS will flash a caution message whenever there's an attempt to right of entry the boot sector or the partition table. You should leave this characteristic facilitated if probable. Note that this only prevents the boot sector and the partition table, not the total hard disk. However, this characteristic will cause troubles with the installation of certain software.

[Calvin K]

One best and better example is the installation routine of Win95/98. When facilitated, this characteristic will cause Win95/98's installation routine to fail. Put out of action it before installing such software. Also, many disk diagnostic utilities that right of entry the boot sector can trigger the inaccuracy message as well. You should first put out of action this option before using such utilities. Finally, this characteristic is useless for hard disks that run on external controllers with their own BIOS.

[Lillebror]

Boot sector viruses will go around the system BIOS and write unswervingly to such hard disks. Such controllers contains SCSI controllers and UltraDMA 66 controllers. Some motherboards will have their own rule-based anti-virus code (ChipAway) integrated into the BIOS. Facilitating it will present additional anti-virus prevention for the system as it will be able to remove boot viruses before they have a opportunity to infect the boot sector of the hard disk. Again, this is ineffective if the hard disk is on a separate controller with its own BIOS.