14
SCSI Card 2940U2W User’s Reference
Using SCSI and IDE (or EIDE) Peripherals
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All Adaptec SCSI cards can coexist with another controller
(IDE, EIDE, RLL, etc.) installed in the computer.
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If you have both an IDE hard disk drive and a SCSI hard disk
drive, the IDE drive is typically the boot drive. In this case, dis-
able the BIOS on the SCSI card (see Advanced Configuration
Options on page 20). If your computer supports BBS (BIOS Boot
Specification), both SCSI and non-SCSI disk drives can coexist
and you can specify which drive to boot from. Refer to your
computer documentation for more information.
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You cannot connect an IDE peripheral to a SCSI card, or a SCSI
peripheral to an IDE card (controller).
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Disable the BIOS on the SCSI card if no SCSI hard disk drives
are installed (see Advanced Configuration Options on page 20).
Replacing a Non-Adaptec SCSI Card with an
Adaptec SCSI Card
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SCSI is standard, but how data is translated on to a hard disk
drive is not. Each SCSI card manufacturer uses its own transla-
tion schemes for writing data to a disk. To use a hard disk
drive previously connected to a non-Adaptec SCSI card, low-
level format the drive after connecting to the Adaptec SCSI
card. (See Using SCSI Disk Utilities on page 22.)
Caution:
A low-level format destroys all data on the drive.
Be sure to back up your data before performing a low-level
format.
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