DFI G586SP Benutzerhandbuch

When using two IDE drives, one must be set as the master
and the other as the slave. Follow the instructions provided
by the drive manufacturer for setting the jumpers, drive type,
and/or switches on the drives. No changes are needed on the
system board when adding a second hard drive.

It is recommended that the IDE hard drives be from the same
manufacturer. In a few cases, drives from two different
manufacturers will not function properly when used together.
The problem lies in the hard drives, not the system board.

IDE disk drives are already low-level formatted, with any
bad-track errors entered, when shipped by the drive manufac-
turer. Do not attempt to do a low-level format or you may
cause serious damage to the drive.  To use an IDE drive, you
need to enter the drive type into the system’s CMOS setup
table. Then run FDISK and FORMAT provided with DOS.

Warning:
Do not run FDISK and FORMAT programs on a drive that
has already been formatted or you will lose all programs
and data stored on the drive.