3. CONFIGURING YOUR SCSI CARD
DC-395 Series User’s Manual
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the Greater Than 1GB Support feature only needs to be enabled if FAT is to be used as the
file system. *NTFS and HPFS do not impose a 1024 cylinder limit.
•
NetWare and UNIX are two Operating Systems that do not have a 1024 cylinder barrier
and therefore do not require that Greater Than 1GB Support be enabled.
•
If your HDD was formatted without Greater Than 1GB Support enabled originally, you
will have to backup the data and re-FDISK the drive in order to use the maximum
capacity under DOS or any Operating System using FAT.
•
Enabling the
Greater than 1G support
option will reassign the parameters to 512Bytes
per Sector, 63Sectors and 255Heads for SCSI disk drives with a capacity larger than 1
GByte. This allows the operation of hard drives with a capacity up to 8GByte with
operating systems such as DOS, Windows 95, etc.
•
For drives smaller than 1GByte, the 64Head/32Sector translation scheme will always be
employed, regardless of this option being enabled or not.
More Than 2 Drives Support:
Enabled/Disabled. When enabled, this option provides
support of up to eight devices (controlled by BIOS INT 13H), such as IDE/ESDI/ST506/
SCSI fixed disks, removable cartridges, and re-writable optical disks (MO) without the need
for device drivers under DOS 5.0 or above. This setting may be disabled under other
operating systems than DOS. Under DOS environments, the devices connected to the DC-
395 can be controlled through BIOS INT 13H or device drivers. When the option “Included
in BIOS Scan” is set to Yes, that device is controlled by BIOS INT 13H. If this option is set
to No, that device must be controlled through device drivers. The two options for More Than
2 Drive Support are as follows:
•
Enabled
(default)
Under DOS 5.0 or above, the ability to control up to eight devices, controlled by BIOS INT
13H is provided. Devices controlled could be IDE/ESDI/ST506/SCSI fixed disks, removable
cartridges, and re-writable optical disks (MO).
•
Disabled
When this option is disabled, only the number of drives in your mainboard CMOS setup is
supported without drivers. All other devices such as fixed disks (over two), removable
cartridges, re-writable optical disks (MO), tape streamers, DATs, and CD-ROMs, would
require device drivers. When devices are under the control of BIOS INT 13H, IDE drives
always have higher priorities over SCSI drives. The following is an example describing all
the combinations:
Device
Case 0
Case 1
Case 2
IDE HDD 0
none
Drive C:
Drive C:
