Specifications

Adding or Removing a SCSI device
When you add or remove a SCSI device, you must run the mkdev
command for that device. For example, run mkdev tape if you are
adding a tape drive.
Be prepared to supply the mkdev utility with the following
information:
❏ Host adapter prefix
❏ Host adapter number
❏ Target ID of the host adapter
❏ Logical Unit Number (LUN) of the device.
The host adapter prefix identifies the mode of the SCSI adapter to
which you are attaching a device. The following table lists the host
adapter prefixes:
Prefix
SCSI mode
ad Standard mode
eiad
I
Enhanced mode
I
See the SCO UNIX mkdev manual for more information.
You must reconfigure the kernel whenever you add or remove a
SCSI device. This updates the SCSI configuration file with the
location of the new device. You must rebuild the kernel and
reboot the system to access the new device.
Using the mkdev hd Utility
The UNIX SCSI Manager provides a new parameter, eiad, to the
mkdev hd utility. If you are in Enhanced mode, use the eiad
parameter when adding more hard disk drives to your SCSI
interface. The format for the mkdev hd utility is:
mkdev hd [O-7 scsi-0 ¦ scsi-1 [O-7] [eiad]]
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Installing Software Drivers for UNIX