User`s manual

157
Chapter G - Using SCO UNIX V/386
First, install the GDT driver on the SCO UNIX system. To do so the system does not need to
have a GDT controller installed yet. Install the driver with the help of the program custom.
Log into the already running SCO UNIX system as root and start custom. Now, select the op-
tion Install, then A new Product, and finally Entire Product from the menu coming up. When
requested, insert the GDT CUSTOM-disk and follow the instructions of the custom program.
Enter the IRQ which has been assigned to the PCI INT of the GDT controller (see chapter B,
Hardware Installation). In addition, the GDT BIOS must not be disabled and the boot drive
must be connected to the GDT controller having the lowest BIOS address. Once the kernel
has been newly linked, a message appears asking you whether you want to use this kernel
as the standard kernel. If you do not want the system to which the kernel has been linked to
support a GDT controller, type in n. The ready kernel can be transferred to the N1 floppy
disk copy. For example with:
/etc/mount /dev/fd096ds15 /mnt
cp /unix /mnt/unix (standard kernel)
or cp /etc/conf/cf.d/unix /mnt (no standard kernel)
/etc/umount /dev/fd096ds15
If you wish to, you can later remove the driver from the running SCO UNIX system. Do this
with the custom program, selecting Remove and Entire product. Then use the cursor key to se-
lect the GDT driver. The N1 floppy disk is now ready for the installation. Please continue
reading from section (c). As described in the SCO UNIX manual, the new N1 floppy disk can
now be used to install the system. During the last step of this procedure you will be asked
whether you want to install additional software. Answer with yes and install the GDT driver.
(Note: this should be done before any other additional software is installed). For further
information on installing the system, please refer to the SCO UNIX documentation. Ater
the kernel has been linked, the system needs to be rebooted. To configure the devices co n-
nected to the GDT controller, use the program mkdev (ADM). Please refer to the documenta-
tion delivered with SCO UNIX and to the information given in section G.7.
G.4 SCO UNIX System V/386 3.2v4.x & 3.2v5.x
In principle, SCO UNIX is always installed on the hard disk with Target ID 0 and LUN 0 on
host adapter 0, that is on host drive 0 of this controller. If SCO UNIX is installed from tape
(streamer) the streamer must have SCSI ID 2 and be connected to SCSI channel A of host
adapter 0. For an installation from CD-ROM, the CD-ROM device must have SCSI-ID 5 and
has to be connected with channel A of the GDT controller. When using 3.2v4.x or 3.2v5.x,
you have the option to link the driver to the kernel before starting the kernel (btld (ADM)).
This will allow you to use the GDT controller as the only controller in the system. Use the
GDT BTLD Disk. During the installation, whenever the N1 floppy disk is inserted and the
message
Boot
:
is displayed, do not press <ENTER> immediately, but type in link <ENTER>. The system
will then prompt you for the name of the BTLD driver. Now type in gdth. It may be necessary
to type in the complete boot string. In this case, you have to add the following co mmand:
link=gdth btld=fd(xx)
where xx is the "Minor Device Number" of the corresponding device file. xx = 60 for
fd0135ds18, 3,5" floppy as A,: or xx = 61 for fd1135ds18, 3,5" floppy as B: (see SCO UNIX
system Administrator's Reference, Hardware Dependence, floppy devices). When re-
quested, enter the IRQ which has been assigned to the PCI INT of the GDT controller (see