User`s manual

165
Chapter H - Using Interactive UNIX
H.3 Installation as Boot Controller
First initialize a hard disk connected to the GDT controller (using GDTSETUP under DOS),
and install it as a host drive (see chapters C and I "Configure host drives"). The host drive
on which you wish to install the Interactive UNIX system must be assigned number 0
(GDTSETUP menu option Configure host drives). Now you can begin with the installation.
During the installation a GDT driver corresponding to the IRQ used by the GDT controller
has to be selected. As discussed in chapter B of this users manual, the PCI System BIOS
automatically assigns an IRQ to a PCI INT. The IRQ used by a GDT controller is displayed by
the GDT BIOS after a cold boot. After having successfully installed the basic Interactive sy s-
tem, use InstallPkg to install the software package OS File Management, kernel Configuration, and
afterwards the GDT driver software. After having installed other desired software, choose
the menu option kconfig to configure the GDT controller as boot controller and to enter any
other device connected to it. Then, a new kernel must be linked and installed (see above).
After Exit and a system reboot, you can partition and mount host drives with sysadm (see
above). You can integrate the GDT driver into the kernel of the copy of the boot disks in two
different ways:
a) There is already a bootable system on another computer
In this case the easiest method is to install the driver software for the GDT controller on
this system and to link a kernel containing the GDT controller as boot controller (see
above). Then copy this kernel to the Interactive boot disk copy. This can be easily done
since this floppy disk contains a mountable file system. You can then start the installation
with this boot disk. Make sure that the controller's IRQ is set according to the entry in kcon-
fig.
b) There is no bootable system available.
For Interactive UNIX 3.2v4, only.
When using this UNIX version, you have to use the GDT Interactive disk called GDT Interac-
tive UNIX 3.2v4 - for boot installation. The installation is carried out according to the Inter-
active UNIX 3.2v4 documentation.
H.4 UNIX Target-ID/LUN of a Host Drive Number
Target-IDs 0 and 1 with LUN 0 to 7 are reserved for
"Direct Access Devices"
(devices be-
having like a hard disk or a removable hard disk and therefore configurable with GDT-
SETUP). There is a fixed correlation between the host drive number in GDTSETUP (menu
"Configure Host Drives") and the target-ID and LUN. When a host-drive has been installed
with GDTSETUP, it has to be communicated to the UNIX system (in kconfig) by assigning a
target-ID and LUN which are determined with the following formula:
Host-Drive Number = 8 * Target-ID + LUN
The host-drive number is the number the drive has in the list of available host-drives in the
GDTSETUP program. The following screen exemplarily shows a list of host-drives in which
only one host-drive is installed.