A bootstring is a special command or text string that is
entered at the
Boot: prompt displayed at system
startup. Normally this process is transparent to the
operator because when you press <Enter> at the
prompt, the system uses a pre-defined bootstring such as
hd(40)unix specified by DEFBOOTSTR in
There are special bootstrings that permit you to define device configurations that override system defaults (without relinking the kernel). For example, you might be using a tape drive at a non-standard address or the system might not be recognizing your host adapter correctly. In a similar way, new device drivers that are not supplied with SCO OpenServer systems can be installed from a floppy disk using the link bootstring.
To define or redefine a device at boot time:
Make certain the bootstring parameters you use match your
hardware configuration. Additional bootstrings are
documented in the
Boot:prompt. If you are performing an installation, note that this is the only time the
Boot:prompt appears; you are not given the opportunity to reboot during the installation.
Now enter the necessary bootstrings separated by spaces.
defbootstr must be included on the boot line. The system then boots according to the information you provided. If you entered the bootstring incorrectly, an error message is displayed.
For additional information on the boot process and bootstrings, see ``Configuring devices with bootstrings'' and the following manual pages: boot(HW), boot(F), bootstring(HW), link(HW), and mem(HW).