Grand Unified Bootloader (Grub); Figure 101: Serial Console "Hyperterminal - WAGO -I/O-IPC-C6 Manual

178 Operating System
14.2

Grand Unified Bootloader (GRUB)

GRUB is used as the bootloader for the I/O-IPC. To change the start settings of
the Linux kernel, press one of the following keys within the waiting time you
have set during the start phase of GRUB:
• A key on the keyboard connected to the I/O-IPC
• In the case of an opened terminal program, a key on the PC keyboard

Figure 101: Serial console "hyperterminal"

In the GRUB, you have a choice of two start settings for the Linux file system:
• WAGO
Starting of the Linux file system from the internal flash memory.
• WAGO_NFS
Starting of the Linux file system from a remote NFS partition, to be defined.
To alter the bootstring (transfer parameters in the kernel), press the E key on the
keyboard. This will enable you to determine a fixed IP address under IP= or to set
the resolution of the monitor connected to the I/O-IPC under VGA=.
The change to the startup behavior is not saved permanently. If this behavior is to
be permanently saved, the file /boot/grub/menu.lst in the Linux file system must
be altered.
Pos: 48.2 /Dokumentation allgemein/Gliederungselemente/---Seitenwechsel--- @ 3\mod_1221108045078_0.doc @ 21810 @ @ 1
WAGO-I/O-SYSTEM 750
758-874/000-131 WAGO-I/O-IPC-C6
Manual
Version 1.0.0