Ibm RS/6000 User Manual download pdf (Page 102)

5.1.3 bootlist Command

On the E20 and F30 (and 43P), the bootlist command can be used to alter the

customized Boot List. For example, you can set the customized Boot List with the

following command:

bootlist -m normal hdisk

This would set the customized Boot List in the NVRAM to hdisk0. Then, hdisk0

would then be used to attempt a boot in Normal mode. It should be noted that the

Boot Device Order List service (which is the default Boot List) cannot be altered.

Attempting to change the service Boot List this way will result in the following error:

bootlist -m service rmt hdisk cd

514-22 bootlist: Invalid mode (service) for this model

One other point to note is that the RSPC machines cannot use the generic terms

such as scdisk or rmt for devices. All the devices must be explicitly stated, for

example rmt0. Trying to use generic options will result in an error:

bootlist -m normal scdisk

514-22 bootlist: Invalid device name (scdisk)

There are, therefore, two ways to alter the customized Boot List: from System

Management Services and from AIX using the bootlist command. There is no

way to alter the Service Boot List as there is with the microchannel-based RS/6000

systems

5.2 Entering Debug Mode

On a microchannel-based RS/6000 system you can enter debug mode, lldb, by

switching the key to Service and pressing one of the following key combinations:

 CTL-ALT-NUMPAD4 (on a graphical console)

 CTL-\ (on an ASCII display)

The CTL-\ key combination is valid on most OEM terminals. On some IBM 3151

terminals, using a cartridge, you may have to press CTL-NUMPAD4.

Since the E20 and F30 have a static electronic key which is set to Normal during

the normal operation of AIX, the above key sequences will not work unless the

debugger, lldb, is pinned. You can do this by entering the following command and

rebooting your machine:

bosboot -D -a -d /dev/hdiskx

Where hdiskx is the disk containing the boot logical volume. After rebooting your

machine, using either of the two key sequences shown above will invoke the

debugger on an ASCII terminal (although the debugger can be invoked with a

graphical display keyboard, an ASCII terminal must be attached to use the

debugger). Be aware that anyone using either a graphical or ASCII console will be

able to make the machine unavailable to other users.

78 Introduction to PCI-Based RS/6000 Servers

1 2 ... 97 98 99 100 101 102 103 104 105 106 107 ... 227 228

No comments

Ibm RS/6000 User Manual Page 102