IBM JS20 Hardware Maintenance Manual - Page 77

Flag -c -r Description Commits the temporary flash image when booted from the temporary image. This overwrites the permanent image with the temporary image. Rejects the temporary image when booted from the permanent image. This overwrites the temporary image with the permanent image. Using the standalone CD-ROM and online current diagnostics The diagnostics consist of standalone diagnostics and online diagnostics. v The standalone diagnostics must be booted before they are run. If booted, they have no access to the AIX error log or the AIX configuration data. v Online diagnostics are resident with AIX on the disk or server. They can be booted and run concurrently (called concurrent mode) with other applications. They have access to the AIX error log and the AIX configuration data. Notes: v If this system unit is attached to another system, be sure you isolate this system unit before stopping the operating system or running diagnostic programs. v The AIX operating system must be installed in order to run online diagnostics. If the AIX operating system is not installed, use the standalone diagnostic procedures. Standalone and online diagnostics operating considerations Before you use the diagnostics, consider the following information: v Run online diagnostics in concurrent mode whenever possible, unless otherwise directed. The online diagnostics perform additional functions as compared to standalone diagnostics. The AIX error log functions are only available when diagnostics are run from the disk (concurrent diagnostic) drive. v When running online diagnostics, device support for some devices may not have been installed. If this is the case, that device does not appear in the resource list. v When running standalone diagnostics, device support for some devices may be contained on supplemental diagnostic media. If this is the case, the device does not appear in the resource list when running diagnostics unless the supplemental media has been processed. Running online diagnostics Consider the following information when you run the online diagnostics from a server or a disk: v The diagnostics cannot be loaded and run from a disk until the AIX operating system has been installed and configured. v When the system is running in a full machine partition, then, if the diagnostics were loaded from disk or a server, you must shut down the AIX operating system before powering off the system unit to prevent possible damage to disk data. This is done in one of two ways: - If the diagnostic programs were loaded in Standalone mode, press the F3 key until Diagnostic Operating Instructions displays; then follow the displayed instructions to shut down the AIX operating system. - If the diagnostic programs were loaded in maintenance or concurrent mode, enter the shutdown -F command. Chapter 8. General AIX and xSeries standalone diagnostic information 67