Resetting the managed system to a nonpartitioned configuration using version 6 or earlier of the HMC

You can erase all of your logical partitions and reset the managed system to a nonpartitioned configuration. When you reset the managed system, all of the physical hardware resources are assigned to a single logical partition. This allows you to use the managed system as if it were a single, nonpartitioned server.

Attention: By resetting a partitioned managed system to a nonpartitioned configuration, you will lose all of your logical partition configuration data. However, resetting the managed system does not erase the operating systems and data from disk units on that managed system.

Before you reset the managed system, ensure that the hardware placement in the managed system supports a nonpartitioned configuration. If the hardware placement in the managed system does not support a nonpartitioned configuration, you must move the hardware so that the hardware placement supports a nonpartitioned configuration. For more information about how to place the hardware in your managed system to support a nonpartitioned configuration, contact your marketing representative or business partner.

Also, if you plan to use an operating system that is already installed on one of the logical partitions on the managed system (instead of reinstalling the operating system after you reset the managed system), consider how the console used by that operating system will change when you reset the managed system.

If the operating system that you want to use is AIX®, log into AIX and enable the login prompt for the virtual serial port vty0 using either SMIT or the chdev command. You can then reset the managed system, use a physical serial console to log into AIX, and use SMIT or chcons to change the console device to the console device you want to use.
If the operating system that you want to use is i5/OS®, the device tagging that you set up on the HMC no longer applies after you disconnect the HMC. Before you reset the managed system, switch the console setting to the device that you want to use.

To reset a partitioned managed system to a nonpartitioned configuration using version 6 or earlier of the HMC, you must be a super administrator or operator. For more information about user roles, refer to Tasks and roles. You must also have an Advanced System Management Interface (ASMI) login profile with an administrator authority level.

To reset a partitioned managed system to a nonpartitioned configuration using version 6 or earlier of the HMC, follow these steps:

Shut down all logical partitions on your managed system using operating system procedures. For more information about shutting down logical partitions using operating system procedures, see the following information:
- For logical partitions running AIX, see Shutting down AIX in a logical partition.
- For logical partitions running i5/OS, see Shutting down i5/OS logical partitions.
- For logical partitions running Linux®, see Using the Hardware Management Console to shut down Linux logical partitions.
If the managed system powered off automatically when you shut down the last logical partition, power on the managed system to the Standby state. Complete the following:
1. In the contents area of your HMC, right-click the managed system and choose Power On.
2. Select the power-on mode of Partition Standby and click OK.
3. Wait until the contents area displays a Standby state for the managed system.
Initialize the profile data on the HMC. Complete the following:
1. In the contents area, right-click on the managed system, choose Profile Data > Initialize.
2. Click Yes to confirm.
Clear the partition configuration data on the managed system. Complete the following:
1. On your HMC desktop (outside of any of the displayed windows), right-click Terminal > rshterm. The Restricted shell command line interface displays.
2. Type the command: lpcfgop -m managed_system_name -o clear. In this command, managed_system_name is the name of the managed system as it displays in the content area.
3. Enter 1 to confirm. This step will take several seconds to complete.
Optional: If you no longer intend to manage the system using the HMC, remove the connection between the HMC and the managed system. To remove the connection between the HMC and the managed system, complete the following:
1. In the contents area, right-click on the managed system.
2. From the menu, click Reset or Remove Connection.
3. Select Remove connection and click OK.
Access the Advanced System Management Interface (ASMI) using a Web browser on a PC. If you do not already have a PC that is set up to access the ASMI on the managed system, you will need to set up the PC at this point. For more information on accessing ASMI, see Accessing the ASMI using a Web browser.
On the ASMI Welcome pane, log in using the admin user ID (enter admin into User ID, enter the admin password into Password, and click Log In).
In the navigation area, expand Power/Restart Control and click Power On/Off System.
Set Boot to server firmware to Running.
Click Save settings and power off.
Click Power On/Off System periodically to refresh the window. Repeat this step until Current system power state: Off is displayed in the navigation area.
Click Save settings and power on.
Wait for the managed system to restart. It can take several minutes for the managed system and operating system to restart completely.