Direct Migration to AIX 6.1 [from AIX 5.1, 5.2, 5.3] http://publib.boulder.ibm.com/infocenter/systems/scope/aix/index.jsp Using this scenario, you can migrate a system from AIX® 5.1 to AIX Version 6.1 from media Step 1. Prepare for the migration bash-2.02# oslevel -s 5300-06-01-0000 [OS Level which we are going to migrate] bash-2.02# Before starting the migration, complete the following prerequisites: Ensure that the root user has a primary authentication method of SYSTEM. You can check this condition by typing the following command: # lsuser -a auth1 root If needed, change the value by typing the following command: # chuser auth1=SYSTEM root Make sure that other users who have access to your system must be logged off. There must be adequate disk space and memory available. AIX requires 256–512 MB of memory and 2.2 GB of physical disk space. Run the pre_migration script located in the mount_point/usr/lpp/bos directory on your media. # mount -v cdrfs -o ro /dev/cdN /mnt [mount the media @ /mnt, N is media number ] Ex. # mount -v cdrfs -o ro /dev/cd0 /mnt Note: Do not remove the data created by the pre_migration script, because it is used by the post_migration script.

pre_migration scripts generates following files and configuration files in /home/pre_migration.XXXXXX directory and which are important for post_migration process. saved_configuration_files\usr \var and \etc configuration_files_being_merged configuration_files_missing_from_system configuration_files_not_merged device_software_being_removed other_software_being_removed software_checksum_verification software_consistency software_file_existence_check software_installed_before_migration software_link_existence_check Step 2. Boot from the AIX product media Insert the AIX Volume 1 media into the media device & Reboot the system by typing the following command: # shutdown -r Type 2 to select 2 Change/Show Installation Settings and Install in the Choice field and press Enter.

Continued………

Step 3. Verify migration installation settings and begin installation When the Migration Confirmation menu opens, follow the menu instructions to list system information or continue with the migration by typing 0 and pressing Enter.

Migration is in process…………

Step 4. Verify system configuration after installation After the migration is complete, the system will reboot. Select terminal as VT100. Select the Accept Licenses option to accept the electronic licenses for the operating system. Select Exit the Configuration Assistant and select Next. Or, press F10 (or ESC+0) to exit the Installation Assistant. When the login prompt displays, log in as the root user to perform system administration tasks. Run the /usr/lpp/bos/post_migration script. [system directory]

1) It will check software that was unchanged during migration. 2) It compares saved configurations files 3) Will run lppchk command 4) And will save all information @ /home/post_migration.XXXXXXXXXX

As shown.

bash-2.02# cd /home/post_migration.090409063536 bash-2.02# ls compared_saved_configuration_files software_consistency filesets_to_be_updated software_file_existence_check filesets_updated software_installed_after_migration software_checksum_verification software_link_existence_check bash-2.02# bash-2.02# oslevel -s 6100-00-01-0748 bash-2.02# Check log files, they show the migration is successful……………? Regards, Amit Sapre