How to install AIX 7.2
First of all you need to have an IBM account which is linked to some contracts or machines.
Secondly, you need to download the AIX 7.2 images from this link:
After you have the udf files you need to mount them and create the lpp_source:
unixcodersnim:/root# loopmount -i /export/nim/images/AIX_V7.2_Base_Install_7200-00-00_DVD_1_of_2_122015.udf -o "-V cdrfs -o ro" -m /mnt/dvd1 unixcodersnim:/root# loopmount -i /export/nim/images/AIX_V7.2_Base_Install_7200-00-00_DVD_2_of_2_122015.udf -o "-V cdrfs -o ro" -m /mnt/dvd2 unixcodersnim:/root# nim -o define -t lpp_source -a server=master -a source=/mnt/dvd1 -a location=/export/nim/lppsource/lpp_aix72_tl0_sp0_full lpp_AIX72_TL0_SP0_full
Now you need to complete the lpp_source with the second DVD:
-> smitty nim
-> Perform NIM Administration Tasks
-> Manage Resources
-> Perform Operations on Resources
-> Select “lpp_AIX72_TL0_SP0_full”
-> Select “update = add or remove software to or from an lpp_source”
-> Select “add”
-> Enter: “/mnt/dvd2”
-> Enter: “all” in “SOFTWARE Packages to Add”
-> Enter to complete
Now if you check with lsnim |grep AIX72 you should have the following resource:
unixcodersnim:/root# lsnim |grep AIX72 lpp_AIX72_TL0_SP0_full resources lpp_source unixcodersnim:/root# lsnim -l lpp_AIX72_TL0_SP0_full lpp_AIX72_TL0_SP0_full: class = resources type = lpp_source arch = power Rstate = ready for use prev_state = unavailable for use location = /export/nim/lppsource/lpp_aix72_tl0_sp0_full simages = yes alloc_count = 0 server = master unixcodersnim:/root#
It is very important to have the simages attribute set to yes because otherwise you will not be able to install the Operating System from sctach.
After you complete these steps you can perform an normal install of a AIX system using the NIM.