I was trying to migrate to 6.1 tl 6 sp 1 by using alt_disk_install command to a empty disk on a client. Current nim server oslevel is 7.1 tl2 and client OS level 5.3tl12. But I want to alt_disk_install from nim. I have 6.1 tl6 sp1 lpp_soruce and spot on nim server. When had run smit nimadm from nim server target to my client machine name and allocated to lpp_source and spot for 6.1 tl6 sp1. I did start alt installation procress, after almost 2 hours I got error message, 0506-915 No record matching /client_server name:/alt_inst/opt was found in /etc/filesystems. Can you provide proper procedure to fix the problem.