IBM WebSphere Application Server ND installation using Installation Manager

Download IIM(IBM installation manager):
command line:

./installc -c

GUI problem when you can't add second and third disk:
Check you repository.config file and add there 2 extra line with disk 2 and 3:

cat ~/Desktop/was/repository.config
LayoutPolicy=Composite
LayoutPolicyVersion=0.0.0.1

repository.url.disk1=./disk1
repository.url.disk2=./disk2
repository.url.disk3=./disk3