If an installation fails, confirm that the computer has sufficient free disk space in the temporary directory, which is required by IBM® Information Server, in addition to the disk space required for the installed components.
WARNING: C: has insufficient space to install the items selected. 1200.4 MB additional space would be needed to install the selected items.
WARNING: / partition has insufficient space to install the items selected. 1200.4 MB additional space would be needed to install the selected items.
df -k