Recently I tried to install SQL Server 2008 on the E drive of my server.
It went totally wrong when I tried to change the installation path to my E drive.
The error “The INSTANCESSHAREDWOWDIR command line value was not specified. The value must be specified when …” entered the installation process when I changed the drive letter (when you select the features) to E. (strange enough when I changed it back to C the error was still there)
Here is the process you need to follow to install your full SQL (including the installation files) on an other drive than your C drive.
First of all you need to go through the process as you usually would do. (without changing any of the installation paths)
1. Installing the Setup Support Files
4. Selection of the features needed to be installed
(Next screenshot can be different on your machine. This because of the fact that I already successfully went through the installation process)
On your screen probably the “Shared feature directory (x86)” will be editable.
10. After editing the configuration file you can close the setup and restart it using the commandline with some parameters.
setup.exe /Action=Install /configurationfile=”PATH”