Solve : %systemdrive% question?

1.	Solve : %systemdrive% question?
Answer» Is there a COMMAND LIKE %systemdrive% wich is MOSTLY c:\, for a dvd DRIVE? I WANT to install a program from my dvd to the harddrive. I dont want to copy the program first to the hard drive and then install it with the %systemdrive% command. My ex. start /wait %systemdrive%\Programmas\ts2_client_rc2_2032.exe With what can I replace %systemdrive% so if I mount the dvd in d:\ or e:\ so the pc knows were to find it? Edit: never mind I found it in one of the article on the forum %CD% close topic thx

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