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I have a computer running windows 7, with 4 HDDs of various sizes. I've been pursuing a steady upgrade path, where each HDD is large enough to store a previous two. My issue is, I want to know if one of the smaller drives I wish to remove has any currently installed programs. There is a Program Files directory on the drive I want to remove, with a few Adobe products, some games, some minor, deletable, uninstallable programs, but I don't want to have to uninstall every program I see a listing for in that Program Files directory. I'm not even sure if any of these programs are currently installed.

So, is there a way to see what programs are currently installed on drive F:\ , for example?

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up vote 1 down vote accepted

Open that Program Files directory, determine the program names, then use the Registry Editor (Start / Run / regedit) and check the following values:

HKEY_LOCAL_MACHINE\Sostware\Microsoft\Windows\CurrentVersion\Uninstall\<GUID or Program Name>\InstallLocation

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Uninstall\<GUID or Program Name>\InstallLocation

The InstallLocation string value (REG_SZ) should contain the path to the directory where a program is installed, so if any of the InstallLocation strings match with directories under F:'s Program Files, you'll have found the programs that'll break if you simply get rid of the files.

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Thanks! That did the trick. Lucky for me, there are only a couple. – Smittles Jan 6 '13 at 4:34

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