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I bought a SSD to make it C:. As SSD size is pretty small, I'm trying to reduce the number of files in C:. After running WinDirStat, I found that 4.6G of space is used for c:\Windows\Installer.

Is it safe to link the directory to E: (HDD) after coping all the installer files to e:?

mklink /d e:\windows\installer c:\windows\installer
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I usually just delete most of the stuff in there. It’s generally not needed unless you are repairing or updating the relevant softwares (which you probably have the installation media for anyway), so it won’t matter (you can point the installer to the media when it asks). The only problem I’ve had when deleting them is that some poorly made installers will require them (or the installation media) in order to uninstall (which is ridiculous since you are not adding any files). –  Synetech Jun 23 '11 at 16:57
    
@Synetech THat is actually my biggest problem with Windows Installer. I need to make changes to my Visual Studio installation quite often. Therefore I cannot remove the installer files as this then requires me to uninstall the application before i can install or remove new components. –  Maurice Stam Apr 11 '12 at 8:51
    
Ack! You should be using junctions, not symbolic links. –  David Schwartz Apr 11 '12 at 9:45
    
@Aphelion, maybe you should be figuring out why you have to make frequent changes; that’s not normal. Are you simply adding some things that you had not installed? –  Synetech Apr 11 '12 at 18:20
    
@Synetech Well actually recently I had to install service packs. New SDKs. Testing beta versions of software. This is not the issue. Simply a requirement for me, (and for the designers of Windows Installer) is that my packages are available on my machine. –  Maurice Stam Apr 11 '12 at 18:28
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