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Old 18th March 2015, 20:40   #8
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Join Date: Feb 2007
Location: Rijeka, Croatia
Posts: 225
You'd want CABSetup if you needed your install to span on multiple physical media. If you'll be distributing over the wire there are better choices, with better compression. For what I suggested, yes, you need WinRAR to prepare the data. On the target system you only need to extract UnRAR.exe (~300 KB). You can also use 7zip, and there are NSIS plugins for that. I only suggested RAR5 because in your case it could potentially save more space.
P.S. In the code I posted you also need AddSize, so installer knows how much space is required.

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