In this video I am downloading Visual Studio 2013 Professional With Update 4 from Dreamspark. To embed multiple sdc files in one sdc file and further unpack it to get the iso file:- (Follow these steps carefully) 1.Download unpacksdc v1.1. http://web.archive.org/web/20130914102726/http://imagi.pl/files/unpacksdc11.zip 2. Copy the four sdc files into any folder and rename them as 1.sdc, 2.sdc, 3.sdc, 4.sdc respectively. 3. Open cmd and navigate to that folder. 4. Enter this command exactly copy /b 1.sdc+2.sdc+3.sdc+4.sdc 5.sdc { Syntex } copy /b firstfile+secondfile+thirdfile+fourthfile newfile 5. After doing that extract the iso file from 5.sdc. For this use this command i) Navigate to the same folder (the previous one) ii) Enter this command exactly "unpacksdc 5.sdc directory" (without double inverted commas) (here directory will be the location of the folder where you want to extract the iso file.)