I downloaded Maverics 10.9.2 ISO image and but I couldn't find 8.5gb dual layer dvd. Downloading dmg image is hard thing to do because downloading torrent with my internet will take a long time. I used win32imagewriter to write the image to my usb drive but it doesn't work. I also tried extracting the contents directly into USB drive and with the the help of BDU I booted the usb but it shows error. Similarly, I tried it to install it on virtual box and it gave me plist parsing error and I suppose it has to do with my specs. Is there any workaround for installing niresh using ISO file without dvd?