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You know that the main game is always played in computer by file.
But if you have more knowledge about file type you can batter handle your system and your hard drive.
Sometime this is more handy when you transfer some file with your pen drive / usb drive and you need some more space, but physically it’s not possible to increase your hardware capacity immediately.
But you can do this by decreasing your file size.
You can understand it with this example -
I have two bin file
Total size of .bin & .cue files = 1.51 GB
After converting bin into iso
Total size of .iso files = 1.32 GB
Now you save = .19 GB / 194.56 Mb (where 1024 mb = 1 GB)

You can easily convert your bin file into iso with anytoiso free utility.
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We can even compress the files using one of the best compression softwares like 7-zip or winrar which can really compress the files…..
I had to copy and there was only 5 MB left in the pen drive, so I thought of giving it a try, by using 7-zip, the 20 mb TC got compressed in 2MB file, after that I started using it, then came to know its better to compress several small files into one package(this is because small files takes larger than they really need, coz of file system)…..
Now I usually compress .iso images of all the CD’s that I had made earlier coz I get good compression ratio(new size*100/original_size) on .iso files using 7-Zip…..