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I have a 6 GB .ISO file (a PC game) that I would like to split into two 3 GB files so that it would fit into 2 DVDs.

How can I do this? Is there some application or command that can do the job? And after I split it, how do I merge it back together later?

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What kind of disk would it be? Data, DVD-Video, Bootable? etc... – BloodPhilia Jul 23 '10 at 8:36
    
of course it would be data, unless there's a bootable pc game – soul Jul 24 '10 at 6:52
    
Why don't you just use a dual-layer DVD? – Jamie Hanrahan Feb 27 at 22:11
up vote 9 down vote accepted

Either rar to split it into parts, or extract the individual files from the iso with something like imgburn and make a new iso at the destination.

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You can use a file splitter/joiner utility to achieve this. HJSplit and GSplit are two good options. Both are freeware and very easy to use. HJSplit is a 344 KB file that does not need to be installed. A portable edition of GSplit is also available with no required installation.

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There are various File Splitters that work in DOS. Then use COPY /b file1+file2+file_n Originalfile to reassemble.

Or try http://www.filesplitter.org/

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COPY works like a charm and is perfekt for reassembling – iCaramba Dec 30 '14 at 22:58

WinRar is quick and easy.

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if you're on linux you can do:

split -b 3G big.iso part

to split the big.iso into 3GiB parts named partaa, partab etc.

then use cat to put the files back together:

cat part* > big.iso

See man split for more information.

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