Splitting a Large File into Several Smaller Files

This operation is useful if you wish to transfer a large file that will not fit on removable media (such as floppy, Zip disks, CD-R, etc.) to another machine that is not on the network. Primarily we will do this when backing up video files that are larger than 650MB.

  1. If it is not installed, install \\crb\arc\common software\utilities\hjsplitpro.zip. Simply make an HJSplitPro directory on your hard disk and extract the files from the .zip file there.
  2. Make sure you have enough space on the partition where you will create the split files. You must have at least as much free space as the large file that you are splitting. So if you're trying to split a 1gig avi file, make sure you have 1gig free.
  3. Start HJSplitPro. Select the file to split (this is the large original file). You may have to resize the main HJSplitPro window so you can see the "..." buttons at the right that allow you to select files. Select the directory where the smaller split files will be put (called the output file in the window). Select the size of the split files (called output files). This is in kilobytes. So if you're trying to make files that will fit on a floppy, put in 1400 (this means 1400K). If you want to make files that fit on a CD put in 660000 (this is 660000K, or 660meg).
  4. Click on Start. Numbered files will be generated in the output directory. When it is finished, you can copy the files to the removable media.
  5. Check the files! Join the output files back into a big original. Compare this joined file with the original file that you split. Do this with the DOS prompt command "comp". "comp filename1 filename2". It will tell you if the files compare ok. You may also want to test it if you can (ie if it's an AVI file, it should play just like the original). If the files don't compare ok, or if an AVI won't play, etc. the process failed.
  6. When doing this on the Movie PC, please use the scratch partition (D:\) for splitting (ie. delete everything on D:\, and tell HJSplitPro to put the output files there). This will speed up the process and minimize thrashing of the disk.
  7. If you need to join files that have been split and you don't have HJSplitPro installed on that system, you can just use the copy command. Say we split bigfile.exe into bigfile.exe.001, bigfile.exe.002 and bigfile.exe.003. To join them together, do
    "copy /b bigfile.exe.001+bigfile.exe.002+bigfile.exe.003 bigfile.exe". This merges the three files into one file called "bigfile.exe".
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