How to Make a Fragmented ISO
Splitting or creating a fragmented ISO is a useful way of dividing large files into manageable sizes for burning to CDs or DVDs, or for storing on your hard drive. Although your computer does not come with default software to split ISO files, there are several options to choose from, including Altap Salamander File Manager and HJSplit for Windows, which allow you to choose the desired size of split files. Other programs available for free trial downloads, like MagicISO, offer customized options for choosing specific files within the ISO you want fragmented.
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Instructions
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Altap Salamander File Manager
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1
Open your Web browser and visit the download page for Altap Salamander (see Resources). Click the red "Download" button in the middle of the screen and wait for the program to download to your computer. Double-click the ".exe" program file when your download has finished and follow the installation instructions. Choose a location on your hard drive to save the program to, agree to the licensing terms and launch Altap Salamander.
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Locate your input ISO file using the navigation panel in the left-hand portion of the screen, then highlight its icon.
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Click the "Plugins" tab at the top of Altap Salamander and select the "Split & Combine" option.
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Press the "Number of Parts" box so a check mark appears and type the number of parts you want to split your ISO file into. Click the "Size of Each Part" drop-down box and choose a desired output size for each ISO.
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Press the "Configure" button in the lower left corner for advanced output options. For general ISO fragmenting, it is best to leave these options alone.
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Click the "..." button in the top left corner of the Split menu and choose an output location for your ISO files. Press "OK" to begin fragmenting your ISO file.
HJSplit for Windows
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Go to the HJSplit for Windows download Web page (see Resources). Scroll down the page, click one of the "hjsplit.zip" sponsored download links and wait for the ZIP file to save to your computer. Double-click its icon to unarchive its contents. Double-click the enclosed ".exe" HJSplit program file and follow the onscreen installation instructions. Accept the terms of use and launch HJSplit.
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Click the "Split" button in the top left portion of HJSplit's main program screen.
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Click the "Input File" button and navigate via the popup Windows Explorer screen to your input ISO file. Highlight its icon and press "Open" to return to the File Split menu.
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Enter the desired file size for your two output ISO files in the "Split File Size" fields in terms of KBs or MBs. The number of files saved depends on how large your input ISO file is compared to the file size specified. For example, if you split a 1 GB file into 250 MBs, HJSplit outputs four files.
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Click "Start" to begin fragmenting your ISO. Your split files automatically save in the same folder as your input ISO.
MagicISO
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Go to the download page for MagicISO (see Resources). Click one of the "Download Site" options at the top of the screen and wait for your free trial version to save to your hard drive. Double-click the ".exe" program file when your download has finished and follow the installation prompts to choose a location on your hard drive to save the program to. Agree to the licensing terms and open MagicISO.
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Click the "File" tab and select "Open" in the top left corner of MagicISO to locate and reveal your input ISO's contents in the left portion of the screen.
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Click the "New Folder" icon near the top of MagicISO to create a new folder in the right-hand panel. Enter a folder name that corresponds to your current ISO file so you can easily locate it in the future.
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Drag and drop the desired ISO files on the left side of the screen to your newly created folder. Click the "Save" button to save your new ISO.
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