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In computer software, making backups of existing media for future use or copying can be an important tool for business and personal use. Many options exist to make backup copies of compact discs (CDs) and digital video discs (DVDs). The company Nero began releasing its self-titled software in 1997 for use in burning or creating new discs from existing discs or files. Nero remains one of the leading competitors in disc backup utilities as well as several other software genres, including multimedia suites. The NRG file type is a disc image file in Nero's software.
Uses
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Image files are digital copies of CD and DVD files. When you create an image file, you store the data of the CD or DVD within the image file and preserve file names and folders. You can later use the image to create additional copies or modify it with additional files. You can also use image files with a virtual drive that uses the image file as a CD or DVD without the need for an actual DVD-ROM drive.
Types
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The original NRG file type consisted of 32-bit integers (whole numbers ranging from 65,536 - 4,294,967,295) placed in a series of chains. With upgrades to the Nero software, Nero modified the NRG file type to support 64-bit integers (whole numbers between 4,294,967,296 - 18,446,744,073,709,551,615). This change resulted in better performance with larger files like DVD images.
Applications
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Files with the .nrg extension are mainly associated with Nero software. However, you can use them in similar applications like PowerISO, MagicISO, and WinMount. You can also convert them into the ISO file format through applications like Nrg2Iso and Nrg4Iso.
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