Files with the .gi extension are most commonly associated with disk image files. These files are created by a variety of disk creation software applications. The GI files often contain duplicate copies of CDs or DVDs. They can also contain a backup of the information stored on a user's hard drive. Disk creation applications that commonly use the GI file format include Sony CD Extreme, Sonic RecordNow! and UltraISO.
The .gi file extension is also used for Tuningwrench Audio Utility compressed files.
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If you have additional information about the GI file format or software that uses files with the GI suffix, please do get in touch - we would love hearing from you.