File extension .FLG
Full Name | Developer | Category |
---|---|---|
IsoPuzzle Flag Format | The IsoPuzzle Team | Disk Image Files |
FLG (IsoPuzzle Flag File) is a .FLG format used specifically by IsoBuster software. This particular format is a data file, also called a flag file, which stores information regarding the "flags" stored on an optical disk such as a CD or DVD. FLG files contain Unicode text and can be used to save progression in ripping actions taken in IsoBuster to back up data from the optical disk. These files are created automatically anytime .ISO, .BIN, or .IMG files are extracted from the disk.
Technical Details of FLG file
The FLG file is a plaintext (Unicode) file that stores information about where and how data was ripped from the disk. The file includes information like the path and filenames, location of splits, and distribution of any corrupted parts. Splitting action taken to maintain consistent sizes across sectors is also recorded precisely in the FLG file. This helps IsoBuster to read and understand how certain activities should be taken when recovering data from an optical disk. FLG files can help recover data inaccessible on an optical disk due to age, damage, or other issues and can often be used to restore corrupt files that have been deleted from a disk. Other similar file extensions are .ISO, .BIN, and .IMG.
Programs for WINDOWS system
After installing the required software, the operating system will usually automatically associate an unknown file type (in this case .FLG) with the new application. If this does not happen, we can help the system a bit by selecting the software for it, which it should always use to open files with the .FLG extension.
When choosing the software we can select the system to use this software every time.
Remember!
Using it for the first time it is good to check whether the .FLG file opened in the application can be read by us and opens in a way that allows us to use it. If everything is in order, select this option the next time you open a file with the .FLG extension. However, if the file has not opened correctly, we have to look for a different software, with which we can open files with the .FLG extension. Select a different software from our list and install it on your computer. After the software is installed, repeat inspection openings of a .FLG file. Sometimes you have to repeat the operation several times.
Other instructions
If none of the programs listed by us to work with the .FLG file has not meet your expectations, you can try searching other websites. But remember to avoid downloading programs "that can open any file". These applications not only have very limited functionality, but may also expose you to expense tens of dollars when purchasing a license.
In the vast majority of cases you will find the program dedicated to support the .FLG file, or any other file format. In addition, there is a chance that it will be a free program, and its functionality (concerning the .FLG file) will be extended to the maximum.
It is also good to check
- if the .FLG file has no errors
- or if it has been copied (or downloaded by the browser) thoroughly
Author’s guidelines

Mr B. Adam
Author of the guidelines / Founder of FileExtension.info
New technologies enthusiast, helping to solve problems with the files.
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