Extract text from Floppy disk images (FDI)
To convert FDI Disk images to another format, you need NEC PC-98 Emulators or other Disk Image software.
To convert other file formats to the "Emulator Disk Image" file type, you need software like NEC PC-98 Emulators or a similar tool.
The .FDI file extension is most commonly associated with Floppy Disk Image files used by retro computing emulators. It serves as a digital sector-by-sector backup of a physical floppy disk, used predominantly for vintage systems like the NEC PC-98, ZX Spectrum, and Amiga. Another major use for the .FDI format is the FormDocs Filler Form, a proprietary document used by FormDocs to store electronic forms. Additionally, the extension is used by Fluxus Network software for phylogenetic network drawings, and occasionally for Juki machine embroidery designs.
These formats present significant real-world challenges. For disk images, the format is tied to specific legacy emulators. The structure is non-standard, meaning modern operating systems like Windows or macOS cannot mount or read them natively without third-party tools like FIVEC. For FormDocs, the file is proprietary and requires a paid software license to open, locking your business data inside a closed ecosystem and making it impossible to open in a standard web browser.
Converting .FDI disk images typically involves extracting the internal files or converting the image to more standard raw dump formats like IMG or BIN. For FormDocs files, exporting the form to PDF is highly recommended to ensure long-term readability and sharing capability across all modern devices.
Because these files are heavily specialized or proprietary, standard online converters often fail to process them. Often, only the original software or emulator can properly read or export the data. We can inspect the file, reveal raw text or internal directory structures, and if our analysis detects a supported underlying or embedded format, viewing or conversion may still be possible.
Convert.Guru analyzes your FDI file, detects the exact format, and lets you read the text inside.
Users also converted FDD, HDI, RTT, ISA and ISK files.
If you want to convert FDI file to ISO, IMG, DMG, VHD, VMDK, VDI, HDD, QCOW, QCOW2, RAW, VBOX or OVA, you can use NEC PC-98 Emulators or similar software from the "Floppy Disk Image Storage" category. In the File menu, look for Save As… or Export….
To convert VFD, DMG, OVA, IMA, VBOX, ADF, PVS, VHD, OVF, ISO, DSK or IMG files to FDI, try NEC PC-98 Emulators or another comparable tool in the "Floppy Disk Image Storage" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our FDI converter.