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Wavecom W-4100
Floppy disk drive replacement
This page describes how the internal floppy disc drive (FDD) of the
Wavecom W-4100(D) decoder can be replaced by a modern equivalent with
USB stick. This may be necessary when the original floppy discs have become
unreliable over time, or are missing altogether. Although there are a number of
FDD replacement candidates that might be suitable for the W-4100, we have
chosen the GoTek 3.5" FlashFoppy with OLED display, as it is the most versatile one.
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- Purchase GoTek FlashFloppy with OLED display (and 3.5" light beige enclosure)
→ Ensure that it is flashed with the latest FlashFloppy firmware ➤ FlashFloppy wiki - On the FlashFloppy: set jumper S1 (no other jumpers)
- Replace the existing FDD by FlashFloppy
- Format a USB memory stick as FAT32 - not ExFAT, NTFS or any other format! 1
- Use WinImage (on Windows PC) to create a 1.44 MB disc image
- Copy the contents of the original floppy into the disc image
- Name the disc image something like
W4100D_6_60.IMA - Copy the disc image onto the USB memory stick
- Place the memory stick in the USB socket at the front of the FlashFloppy
- Start the W-4100
- Select the desired floppy disc image on the device's OLED panel
- Rotate the knob until the name of the disc image is displayed
- Press the knob to store the setting - Reboot the W-4100
- The device should now start as usual (but faster)
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On Apple MacOS, FAT32 is known as FAT (MSDOS).
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The selected disc image will be remembered next time you start the
W-4100, which means that no further interaction with the FlashFloppy is
required.
A normal boot with the original FDD takes approx. 8.5
minutes to load. With the FlashFloppy in place, this is approx. 1.5 minute.
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© Crypto Museum. Created: Friday 25 September 2026. Last changed: Saturday, 26 September 2026 - 10:32 CET.
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