• Greaseweazle is not detected by my host PC

  • Test your USB cable with another device. Charging-only micro USB cables which omit the data wires are very common and will not work to connect Greaseweazle (or any other device) to your PC.
  • If the activity LED blinks a repeated pattern, see the next question in the FAQ.
  • F1 only: Check the resistance between Blue Pill pins A12 and 3.3. If this is not 1.5k ohms then you should remove Blue Pill surface-mounted resistor R10 and manually connect a 1.5k resistor between A12 and A0.
  • F1 only: Be aware of STM32 fake chips which do not work properly.
  • Linux only: Have you previously installed Kryoflux software? Then please read this.

• Greaseweazle blinks the activity LED and is not detected via USB

  • Greaseweazle performs a power-on self test and blinks a diagnostic code on failure:
    • 1 blink: Board version straps are unstable. Check for bad soldering around those pins (PC13-15).
    • 2 blinks: Board version straps not recognised. Check you're loading the latest firmware.
    • 3 blinks: Oscillator failed to start up. Check the external oscillator.
    • 4 blinks: Unrecognised or incorrect microcontroller chip.

• Commands fail with 'Track 0 not found' or 'No Index'

  • The default drive is A, which assumes a PC drive (drive-select DS1, pin 12) and a ribbon cable with a twist across pins 10-16.
  • A common alternative setup is a PC drive with straight ribbon cable. In this case you must select drive B (--drive=b)
  • Another common setup is an Amiga, Atari ST, or other vintage drive which responds to drive-select DS0 (pin 10). In this case you must use a straight cable and select drive 0 (--drive=0).
  • For further info please see the documentation for Drive Select.

• Commands still fail with 'Track 0 not found'

  • Confirm that your ribbon cable is the correct way round.
    • Look for pin 1 on the Greaseweazle and for pin 1 on the drive.

• Commands still fail with 'No Index'

  • Check your drive connections again.
  • Check that you have a disk inserted in your drive.
  • Check whether your drive requires 12-volt power.
    • If so you will need an external power supply to spin the motor.

• Writes fail with 'Failed to verify Track 0.0'

  • Check that your disk media is good.
  • Can you read disks okay with your setup? If not, write verification cannot possibly succeed.
  • Check the write-enable jumper on your Greaserweazle board.

• Commands fail with 'ImportError: urllib3 v2.0 only supports OpenSSL 1.1.1+, [...]'

  • Downgrade Python's urllib3 to v1.x. For example: python3 -m pip install "urllib3<2"