Using the modification

When you installed the switch in the new bezel (or other location of your choice), you noted which of the 3 terminals of the switch didn't have a wire soldered to it. This is the NORMAL position, and your drive will operate as usual. The other position is the FLIPPY position, which links the output of the added sensor into the drive's control circuitry. Once you've established which is which, it's a great idea to add a small sticker or mark so that you don't have to remember it forever.

Sample command lines for are shown below, but the mod is also tested with and is expected to work with other host software as well.

Copying a normal double-sided disk

Use this mode for capturing true double sided formats, like ibm360_525 or ibm1200_525. Slide the switch to NORMAL and insert the disk face up:

fluxengine read ibm360_525 -o diskname.img

Copying the front side of a single-sided or flippy disk

Use this mode for capturing the front side of a disk, or the back side of the (rare!) flippy disk with two index holes. Slide the switch to NORMAL and insert the disk face up. If using a "head specification", select head 0 only.

fluxengine read commodore1541 -h 0 -c 0-79x2 -o diskname-s1.d64

Copying the back side of a flippy disk

Use this mode for capturing the second side of a flippy disk. Set the slide switch to FLIPPY and insert the disk face down. If using a "head specification", select head 0 only.

fluxengine read commodore1541 -h 0 -c 0-79x2 -o diskname-s2.d64

Writing the back side of a flippy disk

I didn't test it, but this mod should also enable writing to the second side of a flippy disc.

This requires a write-enable notch on the left hand side of the disk (or a second write-protect-ignore modification, not documented here). Set the slide switch to FLIPPY and insert the disk face down. If using a "head specification", select head 0 only.

This guide was first published on Feb 25, 2022. It was last updated on Mar 25, 2024.

This page (Using your Modified Drive) was last updated on Mar 25, 2024.

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