Go to the desired track and side using standard FDC 765 commands. InsertĪnother disk in the other drive (B: in this example). Want to fully read in one drive (let’s say A: in this example). With only 1 disk drive is physically impossible). This algorithm requires two disk drives installed (read theġDISKDRV.TXT file to get an explanation why reading raw data generally Here's an excerpt from docs\tech\rawflopy.doc in the Disk2FDI zip file: This answer comes from the documentation for the utility Disk2FDI. The floppy controller doesn't know when the disk (hardware) has been switched on the port (software), so a transfer command can be issued on the IBM formatted disk, but run on the Amiga disk.
This only works with 2 drives on the same controller and cable. How does the two-drive trick work? Why does it require two drives, and how does having two drives get over the fundamental incompatibility of Amiga disks and PC floppy disk controllers? Source code is included but largely uncommented so I'm mystified as to how this is supposed to work. There's no information about how the "two-drive trick" works. From a command prompt, run: adfread.exe newimage.adf Its instructions are pretty simple: - Install fdrawcmd.sys from I found adfread-1.1 which implements the two-drive trick. However there's references to a "two-drive trick" which allows a PC with two floppy drives to successfully read an Amiga floppy disk and generate an ADF image file. This has been discussed in a few questions on this site (put amiga floppy into the search box to see them). Standard belief is that the floppy disk controllers used on PCs are incapable of reading Amiga floppy disks, due to the PC disk controller expecting a very specific low-level format of disks, whilst the Amiga disk controller is much more flexible and choosing a low-level format which is incompatible but can fit more data onto a disk.
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