With correct precomping even low quality disks deliver decent results. We also found out that correct precompensation has a huge impact on readback. you do not try to write to the media with a drive that can not deliver the correct current (HD media in DD drive) you do not overformat (DD as HD) the media Mixing the drives and media is fine as long: But as long as you do not intend to to this, but are looking for a reliable backup media for your games - there it is. You get rock solid bit patterns that are so strong that the Amiga can not even reliably overwrite when trying to write a high score. We have done this with C20 and - only tested in DD Amigas so far - the results are amazing. You can even go further an have an HD drive write to an HD disk in terms of recording current and precompensation, but write only 880K contents. MFM) to the media by adjusting precompensation. Software can furthermore adopt the data / recording scheme (e.g. An HD drive can adjust its power to the media present. This will not work, as the recording current is too low. Whatever the reasons given, it is still inadviseable to mix DD and HD media and drives.Īs long as the recording current matches the specifications of the magnetic platter ("coercivity"), there is no problem. Because high-density, 1.44Mb floppies cost a few cents apiece, it's not worth risking data by trying to force low-density to high-density to save money. After a while, this "overdose" causes the individual magnetic fields to begin to interfere with one another. By formatting it as 1.44Mb, you subject it to a stronger magnetic field than you should. The reason for this is that the magnetic media for the lower-density 720Kb floppies is less sensitive. It is only later that you discover that the data is not written correctly. As a result, formatting appears to go well. The difference is that the 1.44Mb floppies are designed to handle 18 sectors per track instead of just nine. For both the 720Kb and 1.44Mb floppies, there are 80 tracks per side. However, with 3.5" floppies, the story is a little different. Formatting a 360K floppy as a 1.2Mb usually fails miserably because of the different number of tracks, so you usually cant get yourself into trouble.
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