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The 400k floppy is a single sided 3.5″ floppy was introduced with the Macintosh 128k systems, and also used with the Macintosh 512k system.
Unfortunately Windows PCs cannot create these disks, nor can any of the iMac Systems that use USB floppy drives. To create these disks you’ll need one of the systems listed on my compatibility table: https://www.savagetaylor.com/2015/11/22/setting-up-your-vintage-classic-68k-macintosh-selecting-your-system-software/
Or skip the whole thing and just use a floppy disk emulator.
Booting your classic 68k Macintosh from a 3.5 inch floppy disk was the most common and the easiest way to get most classic macs working when your starting with a more modern machine (most, but not all, more on that in a bit).
This post focuses on 3.5″ High Density (HD) disks that can be created using modern USB floppy drives.
Leave a CommentAs I mentioned in my Setting up your vintage (classic) 68k Macintosh not every Macintosh System can run every OS, for example System 7.5.5 was the last version to support the original Macintosh Systems with their Motorola 68000 (68k) processors, 7.6 required Systems with a 68030 and 32bit clean ROMs, with support for 68k processors ending with System 8.1. I also include some information about PPC systems, but my main focus for this page is 68k systems.
2 CommentsI’ve been playing around with old Macintosh systems since the late 90s when Mac Plus systems were plentiful and cheap. Over the years I’ve learned, forgotten, and relearned information about these systems, often going months at a time when I do not get to play with these old machines, so I decided to create this site to record the information I found useful, or interesting about my 68k Macintosh systems. Hopefully this information will also be useful to others who are new to setting up, configuring and using these old Macintosh Systems.
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