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All right, I now believe that this is a perfectly normal HFS 800kB disk with track 0 side 1 missing, rendering it unmountable. Therefore, not very interesting! But thanks for the help anyway. (Incidentally, if anyone knows of any MFS flux-level disk images they can point me at, I'd love to add...

I did try HFS and it didn't work; I'll have another look (it's possible there's something wrong with my HFS driver). It's there a 400kB HFS variant, or were those disks always MFS?

I've been given a disk image read with my FluxEngine floppy disk reader. The owner says it came from an Apple II of some description. The disk is in CLV Mac 800kB format (or possibly it's an 800kB disk reformatted as a 400kB disk; there are a lot of bad sectors on the back of the disk). This...

Wow. That's remarkably straightforward. Although, the FSM API looks remarkably complicated. I also found Retro68, which provides a modern development environment (with C++17!) far MacOS. I don't think the FSM bindings could be used as-is with Retro68 but adding them to the Multiversal dataset...

I wasn't being facetious! That's a great idea. Or at least a pixelated aeroplane, or snake, to avoid trademark issues... Where would I find information about developing extensions? Not that I don't have too many projects as is.

...and that's the hard bit, right? I've looked at the MFS file system definition; it's not actually very complicated. There's a single directory containing a flat list of files, a single FAT containing the allocation chains, and a boot block. Subdirectories are faked in the main directory ---...

That's useful, thanks. Looks like I'll be reinstalling, then. BTW, on a semi-related topic, I am now capable of reading and writing files directly from and to HFS-formatted Mac 800kB floppies on a normal PC drive (connected to a FluxEngine or GreaseWeazle controller). I'd like to add MFS...

I'll admit that even though I have exotic hardware for making Mac disks (wanting MFS support is actually in aid to supporting working with MFS filesystems), the idea of installing System 7 again from a zillion floppies fills me with dread.

I have a PowerBook 150 running 7.mumble. I want to be able to read/write/format 400kB MFS disks so that I can test MFS support on another platform. Does anyone know of any extensions that add full MFS support, including being able to format them? (Depending on the MacOS version I _may_ have...

So I've got this FluxEngine thing which lets you read and write exotic floppy disk formats on normal PC drives (with some extra hardware): http://cowlark.com/fluxengine/ It'll do Mac 400kB and 800kB disks. I'm currently adding support for direct filesystem access, so that you can read and write...

Is this something that could plausibly have happened during shipping?

Hello, I just bought this off a Swiss ebay-like, and it's arrived with this strange black line across the middle of the screen. It's one pixel high and appears to be always present. However, it occasionally shows oddly bright pixels (look at where the window borders cross it). This doesn't look...