Re: Hard drive reformatting and setup

From: Ray Arachelian <ray_at_email.domain.hidden>
Date: Tue, 21 Dec 2004 11:59:55 -0500 (est)

Yes. 1.44M "SuperDrives" can do this. I've created 400K Lisa disks on a Mac 7100 (Mac OS 7.5) using Apple Disk Copy 4.2 and DART, as well as on a 20th Anniversary Mac (Mac OS 9.1), and on a IIsi (Mac OS 7.5).

My Lisa was able to use them without any problems.

Note that you cannot use *NEW* versions of Apple Disk Copy as they will not write the tag data to the disk, so if you try, those floppies will not work on a Lisa. Nor can you use the new versions of Apple Disk Copy to convert from DART to Disk Copy 4.2 image formats - again, the tag information gets stripped off.

Normal PC floppy drives will never work as they only write MFM format, whereas the 400K format requires GCR. Apple 400K, 800k, and 1.44M Superdrive floppy drives are able to create proper 400K disks for use on a Lisa.

I vaguely recall there may have been some "strange" Mac's that had a 1.44M MFM only floppy, but not sure if they were clone PPC's or what - only that they had no soft eject - they used PC floppy drives with a push button for eject. These did not of course work, but I don't recall ever using any of those.

On Tue, 21 Dec 2004, Marcin Wichary wrote:

> > This can be done with Macs, with a build-in 800k Floppy-Drive or a so
> > called
> > 1,44 MB Super-Drive if you use DiskCopy and are able to run with OS 6
> > up to
> > OS 7.5.3
> Are you sure that SuperDrives can correctly write to 400K disks? I read
> reports to the contrary...

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Received on 2004-12-21 09:27:46

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